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Observation of ultrasonic emission from edges of therapeutic X-ray beams

T Bowen, C X Chen, S C Liew, W R Lutz and R L Nasoni

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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.


PACS

87.63.D- Ultrasonography

43.80.Vj Acoustical medical instrumentation and measurement techniques

43.80.Qf Medical diagnosis with acoustics (in PACS, see also 87.63.D−)

Subjects

Biological physics

Medical physics

Dates

Issue 4 (April 1991)



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