Dr. John G. Webster

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University of Wisconsin-Madison
College of Engineering
Biomedical Engineering
Professor EmeritusAppointed: 1967
Professional Headshot of John G. Webster

Mailing Address

1550 Engineering Drive
University of Wisconsin-Madison
Rm 2148
Madison, Wisconsin 53706-1609
United States

Contact Information

Phone: (608) 263-1574
Fax: (608) 265-9239
webster@engr.wisc.edu
http://www.engr.wisc.edu/bme/faculty/webster_john.html

Qualifications

Ph.D., University of Rochester, Electrical Engineering (Biomedical Engineering), 1967.
M.S., University of Rochester, Electrical Engineering, 1965.
B.S., Cornell University, Electrical Engineering, 1953.

Expertise and Research Interests

Medical instrumentation and devices.
Electrode design for RF, microwave and cryo hepatic ablation.
Electric safety of less lethal electromuscular devices.
Design of hot flash monitor.
Design of cardiac pacemakers and defibrillators.
Monitoring and stimulating electrodes.
Biopotential amplifiers and interference.
Design of pulse oximeters.
Monitoring ventilation.

Other Expertise

Business Experience:
Expert witness work by John G. Webster
Defamation
Served as expert witness for defendant in Taser International, Inc. vs. James A. Ruggieri, US District Court for the Eastern District of Virginia, Alexandria Division, Case No.: 1: 06 CV 593.
Wrote report, reviewed reports, was deposed on my research on Electrical safety of the Taser. Worked with Arthur T. K. Norris, Lee & McShane, 1211 Connecticut Avenue, N.W., Ste. 425, Washington, DC 20036, 202-530-8107, September 2006 to October 2006.

Patent infringement
Served as expert witness for defendant in Cardiac Science vs. Philips, US District Court for the District of Minnesota No. 03-CV-1064 DWF/RLE.
Reviewed files and depositions, tested electrodes, was deposed twice on Automatic external defibrillators. Traveled to New York City and Minneapolis to work with Gary Serbin, Eugene Chang, and Adam Steinert, Willkie, Farr & Gallagher, LLP, 787 7th Avenue, New York, NY 10019, 212-728-8568, Sept 2003 to April 2007.

Patent infringement
Served as expert witness for defendant in Advanced Neuromodulation Systems, Inc. vs. Advanced Bionics Corporation, US District Court for the Eastern District of Texas Sherman Division Civil Action No. 4:04CV131.
Reviewed files and depositions, was deposed on Implantable lead for spinal cord stimulation to relieve pain. Traveled to Los Angeles to work with Jennifer Sklenar, Howrey Simon Arnold White LLP, 550 S Hope St., Suite 1400, Los Angeles CA 90071, 213-892-1942, July 2005 to January 2006.

Patent infringement
Served as expert witness for plaintiff in Respironics, Inc. et al. v. Invacare Corp., United States District Court for the Western District of Pennsylvania, Civil Action No. 04-336.
Reviewed files and depositions, tested devices, was deposed on Continuous positive airway pressure (CPAP) devices. Traveled to Pittsburgh to work with Gene A. Tabachnick and Joshua Bish, Reed Smith LLP, 435 Sixth Avenue, Pittsburgh, PA 15219-1886, 412-288-3131, April to August 2005.

Patent infringement
Served as expert witness for plaintiff in Avid Identification Systems, Inc. vs. Allflex USA, Inc., and Pethealth Services (USA) Inc., United States District Court for the Western District of Wisconsin, Case No. 04-C-0067-S.
Reviewed files and depositions, tested devices, was deposed on Radiofrequency identification system (RFID) for animals. Traveled to Chicago to work with Christian Chadd Taylor, Shannon Hansen, Mary Zaug, and Christopher Liro, Kirkland & Ellis LLP, 200 East Randolph Drive, Chicago, IL 60601, 312-861-2000, June to October 2004.12-12-861-2000

Patent infringement
Served as expert witness for plaintiff in Johns Hopkins University v. Cardiac Pacemakers, Inc. and Guidant Corp., Civil Action JHY 96-1527, United States District Court for the District of Maryland Northern Division.
Reviewed files and depositions, was deposed on Implantable cardioverter-defibrillators. Traveled to Baltimore to work with David Heubeck, Venable, Baetjer and Howard, 1800 Mercantile Bank & Trust Building, Two Hopkins Plaza, Baltimore MD 21201-2978, 410-244-7731, January to September 1997.

Patent infringement
Served as expert witness for plaintiff in Thermoscan, Inc. v. Omron Healthcare, Inc., Safe Design, Ltd. and Harold Sandler, United States District Court Southern District of California Case No. 95-1651-B (CGA).
Reviewed files and depositions, was deposed on Infrared ear thermometer. Traveled to New York to work with James Bollinger and Alan Federbush of Hopgood, Calimafde, Kalil & Judlowe, 60 East 42nd Street, New York NY 10165, 212-986-2480, April 1996 to April 1998.

Defamation
Served as expert witness for plaintiff in Aequitron Medical, Inc. v. CBS, Inc. and CBS News, United States District Court, District of Minnesota.
Reviewed deposition and expert witness statement and was deposed regarding my tests of electrodes of Infant apnea monitor. Worked with Dave Morse of Best & Flanagan, 4000 First Bank Place, 601 Second Avenue South, Minneapolis MN 55402, 612-341-9729, September 1995.

Patent infringement
Served as expert witness for plaintiff in R2 Medical Systems, Inc. vs. Katecho, Inc., Cardiovascular Group of Oregon, Inc., and Padeco, Inc., Civil Action 94 C 3131, United States District Court for the Northern District of Illinois Eastern Division.
Reviewed files and depositions, tested electrodes, was deposed twice on Disposable defibrillator electrodes. Traveled to Chicago, New York, Carlsbad, CA to work with Gene W. Lee, Frances M. Lynch, Robert C. Morgan, and Thomas L. Secrest of Fish & Neave, 1251 Avenue of the Americas, 50 Fl, New York, NY 10020, 212-596-9000. Testifed at Markman hearing about 1 hour. Testified at trial about 1 hour. November 1994 to October 1997.

Patent infringement
Served as expert witness for defendant in Baxter vs. Spectramed, Civil Action CV-91 0288 WMB (GHKX), United States District Court for the Central District of California.
Reviewed files and depositions, was deposed and attended depositions on Disposable blood pressure transducer. Traveled to Chicago and Seattle to work with Keith Rockey, Tom Elliot, and Dennis Williamson of Rockey & Rifkin, 30 N. LaSalle, Chicago, IL 60602, 312-704-5600. Testified at trial about 6 hours, August 1991 to March 1994.

Patent infringement
Served as expert witness for defendant in Medtronic vs. Siemens-Pacesetter, et al., No. 88 C 121, United States District Court for the Northern District of Illinois Eastern Division.
Reviewed files and depositions, and was deposed on Adaptive cardiac pacemaker. Traveled to Chicago, Sylmar, CA, New York to work with Steven Noll of Hill, Van Santen, Steadman & Simpson, 70th Floor Sears Tower, Chicago, IL 60606, 312-876-0200, and William Gilbreth and Norman Beamer of Fish & Neave, 875 Third Avenue, New York, NY 10022, 212-715-0600. Testified at hearing about 3 hours, October to November 1991.

Judicial electrocution
Served as expert witness for plaintiff in Robert Wayne Sawyer versus John P. Whitley, Civil action No. 90-4035, Section "I", United States District Court for the Eastern District of Louisiana. Reviewed files on judicial electrocution. Tested electric chair at Louisiana State Penitentiary. Ran tests on model to demonstrate excessive burning caused by defective electrode. Traveled to New Orleans and Angola, LA to work with Neal Walker, Nicholas Trenticosta and Sarah Ottinger of Loyola Death Penalty Resource Center, 210 Baronne St., Suite 608, New Orleans, LA 70112, 504-522-0578. Testified at hearing about 3 hours, January 1991.

Patent infringement
Served as expert witness for plaintiff in IVAC Corp. vs. TERUMO Corp. United States District Court, Southern District of California Civil No. 870413 B (M).
Reviewed files and depositions, was deposed and attended depositions on Electronic medical thermometer. Tested electronic thermometer on 2 human subjects. Traveled to Minneapolis, Washington DC, New York, Los Angeles, and San Diego to work with Richard Bardin, Craig Bailey, and Gilbert Kovelman; of Fulwider, Patton, Lee & Utecht, 10877 Wilshire Blvd., Tenth Floor, Los Angeles, CA 90024, 213-824-5555. Testified at trial about 15 hours, Sept.-Nov. 1988.

Patent infringement
Served as expert witness for defendant in ZMI Corporation vs. Cardiac Resuscitator Corporation. United States District Court for the District of Oregon Civil No. 85-910-FR. (Fed. Cir., 1988), 844 F.2d 1576.
Reviewed files and depositions on Transcutaneous cardiac pacemakers. Tested 6 kinds of electrode on human subjects. Traveled 3 times to Portland OR to work with William A. Birdwell, of Spears, Lubersky et al., 520 SW Yamhill St., Suite 800, Portland OR 97204, 503-228-1841. Testified at trial about 4 hours. March-June 1986.

Product liability
Served as expert witness for plaintiff in William L. Tatman et ux. vs. Medtronic, Inc. Marathon (WI) County Case No. 83-CV-643.
Reviewed file and gave deposition at request of attorney Daniel F. Snyder, of DeBardeleben & Snyder, Box 280, Park Falls WI 54552, 715-762-3911 regarding defect in Implanted cardiac pacemaker. May 1986.

Product liability
Served as expert witness for plaintiff in Freeland v. the Board of Regents of the University of California et al.
Traveled to work with attorney Frank P. Barbaro, of Horton Barbaro & Reilly, 200 Main St., Santa Ana CA 92701, 714-835-2122 reviewing depositions, discovery file, and writing opinion letter regarding defendant's burn under electrosurgical dispersive electrode. Feb.-July 1985.

Trade secrets
Served as expert witness for defendant in Case No. 81-3459 CA (L) 01 C, in the Circuit Court of the 15th Judicial Circuit, in and for Palm Beach County, FL. Civil Action. Datamedix, Inc., Plaintiff, vs. Donald R. Sorchych, et al., defendants.
Traveled two times to work with attorneys Robert G. Haile, Jr. and James H. Schnare II, of Shulte Roth & Zabel, 249 Royal Palm Way, Palm Beach FL 33480, 305-659-9800 reviewing documents and developing affidavits to defend against alleged theft of trade secrets involving a portable cardiac monitor. Worked also with attorney Jerold A. Jacover, of Hume, Clements, Brinks, Willian & Olds, Ltd., One IBM Plaza, Suite 4100, Chicago IL 60611, 312-822-9800. Feb.-Dec. 1982.

Keywords

COS Keywords:

Biomedical Engineering, Cardiology, Electrical Engineering Or Electronics, Medical Device Engineering, Medical Instrumentation, Surgery.

Additional Terms:

Biopotential Amplifier, Cardiac Pacemaker, Cardiac RF Ablation, Electrocution, Electromuscular Incapacitating Device, Electrosurgical Unit, Hepatic RF Ablation, Hot Flash Monitor, Hot Flush Monitor, Interference, Medical Device, Medical Electrode, Medical Engineering, Medical Instrumentation, Pulse Oximeter, Sensor, Taser, Transducer.

Languages

(Reading, Writing, Speaking)

German: (Basic, Basic, Basic)

Memberships

IEEE - Engineering in Medicine and Biology Society
Institute of Electrical and Electronics Engineers
Instrument Society of America

Honors and Awards

2001, Career Achievement Award, IEEE-EMBS
2000, Benjamin Smith Reynolds Award for Excellence in Teaching Engineers, College of Engineering, University of Wisconsin-Madison, :
2000, Outstanding Instructor Award, College of Engineering, Polygon Engineering Council, University of Wisconsin-Madison
2000, Third Millenium Medal, IEEE
1999, Fellow, Institute of Physics
1999, Best Reference Work, Libraries Division, ASEE
1999, Holdridge Award for Excellence in Teaching, Department of Electrical and Computer Engineering, University of Wisconsin-Madison
1996, Laufman-Greatbatch Prize, AAMI Foundation, Association for the Advancement of Medical Instrumentation
1996, Excellence in teaching, Chancellor, University of Wisconsin-Madison
1994, Theo C. Pilkington Outstanding Educator Award, Biomedical Engineering Division, ASEE
1992, Fellow, American Institute for Medical and Biological Engineering
1986-1990, Surgery and Bioengineering Study Section, NIH
1986, Fellow, Institute of Electrical and Electronics Engineers
1979, Fellow, Instrument Society of America
1978, Western Electric Fund Award, ASEE
1974, Donald P. Eckman Education Award, ISA
1971-1976, Research Career Development Award, NIH

Previous Positions

1963-1967, Univ. of Rochester, NY, NIH Predoctoral Fellow
1962-1963, IBM Corp., Computer Display, Staff Engineer
1961-1962, Mitre Corp., Display Group, Staff Engineer
1959-1961, Radiation Inc., Telemetry System Test Group, Head
1955-1959, Boeing Airplane Co., Instrumentation Group, Head

Funding Received

  • US Dept. of Justice, National Institute of Justice: Modeling electric current flow through the human body, $500,000., 2004 to 2007.

Publications

  • Schutt, D. J., A. P. O'Rourke, J. A. Will, J. G. Webster, D. M. Mahvi, D. Haemmerich (2007) An electrode array that minimizes blood loss for radiofrequency-assisted hepatic resection, Med. Eng. Phys., In Press
  • O'Rourke, A. P., M. Lazebnik, J. M. Bertram, M. C. Converse, S. C. Hagness, J. G. Webster and D. M. Mahvi (2007) Dielectric properties of human normal, malignant, and cirrhotic liver tissue: in vivo and ex vivo measurements from 0.5 to 20 GHz using a precision open-ended coaxial probe, Phys. Med. Biol., 52, 4707-4719
  • O'Rourke, A. P., D. Haemmerich, P. Prakash, M. C. Converse, D. M. Mahvi, J. G. Webster, (2007) Current status of liver tumor ablation devices, Expert Rev. Med. Devices, 4, 523-537
  • Kim, C., A. P. O'Rourke, D. M. Mahvi, and J. G. Webster (2007) Finite element analysis of ex vivo and in vivo hepatic cryoablation, IEEE Trans. Biomed. Eng., 54, 1177-1185
  • Wu, J.-Y., H. Sun, A. O'Rourke, S. Huebner, P. S. Rahko, J. A. Will, and J. G. Webster (2007) Taser dart-to-heart distance that causes ventricular fibrillation in pigs, IEEE Trans. Biomed. Eng., 54, 503-508
  • Yang, D., M. C. Converse, D. M. Mahvi, and J. G. Webster (2007) Measurement and analysis of tissue temperature during microwave liver ablation, IEEE Trans. Biomed. Eng., 54, 150-155
  • Tangwongsan, C., L. Chachati, J. G. Webster, P. V. Farrell (2006) In vitro calibration of a system for measurement of in vivo convective heat transfer coefficient in animals, Biomed. Eng. Online, 26 (5(1)), 57
  • Bertram, J. M., D. Yang, M. C. Converse, J. G. Webster, D. M. Mahvi (2006) A review of coaxial-based interstitial antennas for hepatic microwave ablation, Crit. Rev. Biomed. Eng., 34, 187-213
  • Prakash, P., M. C. Converse, D. M. Mahvi, J. G Webster (2006) Measurement of specific heat capacity of liver phantom, Physiol. Meas., 27, N41-N46
  • Yang, D., J. M. Bertram, M. C. Converse, A. P. O'Rourke, J. G. Webster, S. C. Hagness, J. A. Will, and D. M. Mahvi (2006) A floating sleeve antenna yields localized hepatic microwave ablation, IEEE Trans. Biomed. Eng., 53, 533-537
  • Bertram, J. M., D. Yang, M. C. Converse, J. G. Webster, D. M. Mahvi (2006) Antenna design for microwave hepatic ablation using an axisymmetric electromagnetic model, Biomed. Eng. Online, 5, 15
  • Haemmerich, D., I. dos Santos, D. J. Schutt, J. G. Webster and D. M. Mahvi (2006) In vitro measurements of temperature-dependent specific heat of liver tissue, Med. Eng. Phys., 20, 194-197
  • Webster JG (ed.) (2006) Encyclopedia of medical devices and instrumentation, 2nd Edition, Hoboken NJ, Wiley
  • Wu, J.-Y., H. Sun, A. O'Rourke, S. Huebner, P. S. Rahko, J. A. Will, J. G. Webster (2006) Dart-to-heart distance when Taser causes ventricular fibrillation in pigs, , , IFMBE Proc., 15, 578-583 pages
  • Webster, J. G., D. E. Bahr, M. C. Shults, D. G. Grady, J. Macer (2006) A miniature skin-attached hot flash recorder, , , IFMBE Proc., 15, 1-4
  • Donatell GJ, Meister DW, O'Brien JR, Thurlow JS, Webster JG, Fellow L, Salvi FJ (Mar 2005) A simple device to monitor flexion and lateral bending of the lumbar spine., Ieee Transactions On Neural Systems and Rehabilitation Engineering : a Publication of the Ieee Engineering in Medicine and Biology Society., 13 (1), 18-23 Abstract
  • Haemmerich D, Lee FT Jr, Schutt DJ, Sampson LA, Webster JG, Fine JP, Mahvi DM (Feb 2005) Large-volume radiofrequency ablation of ex vivo bovine liver with multiple cooled cluster electrodes., Radiology, 234 (2), 563-8 Abstract
  • Haemmerich D, Schutt DJ, dos Santos I, Webster JG, Mahvi DM (Feb 2005) Measurement of temperature-dependent specific heat of biological tissues., Physiological Measurement, 26 (1), 59-67 Abstract
  • Haemmerich, D., J. G. Webster (2005) Automatic control of finite element models for temperature-controlled radiofrequency ablation,, Biomed. Eng. Online, 4 (1), 42
  • Wiese SR, Anheier P, Connemara RD, Mollner AT, Neils TF, Kahn JA, Webster JG (Jan 2005) Electrocardiographic motion artifact versus electrode impedance., Ieee Transactions On Bio-medical Engineering, 52 (1), 136-9 Abstract
  • Lai YC, Choy YB, Haemmerich D, Vorperian VR, Webster JG (Oct 2004) Lesion size estimator of cardiac radiofrequency ablation at different common locations with different tip temperatures., Ieee Transactions On Bio-medical Engineering, 51 (10), 1859-64 Abstract
  • Tangwongsan C, Will JA, Webster JG, Meredith KL Jr, Mahvi DM (Aug 2004) In vivo measurement of swine endocardial convective heat transfer coefficient., Ieee Transactions On Bio-medical Engineering, 51 (8), 1478-86 Abstract
  • Webster, J. G. (ed.), Electrical measurement, signal processing, and displays, CRC Press, Boca Raton, FL, 2004
  • Webster, J. G. (ed.), Bioinstrumentation, John Wiley & Sons, New York, 2004
  • Lee FT Jr, Haemmerich D, Wright AS, Mahvi DM, Sampson LA, Webster JG, Multiple probe radiofrequency ablation: pilot study in an animal model, Journal of Vascular and Interventional Radiology : Jvir, 14(11), 1437-42, November 2003 Abstract
  • dos Santos I, Will JA, da Rocha AF, Nascimento FA, Webster JG, Valvano JW, In vivo measurements of heat transfer on the endocardial surface, Physiological Measurement, 24(3), 793-804, August 2003 Abstract
  • Haemmerich D, Wright AW, Mahvi DM, Lee FT Jr, Webster JG, Hepatic bipolar radiofrequency ablation creates coagulation zones close to blood vessels: a finite element study, Medical and Biological Engineering and Computing, 41(3), 317-23, May 2003 Abstract
  • Laeseke PF, Winter TC 3rd, Davis CL, Stevens KR, Johnson CD, Fronczak FJ, Webster JG, Lee FT Jr, Postbiopsy bleeding in a porcine model: reduction with radio-frequency ablation--preliminary results, Radiology, 227(2), 493-9, May 2003 Abstract
  • dos Santos I, Shah J, Ferreira da Rocha A, Webster JG, Valvano JW, An instrument to measure the heat convection coefficient on the endocardial surface, Physiological Measurement, 24(2), 321-35, May 2003 Abstract
  • Haemmerich D, Staelin ST, Tsai JZ, Tungjitkusolmun S, Mahvi DM, Webster JG, In vivo electrical conductivity of hepatic tumours, Physiological Measurement, 24(2), 251-60, May 2003 Abstract
  • Tsai JZ, Will JA, Vorperian VR, Hubbard-van Stelle S, Cao H, Tungjitkusolmun S, Choy YB, Webster JG, In vitro measurement of myocardial impedivity anisotropy with a miniature rectangular tube, IEEE Transactions On Biomedical Engineering, 50(4), 528-32, April 2003 Abstract
  • Haemmerich D, Chachati L, Wright AS, Mahvi DM, Lee FT Jr, Webster JG, Hepatic radiofrequency ablation with internally cooled probes: effect of coolant temperature on lesion size, IEEE Transactions On Biomedical Engineering, 50(4), 493-500, April 2003 Abstract
  • Zhang J, Tsai JZ, Cao H, Chen Y, Will JA, Vorperian VR, Webster JG, Noncontact radio-frequency ablation for obtaining deeper lesions, IEEE Transactions On Biomedical Engineering, 50(2), 218-23, February 2003 Abstract
  • Bin Choy Y, Cao H, Tungjitkusolmun S, Tsai JZ, Haemmerich D, Vorperian VR, Webster JG, Mechanical compliance of the endocardium, Journal of Biomechanics, 35(12), 1671-6, December 2002 Abstract
  • Haemmerich D, Tungjitkusolmun S, Staelin ST, Lee FT Jr, Mahvi DM, Webster JG, Finite-element analysis of hepatic multiple probe radio-frequency ablation, IEEE Transactions On Biomedical Engineering, 49(8), 836-42, Aug 2002 Abstract
  • Cao H, Speidel MA, Tsai JZ, Van Lysel MS, Vorperian VR, Webster JG, FEM analysis of predicting electrode-myocardium contact from RF cardiac catheter ablation system impedance, IEEE Transactions On Biomedical Engineering, 49(6), 520-6, June 2002 Abstract
  • Tsai JZ, Will JA, Hubbard-Van Stelle S, Cao H, Tungjitkusolmun S, Choy YB, Haemmerich D, Vorperian VR, Webster JG, Error analysis of tissue resistivity measurement, IEEE Transactions On Biomedical Engineering, 49(5), 484-94, May 2002 Abstract
  • Tsai JZ, Will JA, Hubbard-Van Stelle S, Cao H, Tungjitkusolmun S, Choy YB, Haemmerich D, Vorperian VR, Webster JG, In-vivo measurement of swine myocardial resistivity, IEEE Transactions On Biomedical Engineering, 49(5), 472-83, May 2002 Abstract
  • Cao H, Tungjitkusolmun S, Choy YB, Tsai JZ, Vorperian VR, Webster JG, Using electrical impedance to predict catheter-endocardial contact during RF cardiac ablation, IEEE Transactions On Biomedical Engineering, 49(3), 247-53, March 2002 Abstract
  • Tungjitkusolmun S, Staelin ST, Haemmerich D, Tsai JZ, Webster JG, Lee FT Jr, Mahvi DM, Vorperian VR, Three-Dimensional finite-element analyses for radio-frequency hepatic tumor ablation, IEEE Transactions On Biomedical Engineering, 49(1), 3-9, January 2002 Abstract
  • Tungjitkusolmun S, Haemmerich D, Cao H, Tsai JZ, Choy YB, Vorperian VR, Webster JG, Modeling bipolar phase-shifted multielectrode catheter ablation, IEEE Transactions On Biomedical Engineering, 49(1), 10-7, January 2002 Abstract
  • Haemmerich D, Ozkan R, Tungjitkusolmun S, Tsai JZ, Mahvi DM, Staelin ST, Webster JG, Changes in electrical resistivity of swine liver after occlusion and postmortem, Medical and Biological Engineering and Computing, 40(1), 29-33, January 2002 Abstract
  • Haemmerich D, Staelin ST, Tungjitkusolmun S, Lee FT Jr, Mahvi DM, Webster JG, Hepatic bipolar radio-frequency ablation between separated multiprong electrodes, IEEE Transactions On Biomedical Engineering, 48(10), 1145-52, October 2001 Abstract
  • Cao H, Vorperian VR, Tungjitkusolmun S, Tsai JZ, Haemmerich D, Choy YB, Webster JG, Flow effect on lesion formation in RF cardiac catheter ablation, IEEE Transactions On Biomedical Engineering, 48(4), 425-33, April 2001 Abstract
  • Tungjitkusolmun S, Vorperian VR, Bhavaraju N, Cao H, Tsai JZ, Webster JG, Guidelines for predicting lesion size at common endocardial locations during radio-frequency ablation, IEEE Transactions On Biomedical Engineering, 48(2), 194-201, February 2001 Abstract
  • Bhavaraju NC, Cao H, Yuan DY, Valvano JW, Webster JG, Measurement of directional thermal properties of biomaterials, IEEE Transactions On Biomedical Engineering, 48(2), 261-7, February 2001 Abstract
  • Webster, J. G. (ed.), Minimally invasive medical technology, IOP Publishing, Bristol, UK, 2001
  • Pallás-Areny, R., and J. G. Webster, Sensors and signal conditioning, second edition, John Wiley & Sons, New York, 2001
  • Cao, H., V. R. Vorperian, J.-Z. Tsai, S. Tungjitkusolmun, E. J. Woo, and J. G. Webster, Temperature measurement within myocardium during in vitro RF catheter ablation, IEEE Transactions on Biomedical Engineering, 47(11), 1518-1524, November 2000
  • Tungjitkusolmun S, Woo EJ, Cao H, Tsai JZ, Vorperian VR, Webster JG, Finite element analyses of uniform current density electrodes for radio-frequency cardiac ablation, Ieee Transactions On Biomedical Engineering, 47(1), 32-40, Jan 2000 Abstract
  • Tsai JZ, Cao H, Tungjitkusolmun S, Woo EJ, Vorperian VR, Webster JG, Dependence of apparent resistance of four-electrode probes on insertion depth, Ieee Transactions On Biomedical Engineering, 47(1), 41-8, Jan 2000 Abstract
  • Woo EJ, Tungjitkusolmun S, Cao H, Tsai JZ, Webster JG, Vorperian VR, Will JA, A new catheter design using needle electrode for subendocardial RF ablation of ventricular muscles: finite element analysis and in vitro experiments, Ieee Transactions On Biomedical Engineering, 47(1), 23-31, Jan 2000 Abstract
  • Webster, J. G. (Ed.), Mechanical variables measurement, Boca Raton FL: CRC Press, 2000
  • Webster J. G., (Ed.), Encyclopedia of electrical and electronics engineering, New York: John Wiley & Sons, Inc., 1999
  • Beams DM, Sasse FJ, Webster JG, Radwin RG, Model for the administration of low-flow anaesthesia, British Journal of Anaesthesia, 81(2), 161-70, August 1998 Abstract
  • Weinberg GM, Webster JG, Measuring human ventilation for apnoea detection using an optical encoder, Physiological Measurement, 19(3), 441-6, August 1998 Abstract
  • Galuschky C W, Webster J G, Dual-chamber cardiac pacemaker tester., Medical and Biological Engineering and Computing, 36(2), 233-7, March 1998 Abstract
  • Laudon M K, Webster J G, Frayne R, Grist T M, Minimizing interference from magnetic resonance imagers during electrocardiography., Ieee Transactions On Biomedical Engineering, 45(2), 160-4, February 1998 Abstract
  • Beebe D J, Denton D D, Radwin R G, Webster J G, A silicon-based tactile sensor for finger-mounted applications., Ieee Transactions On Biomedical Engineering, 45(2), 151-9, February 1998 Abstract
  • Cohen K P, Ladd W M, Beams D M, Sheers W S, Radwin R G, Tompkins W J, Webster J G, Comparison of impedance and inductance ventilation sensors on adults during breathing, motion, and simulated airway obstruction., Ieee Transactions On Biomedical Engineering, 44(7), 555-66, July 1997 Abstract
  • Cohen Kevin P, Ladd William M, Beams David M, Sheers William S, Radwin Robert G, Tompkins Willis J, Webster John G, Comparison of impedance and inductance ventilation sensors on adults during breathing, motion, and simulated airway obstruction, IEEE Transactions on Biomedical Engineering, 44(7), 555-566, 1997
  • de Talhouet H, Webster J G, The origin of skin-stretch-caused motion artifacts under electrodes., Physiological Measurement, 17(2), 81-93, May 1996 Abstract
  • Beebe David J, Denton Denice D, Radwin Robert G, Webster John G, Finger-mounted silicon sensor for providing force feedback information, Proceedings of SPIE - The International Society for Optical Engineering, 2718, 502-512, 26 Feb 1996
  • Mayotte M J, Webster J G, Tompkins W J, Reduction of motion artefacts during paediatric/infant apnoea monitoring, Medical and Biological Engineering and Computing, 34(1), 93-96, 1996
  • Mayotte M J, Webster J G, Tompkins W J, Reduction of motion artefacts during paediatric/infant apnoea monitoring., Medical and Biological Engineering and Computing, 34(1), 93-6, January 1996 Abstract
  • Chong-pong Au T, Webster J G, Tan B T, A system for non-invasively measuring blood pressure on a treadmill., Physiological Measurement, 16(4), 273-85, November 1995 Abstract
  • Berners A C, Webster J G, Worringham C J, Stelmach G E, An ultrasonic time-of-flight system for hand movement measurement., Physiological Measurement, 16(4), 203-11, November 1995 Abstract
  • Panescu D, Webster J G, Tompkins W J, Stratbucker R A, Optimisation of transcutaneous cardiac pacing by three-dimensional finite element modelling of the human thorax., Medical and Biological Engineering and Computing, 33(6), 769-75, November 1995 Abstract
  • Rosell J, Cohen K P, Webster J G, Reduction of motion artifacts using a two-frequency impedance plethysmograph and adaptive filtering., Ieee Transactions On Biomedical Engineering, 42(10), 1044-8, October 1995 Abstract
  • Cohen Kevin P, Tompkins Willis J, Djohan Adrianus, Webster John G, Hu Yu H, QRS detection using a fuzzy neural network, Biology - Proceedings, 17(1), 189-190, 20 Sep 1995
  • Cohen K P, Hu Y H, Tompkins W J, Webster J G, Breath detection using a fuzzy neural network and sensor fusion, Signal Processing, 5, 3491-3494, 9 May 1995
  • Cohen K P, Hu Y H, Tompkins W J, Webster J G, Breath detection using a fuzzy neural network and sensor fusion, Processing - Proceedings, 5, 3491-3494, 9 May 1995
  • Panescu D, Webster J G, Tompkins W J, Stratbucker R A, Optimization of cardiac defibrillation by three-dimensional finite element modeling of the human thorax., Ieee Transactions On Biomedical Engineering, 42(2), 185-92, February 1995 Abstract
  • Panescu D, Webster J G, Tompkins W J, Stratbucker R A, Optimization of cardiac defibrillation by three-dimensional finite element modeling of the human thorax, IEEE Transactions on Biomedical Engineering, 42(2), 185-192, 1995
  • Panescu D, Webster J G, Tompkins W J, Stratbucker R A, Optimization of transcutaneous cardiac pacing by three-dimensional finite element modelling of the human thorax, Medical and Biological Engineering and Computing, 33(6), 769-775, 1995
  • Rosell Javier, Cohen Kevin P, Webster John G, Reduction of motion artifacts using a two-frequency impedance plethysmograph and adaptive filtering, IEEE Transactions on Biomedical Engineering, 42(10), 1044-1048, 1995
  • Panescu D, Webster J G, Tompkins W J, Staley R L, Johnson J, Schlageter D, Stratbucker R A, A database of cardiac arrhythmias., Academic Emergency Medicine, 2(1), 46-9, January 1995 Abstract
  • Luo Shen, Tompkins Willis J, Webster John G, Air flow estimation in the presence of motion artifacts, Biology Society - Proceedings, 16(pt 2), 966-967, 3 Nov 1994
  • Luo Shen, Tompkins Willis J, Webster John G, Cardiogenic artifact cancellation in apnea monitoring, Biology Society - Proceedings, 16(pt 2), 968-969, 3 Nov 1994
  • Afonso Valtino X, Tompkins Willis J, Webster John G, Quantitative measures of respiratory sinus arrhythmia for apnea detection, Biology Society - Proceedings, 16(pt 1), 129-130, 3 Nov 1994
  • Panescu Dorin, Fleishman Sidney D, Whayne James G, Swanson David K, Webster John G, Influence of different electrode geometries on the current density distribution during radio-frequency ablation. A three-dimensional finite element study, Biology Society - Proceedings, 16(pt 2), 788-789, 3 Nov 1994
  • Cohen Kevin P, Webster John G, Northern James, Hu Yu H, Tompkins Willis J, Breath detection using fuzzy sets and sensor fusion, Biology Society - Proceedings, 16(pt 2), 1067-1068, 3 Nov 1994
  • Mayotte M J, Webster J G, Tompkins W J, A comparison of electrodes for potential use in paediatric/infant apnoea monitoring., Physiological Measurement, 15(4), 459-67, November 1994 Abstract
  • Woo E J, Hua P, Webster J G, Tompkins W J, Finite-element method in electrical impedance tomography., Medical and Biological Engineering and Computing, 32(5), 530-6, September 1994 Abstract
  • Panescu D, Webster J G, Stratbucker R A, A nonlinear finite element model of the electrode-electrolyte-skin system., Ieee Transactions On Biomedical Engineering, 41(7), 681-7, July 1994 Abstract
  • Panescu D, Webster J G, Stratbucker R A, A nonlinear electrical-thermal model of the skin., Ieee Transactions On Biomedical Engineering, 41(7), 672-80, July 1994 Abstract
  • Panescu D, Webster J G, Stratbucker R A, Modeling current density distributions during transcutaneous cardiac pacing., Ieee Transactions On Biomedical Engineering, 41(6), 549-55, June 1994 Abstract
  • Cohen K P, Panescu D, Booske J H, Webster J G, Tompkins W J, Design of an inductive plethysmograph for ventilation measurement., Physiological Measurement, 15(2), 217-29, May 1994 Abstract
  • Panescu D, Webster J G, Stratbucker R A, Measurement of ventricular volume from blood conductance using two-dimensional finite element analysis., Physiological Measurement, 15(1), 49-56, February 1994 Abstract
  • Panescu D, Webster J G, Stratbucker R A, Nonlinear electrical-thermal model of the skin, IEEE Transactions on Biomedical Engineering, 41(7), 672-680, 1994
  • Webster John G, Design of cardiac pacemakers, Biomedical Engineering Applications Basis Communications, 6(6), 859-864, 1994
  • Webster John G, Instructional objectives and bench examinations in circuits laboratories, IEEE Transactions on Education, 37(1), 111-113, 1994
  • Panescu D, Webster J G, Stratbucker R A, Nonlinear finite element model of the electrode-electrolyte-skin system, IEEE Transactions on Biomedical Engineering, 41(7), 681-687, 1994
  • Cohen Kevin P, Webster John G, Panescu Dorin, Booske John H, Tompkins Willis J, Oscillator frequency separation in a two-channel inductive plethysmograph, Proceedings of the Annual Conference on Engineering in Medicine and Biology, 15(pt 2), 1018-1019, 28 Oct 1993
  • Pallas-Areny R, Webster J G, AC instrumentation amplifier for bioimpedance measurements., Ieee Transactions On Biomedical Engineering, 40(8), 830-3, August 1993 Abstract
  • Pallas-Areny R, Webster J G, Bioelectric impedance measurements using synchronous sampling., Ieee Transactions On Biomedical Engineering, 40(8), 824-9, August 1993 Abstract
  • Panescu D, Cohen K P, Webster J G, Stratbucker R A, The mosaic electrical characteristics of the skin., Ieee Transactions On Biomedical Engineering, 40(5), 434-9, May 1993 Abstract
  • Hua P, Woo E J, Webster J G, Tompkins W J, Finite element modeling of electrode-skin contact impedance in electrical impedance tomography., Ieee Transactions On Biomedical Engineering, 40(4), 335-43, April 1993 Abstract
  • Hua Ping, Woo Eung Je, Webster John G, Tompkins Willis J, Finite element modeling of electrode-skin contact impedance in electrical impedance tomography, IEEE Transactions on Biomedical Engineering, 40(4), 335-343, 1993
  • Panescu D, Cohen K P, Webster J G, Stratbucker R A, Mosaic electrical characteristics of the skin, IEEE Transactions on Biomedical Engineering, 40(5), 434-439, 1993
  • Woo Eung Je, Hua Ping, Webster John G, Tompkins Willis J, Robust image reconstruction algorithm and its parallel implementation in electrical impedance tomography, IEEE Transactions on Medical Imaging, 12(2), 137-146, 1993
  • Hua P, Woo E J, Webster J G, Tompkins W J, Using compound electrodes in electrical impedance tomography., Ieee Transactions On Biomedical Engineering, 40(1), 29-34, January 1993 Abstract
  • Luo S, Afonso V X, Webster J G, Tompkins W J, The electrode system in impedance-based ventilation measurement., Ieee Transactions On Biomedical Engineering, 39(11), 1130-41, November 1992 Abstract
  • Kaczmarek K A, Webster J G, Radwin R G, Maximal dynamic range electrotactile stimulation waveforms., Ieee Transactions On Biomedical Engineering, 39(7), 701-15, July 1992 Abstract
  • Woo E J, Hua P, Webster J G, Tompkins W J, Measuring lung resistivity using electrical impedance tomography., Ieee Transactions On Biomedical Engineering, 39(7), 756-60, July 1992 Abstract
  • Radwin R G, Oh S, Jensen T R, Webster J G, External finger forces in submaximal five-finger static pinch prehension., Ergonomics, 35(3), 275-88, March 1992 Abstract
  • Luo Shen, Afonso Valtino X, Webster John G, Tompkins Willis J, The electrode system in impedance-based ventilation measurement, IEEE Transactions on Biomedical Engineering, 39(11), 1130-1141, 1992
  • Woo Eung Je, Hua Ping, Webster John G, Tompkins Willis J, Measuring lung resistivity using electrical impedance tomography, IEEE Transactions on Biomedical Engineering, 39(7), 756-760, 1992
  • Wertsch Jacqueline J, Webster John G, Tompkins Willis J, Portable insole plantar pressure measurement system, Journal of Rehabilitation Research and Development, 29(1), 13-18, 1992
  • Radwin Robert G, Oh Seoungyeon, Jensen Todd R, Webster John G, External finger forces in submaximal five-finger static pinch prehension, Ergonomics, 35(3), 275-288, 1992
  • Kaczmarek Kurt A, Webster John G, Radwin Robert G, Maximal dynamic range electrotactile stimulation waveforms, IEEE Transactions on Biomedical Engineering, 39(7), 701-715, 1992
  • Wertsch J J, Webster J G, Tompkins W J, A portable insole plantar pressure measurement system., Journal of Rehabilitation Research and Development, 29(1), 13-8, 1 Jan 1992 Abstract
  • Woo E J, Hua P, Webster J G, Tompkins W J, Pallas-Areny R, Skin impedance measurements using simple and compound electrodes., Medical and Biological Engineering and Computing, 30(1), 97-102, January 1992 Abstract
  • Kaczmarek K A, Kramer K M, Webster J G, Radwin R G, A 16-channel 8-parameter waveform electrotactile stimulation system., Ieee Transactions On Biomedical Engineering, 38(10), 933-43, October 1991 Abstract
  • Zhu H S, Harris G F, Wertsch J J, Tompkins W J, Webster J G, A microprocessor-based data-acquisition system for measuring plantar pressures from ambulatory subjects., Ieee Transactions On Biomedical Engineering, 38(7), 710-4, July 1991 Abstract
  • Zhu Hongsheng, Harris Gerald F, Wertsch Jacqueline J, Tompkins Willis J, Webster John G, A microprocessor-based data-acquisition system for measuring plantar pressures from ambulatory subjects, IEEE Transactions on Biomedical Engineering, 38(7), 710-714, 1991
  • Hua Ping, Woo Eung Je, Webster John G, Tompkins Willis J, Iterative reconstruction methods using regularization and optimal current patterns in electrical impedance tomography, IEEE Transactions on Medical Imaging, 10(4), 621-628, 1991
  • Jensen Todd R, Radwin Robert G, Webster John G, Conductive polymer sensor for measuring external finger forces, Journal of Biomechanics, 24(9), 851-858, 1991
  • Kaczmarek Kurt A, Kramer Kevin M, Webster John G, Radwin Robert G, A 16-channel 8-parameter waveform electrotactile stimulation system, IEEE Transactions on Biomedical Engineering, 38(10), 933-943, 1991
  • Kaczmarek K A, Webster J G, Bach-y-Rita P, Tompkins W J, Electrotactile and vibrotactile displays for sensory substitution systems., Ieee Transactions On Biomedical Engineering, 38(1), 1-16, January 1991 Abstract
  • Jensen T R, Radwin R G, Webster J G, A conductive polymer sensor for measuring external finger forces., Journal of Biomechanics, 24(9), 851-8, 1991 Abstract
  • Woo Eung Je, Webster John G, Tompkins Willis J, The improved Newton-Raphson method and its parallel implementation for static impedance imaging, Proceedings of the Annual Conference on Engineering in Medicine and Biology, 102-103, 1 Nov 1990
  • Akbarzadeh Mohammad R, Tompkins Willis J, Webster John G, Multichannel impedance pneumography for apnea monitoring, Proceedings of the Annual Conference on Engineering in Medicine and Biology, 1048-1049, 1 Nov 1990
  • Woo Eung Je, Pallas-Areny Ramon, Webster John G, Tompkins Willis J, Using Walsh functions in electrical impedance tomography, Proceedings of the Annual Conference on Engineering in Medicine and Biology, 124-125, 1 Nov 1990
  • Beebe David J, Denton Denice D, Webster John G, Radwin Robert G, A polyimide packaging process for a semiconductor diaphragm tactile sensor, Proceedings of the Annual Conference on Engineering in Medicine and Biology, 1058-1059, 1 Nov 1990
  • Kaczmarek Kurt A, Webster John G, Radwin Robert G, Periodic variations in the electrotactile sensation threshold, Proceedings of the Annual Conference on Engineering in Medicine and Biology, 1060-1061, 1 Nov 1990
  • Zhu H S, Maalej N, Webster J G, Tompkins W J, Bach-y-Rita P, Wertsch J J, An umbilical data-acquisition system for measuring pressures between the foot and shoe., Ieee Transactions On Biomedical Engineering, 37(9), 908-11, September 1990 Abstract
  • Zhu Hongsheng, Maalej Nabil, Webster John G, Tompkins Willis J, Bach-Y-Rita Paul, Wertsch Jacqueline J, An umbilical data-acquisition system for measuring pressures between the foot and shoe, IEEE Transactions on Biomedical Engineering, 37(9), 908-911, 1990
  • Pallas-Areny R, Webster J G, Composite instrumentation amplifier for biopotentials., Annals of Biomedical Engineering, 18(3), 251-62, 1990 Abstract
  • Hua Ping, Woo Eung Je, Webster John G, Tompkins Willis J, Electrical impedance tomograph using compound electrodes, Proceedings of the Annual Conference on Engineering in Medicine and Biology, 11 pt 2, 472-473, 9 Nov 1989
  • Maalej N, Webster J G, Tompkins W J, Wertsch J J, Conductive polymer pressure sensor array, Proceedings of the Annual Conference on Engineering in Medicine and Biology, 11 pt 4, 1116-1117, 9 Nov 1989
  • Woo Eung Je, Hua Ping, Tompkins Willis J, Webster John G, 32-electrode electrical impedance tomograph - Software design and static images, Proceedings of the Annual Conference on Engineering in Medicine and Biology, 11 pt 2, 455-456, 9 Nov 1989
  • Nowicki D J, Webster J G, One op-amp current source for electrical impedance tomography, Proceedings of the Annual Conference on Engineering in Medicine and Biology, 11 pt 2, 457-458, 9 Nov 1989
  • Pax Ralph A, Webster John G, Radwin Robert G, Conductive polymer sensor for the measurement of palmar pressures, Proceedings of the Annual Conference on Engineering in Medicine and Biology, 11 pt 5, 1483-1484, 9 Nov 1989
  • Webster John G, Pressure mat for preventing pressure sores, Proceedings of the Annual Conference on Engineering in Medicine and Biology, 11 pt 5, 1485-1486, 9 Nov 1989
  • Ghahary Ali, Webster John G, Electrical safety for an electrical impedance tomograph, Proceedings of the Annual Conference on Engineering in Medicine and Biology, 11 pt 2, 461-462, 9 Nov 1989
  • Mehta Dharmesh, Tompkins Willis J, Webster John G, Wertsch Jacqueline J, Analysis of foot pressure waveforms, Proceedings of the Annual Conference on Engineering in Medicine and Biology, 11 pt 5, 1487-1488, 9 Nov 1989
  • Webster John G, Publishing books in biomedical engineering, Proceedings of the Annual Conference on Engineering in Medicine and Biology, 11 pt 5, 1559-1560, 9 Nov 1989
  • Bhat Sudhakar, Webster John G, Tompkins Willis J, Wertsch Jacqueline J, Piezoelectric sensor for foot pressure measurement, Proceedings of the Annual Conference on Engineering in Medicine and Biology, 11 pt 5, 1435-1436, 9 Nov 1989
  • Patel A, Webster J G, Tompkins W J, Wertsch J J, Electronic circuits for capacitive pressure sensors, Proceedings of the Annual Conference on Engineering in Medicine and Biology, 11 pt 5, 1437-1438, 9 Nov 1989
  • Onesti R J, Tompkins W J, Webster J G, Wertsch J J, Design of a portable electrotactile stimulator for sensory substitution applications, Proceedings of the Annual Conference on Engineering in Medicine and Biology, 11 pt 5, 1439-1440, 9 Nov 1989
  • Hunter G R, Montoye H J, Webster J G, Demment R, Ji L L, Ng A, The validity of a portable accelerometer for estimating energy expenditure in bicycle riding., Journal of Sports Medicine and Physical Fitness, 29(3), 218-22, September 1989 Abstract
  • Pallas-Areny, R., and J.G. Webster, Analog signal processing, John Wiley & Sons, New York, 1999
  • Webster, J.G. (ed.), Medical instrumentation: application and design, third edition, John Wiley & Sons, New York, 1998
  • Webster, J.G. (ed.), Design of cardiac pacemakers, IEEE Press, Piscataway, NJ, 1995
  • Webster, J.G. (ed.), Prevention of pressure sores, Adam Hilger, Bristol UK, 1991
  • Webster, J.G. (ed.), Electrical impedance tomography, Adam Hilger, Bristol UK, 1990
  • Tompkins, W. J., and J. G. Webster (eds.), Interfacing sensors to the IBM PC, Prentice Hall, Englewood Cliffs, NJ, 1988.
  • Webster, J.G. (ed.), Tactile sensors for robotics and medicine, John Wiley & Sons, New York, 1988
  • Webster, J. G., A. M. Cook, W. J. Tompkins, and G. C. Vanderheiden (eds.), Electronic devices for rehabilitation, Wiley, New York, 1985
  • Cook, A.M. and J.G. Webster (eds.), Therapeutic medical devices: application and design, Prentice-Hall, Englewood Cliffs, NJ, 1982
  • Tompkins, W. J., and J. G. Webster (eds.), Design of microcomputer-based medical instrumentation, Prentice-Hall, Englewood Cliffs, NJ, 1981
  • Webster, J. G. and A. M. Cook (eds.), Clinical engineering: principles and practices, Prentice-Hall, Englewood Cliffs, NJ, 1979
  • Jacobson, B., and J. G. Webster, Medicine and clinical engineering, Prentice-Hall, Englewood Cliffs, NJ, 1977
  • Webster, J.G. (ed.), Design of pulse oximeters, IOP Publishing, Bristol UK, 1997
  • Webster, J.G.(ed.), The measurement, instrumentation, and sensors handbook, CRC Press, Boca Raton FL, 1999
  • Pallás-Areny, R., and J. G. Webster, Sensors and signal conditioning, second edition, John Wiley & Sons, New York, 2001

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