Observation of Acoustic Signals from a Phantom in an 18 MeV Electron Beam for Cancer Therapy
At typical dosages with radiation therapy LINAC’s, a detectable acoustic signal from soft tissues is predicted1,2 if 103–104 successive signals arising from x-ray or electron beam pulses are signal averaged. A preliminary experiment is reported to confirm the existence of this acoustic signal which is expected because of the very small, but significant, thermal stresses due to pulsed heating by the LINAC beam.
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- 1.T. Bowen, Radiation-Induced Soft Tissue Imaging, Proceedings of 1981 IEEE Ultrasonic Symposium, p. 817.Google Scholar
- 2.T. Bowen, R. L. Nasoni, and A. E. Pifer, Thermoacoustic Imaging Induced by Deeply Penetrating Radiation, in: “Acoustical Imaging 83,” M. Kaveh, ed., Plenum Press, New York (preceding paper).Google Scholar
- 3.T. Bowen, R. L. Nasoni, A. E. Pifer, and G. H. Sembroski, Some Experimental Results on the Thermoacoustic Imaging of Tissue Equivalent Phantom Materials, Proceedings of 1981 IEEE Ultrasonics Symposium, p. 823.Google Scholar
- 4.L. Sulak, T. Armstrong, H. Baranger, M. Bregman, M. Levi, D. Mael, J. Strait, T. Bowen, A, E. Pifer, P. A. Polakos, H. Bradner, A. Parvulescu, W. V. Jones, and J. Learned, Experimental Studies of the Acoustic Signature of Proton Beams Traversing Fluid Media, Nucl. Instrum, and Methods161: 203 (1979).ADSCrossRefGoogle Scholar