DEPARTMENT OF MEDICAL PHYSICS

UNIVERSITY OF WISCONSIN -School of Medicine & Public Health

 

QUICK LINKS: [Medical Physics Home Page]  [Medical Physics Faculty Profile]

DEPARTMENT OF MEDICAL PHYSICS 

 

Research Areas

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Ronald T. Wakai, Ph.D.

Professor, Medical Physics

Chair, Medical Physics Admissions Committee

 

1163 Wisconsin Institutes for Medical Research

UW-Medical Physics, Biomagnetism

Madison, WI 53705

 

Telephone: 608/265-4988 (office)

Fax: 608/262-2413

E-mail:  rtwakai@wisc.edu

 

  

PROFILE LINKS

  
 

OTHER DEPARTMENT AFFILIATIONS [back to top of page]
  • Medical Physics

  • Neurology

 

EDUCATION [back to top of page]

  
 

  • B.S., (Physics) Cornell University

  • M.S., (Physics) University of Illinois

  • Ph.D., (Physics) University of Illinois

  
  RESEARCH INTEREST [back to top of page]  
 
  • Fetal Biomagnetism and Adult MEG
  

POSITIONS [back to top of page]

  • 2002 - present, Associate Professor, Department of Medical Physics and Neurology

 

AWARDS AND HONORS [back to top of page]

  
 

  • B.A. with Honors in Physics, Cornell University

  • University Fellow, University of Illinois

 

MEMBERSHIPS [back to top of page]

  
 

  • American Association of Physicists in Medicine (AAPM)

  

 

PATENTS [back to top of page]

  

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PUBLICATIONS [back to top of page]

 
 

  1. R.T. Wakai, M. Wang, and C.B. Martin, "Spatiotemporal Properties of Fetal Magnetocardiogram," Am. J. Obstet, Gynecol, 70: 770-776 (1994).

  2. E.W. Howland, R.T. Wakai, B. Mjaanes, J. Balog, and C. Cleeland, “Whole-head Mapping of Magnetic Fields Following Painful Electric Finger Stimulation,” Cognitive Brain Res. 2: 162-172 (1995).

  3. R.T. Wakai, M. Wang, and C.B. Martin, “Fetal Magnetocardiogram Amplitude Modulation Associated with Respiratory Sinus Arrythmia and Fetal Rate Accelerations,” Physiol. Meas. 16: 49-54 (1995).

  4. R.T. Wakai, S. Swerdloff, M. Wang, M. Ruegsegger, F. Tipu, and O. Sloot, “Visualization of Dipole Solutions to the Neuromagnetic Inverse Problem,” Int. J. Biomed. Comp. 39: 257-262 (1995).

  5. O. Baffa, R.T. Wakai, P.L. Sousa, and R.M.M. Verzola, “Fetal Heart Rate Monitored by Magnetocardiogram,” Braz. J. Med. Bio. Res. 28: 1333-1337 (1995).

  6. R.T. Wakai, A.C. Leuthold, and C.B. Martin, “Fetal Auditory Evoked Response Detected by Magnetoencephalography,” Am J. Obstet. Gynecol 74: 1484-1486 (1996).

  7. R.T. Wakai, A.C. Leuthold, A.D. Wilson, and C.B. Martin, “Association of Fetal Junctional Rhythm and Respiratory Sinus Arrhythmia Magnetocardiography,” J. Ped. Cardiol. 18(3): 201-203 (1997).

  8. R.T. Wakai, A.C. Leuthold, and C.B. Martin, “Atrial and Ventricular Fetal Heart Rate Patterns in Congenital Complete Heart Block Detected Magnetocardiography,”  Am. J. Obstet. Gynecol. 179(1): 258-260 (1998).

  9. A.C. Leuthold, R.T. Wakai, and C.B. Martin, “Noninvasive in Utero Assessment of PR and QRS Interval from the Fetal Magnetocardiogram,” Early Human Dev. 54(3): 235-243 (1999).

  10. R.T. Wakai, A.C. Leuthold, S.M. Weber, and C.B. Martin, “MEG of the Neonate During Sleep, in Recent Advances in Biomagnetism, ed. T. Yoshimoto, M. Kotani, S. Kuriki, and H. Karibe (Tohoku University Press, Sendai, 1999).

  11. R.T. Wakai, M. Chen, A. Leuthold, J. Lengle, and C.B. Martin, Neuromagnetic detection of neonatal and intrauterine fetal brain activity, Frontiers in Fetal Health 1(5):13-15, 1999.

  12. R.T. Wakai, A.C. Leuthold, L. Cripe, and C.B. Martin, “Assessment of Fetal Rhythm in Congenital Complete Heart Block by Magnetocardiography, PACE  23, 1047-1050 (2000).

  13. R.T. Wakai, J.M. Lengle, and A.C. Leuthold, “Transmission of Electric and Magnetic Fetal Cardiac Signals in a Case of Ectopia Cordis:  the Dominant Role of the Vernex Caseosa,” Phys. Med. Biol. 45, 1989-1995 (2000).

  14. R. T. Wakai, M. Chen, H. Zhao, B. VanVeen, and J. Strasburger, Assessment of fetal rhythm at 20 weeks’ gestation by magnetocardiography, Biomedizinische Technik 46:188-190, 2001.

  15. M. Chen, R.T. Wakai, and B. VanVeen, Eigenvector-based spatial filtering of fetal biomagnetic signals, J. Perinat. Med. 29(6), 486-496, 2001.

  16. J.M. Lengle, M. Chen, M., and R.T. Wakai, Improved detection of fetal and neonatal auditory evoked responses, Clin. Neurophysiol. 112(5), 785-92, 2001.

  17. D. DeAraujo, O. Baffa, O., and R.T. Wakai, Theta oscillations and human navigation: a magnetoencephalography study, J. Cogn. Neurosci. 14: 70-78, 2002.

  18. H. Zhao and R.T. Wakai, Simultaneity of fetal heart rate acceleration and fetal trunk movement determined by fetal magnetocardiogram actocardiography, Phys. Med. Biol. 47:839-46, 2002.

  19. R.T. Wakai and W.J. Lutter, Matched filter template generation via spatial filtering: application to fetal biomagnetic recordings, IEEE Trans. Biomed. Eng. 49(10):1214-1217, 2002.

  20. R.T. Wakai, Biomagnetism of the adult and fetus: Recent basic and clinical applications, in Medical Physics: Sixth Mexican Symposium on Medical Physics, eds. L.M. Montaño Zetina and G. Herrera Corral, American Institute of Physics, Melville, New York, 2002.

  21. A. Rodriguez, B. VanVeen, and R.T. Wakai, Use of Signal Related Variance for MEG/EEG Source Localization and Detection, IEEE Trans. Biomed. Eng.50, 137-49, 2003.

  22. R.T. Wakai, J.F. Strasburger, Z. Li., B. Deal, and N. Gotteiner, Magnetocardiographic Rhythm Patterns at Initiation and Termination of Fetal Supraventricular Tachycardia, Circulation 107:307-12, 2003.

  23. Cuneo, B.F., Ovadia, M., Strasburger, J.F., Petropulos, T., Schneider, J., Zhao, H., Wakai, R.T., Prenatal Diagnosis and in utero Treatment of Torsades de pointes Associated with Congenital Long QT Syndrome, Am. J. Cardiol. 91:1395-8, 2003.

  24. Horigome, H. and Wakai, R.T., Basic and clinical applications of fetal magnetocardiography, Ped. Cardiol. Cardiac Surg. 19: 468-75, 2003.

  25. Wakai, R.T., Assessment of fetal neurodevelopment via fetal magnetocardiography, Experimental Neurology, Experimental Neurology 190, S65–S71, 2004.

  26. Lutter, W. J., Wakai, R. T., Maier, M. M., and Baryshnikov, B. V. MEG sleep pattern dependence of auditory evoked fields in young infants. Neurol Clin Neurophysiol 2004, 77, 2004.

  27. Baryshnikov, B., VanVeen, B.D., and Wakai, R.T., Maximum likelihood estimation of low rank signals for multiepoch MEG/EEG analysis, IEEE Trans. Biomed Eng. 51, 1981-93, 2004.

  28. Li, Z., Strasburger, J.F., and Wakai, R.T., Giant Fetal Magnetocardiogram P-waves in Congenital Heart Block: A Marker of Cardiovascular Compensation?, Circulation Wakai, R.T 110:2097-2101, 2004.

  29. de Araujo, D. B., Barros, A. K., Estombelo-Montesco, C., Zhao, H., da Silva Filho, A. C., Baffa, O., Wakai, R., and Ohnishi, N.  Fetal source extraction from magnetocardiographic recordings by dependent component analysis. Phys Med Biol 50, 4457-4464, 2005.

  30. Dubin, A.M., Cuneo, B.F., Strasburger, J.F., Wakai, R.T.,.Van Hare, G.F., Rosenthal, D.N., Congenital Junctional Ectopic Tachycardia and Congenital Complete Atrioventricular Block: A Shared Etiology?, Heart Rhythm 2(3):313-5, 2005.

  31. Rodriguez, A., Baryshnikov, B.V., Van Veen, B.D., Wakai, R.T., MEG and EEG Source Localization in Beamspace, IEEE Trans. Biomed. Eng., 53:430-441, 2005.

  32. W.J. Lutter, M. Maier, and R.T. Wakai, Development of MEG Sleep Patterns and Magnetic Auditory Evoked Responses During Early Infancy, Clin. Neurophysiol., 117, 522-30, 2006.

  33. Chen, M., Van Veen, B., and Wakai, R.T., Linear Minimum Mean Square Error Filtering for Evoked Responses: Application to Fetal MEG, IEEE Trans. Biomed. Eng. 53, 959-963, 2006.

  34. Zhao, H., Strasburger, J.F., Cuneo, B.F., and., Fetal Cardiac Repolarization Abnormalities, Am. J. Cardiol., accepted for publication.

  35. Limpiti, T., VanVeen, B., Wakai, R.T., Cortical Patch Basis Model for Spatially Extended Neural Activity, IEEE Trans. Biomed. Eng., in press.

Last Modified: 04/02/2008

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