Observation of ultrasonic emission from edges of therapeutic X-ray beams
T Bowen; C X Chen; S C Liew; W R Lutz; R L Nasoni; T Bowen; Dept. of Phys., Arizona Univ., Tucson, AZ, USA; C X Chen; Dept. of Phys., Arizona Univ., Tucson, AZ, USA; S C Liew; Dept. of Phys., Arizona Univ., Tucson, AZ, USA; W R Lutz; Dept. of Phys., Arizona Univ., Tucson, AZ, USA; R L Nasoni; Dept. of Phys., Arizona Univ., Tucson, AZ, USA
Журнал:
Physics in Medicine and Biology
Дата:
1991-04-01
Аннотация:
Describes the observation of acoustic pulses generated solely by the dose gradient at the edges of a therapeutic X-ray beam in a medium consisting only of water. This effect might find application when soft-tissue regions of patients receive therapeutic X-ray doses, either to verify precisely the position of the delivered X-ray dose relative to critical tissue which must be spared as much as possible during a course of treatments, or to measure a physical characteristic of the tissue.
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