D. R. Daum, M. T. Buchanan, T. Fjield, and K. Hynynen, "Design and evaluation of a feedback based phased array system for ultrasound surgery," IEEE Ultrason Ferroelectr Freq Contr 45, pp. 431-8, 1998.

D. R. Daum and K. Hynynen, "Thermal dose optimization via temporal switching in ultrasound surgery," IEEE
 Ultrason Ferroelectr Freq Contr 45, pp. 208-15, 1998.

T. Fjield, V. Sorrentino, H. Cline, and K. Hynynen, "Design and experimental verification of thin acoustic lenses
for the coagulation of large tissue volumes," Phys Med Biol 42, pp. 2341-2354, 1997.

T. Fjield, X. Fan, and K. Hynynen, "A parametric study of the concentric-ring transducer design for MRI
guided ultrasound surgery," J Acoust Soc Am 100, pp. 1220-30, 1996.

T. Fjield and K. Hynynen, "Experimental verification of the sectored annular phased array for MRI guided
ultrasound surgery," IEEE Ultrason Symp Proc, pp. 1273-1276, 1996.

T. Fjield and K. Hynynen, "The combined concentric-ring and sector-vortex phased array for MRI guided
ultrasound surgery," IEEE Trans Ultrason Ferroelectr Freq Contr 44, pp.1157-1167, 1996.

D. R. Daum and K. Hynynen, "Optimization of thermal dose using switching mode patterns of a spherically shaped square element phased array," IEEE Ultrason Symp Proc, 1996.

K. Hynynen, A. Chung, T. Fjield, M.T. Buchanan, D.R. Daum, V. Colucci, P. Lopath, and F. Jolesz, "Feasibility
of using ultrasound phased arrays for MRI monitored noninvasive surgery," IEEE Trans Ultrason
Ferroelectr Freq Contr 43, pp. 1043-53, 1996.

K. Hynynen, W. R. Freund, H. E. Cline, A. Chung, R. D. Watkins, J. P. Vetro, and F. A. Jolesz, "A clinical,
noninvasive, MR imaging-monitored ultrasound surgery method," RadioGraphics 16, pp. 185-195, 1996.

M. T. Buchanan and K. Hynynen, "Design and experimental evaluation of an intracavitary ultrasound phased
array system for hyperthermia," IEEE Trans Biomed Eng 41, pp. 1178-1187, 1994.