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.
KeywordsAcoustical Image Electron Beam Pulse Acrylic Plate Acoustic Transducer Noise Bandwidth
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