Waveform simulation based on 3D dose distribution for acoustic wave generated by proton beam irradiation

A pulsed proton beam is capable of generating an acoustic wave when it is absorbed by a medium. This phenomenon suggests that the acoustic waveform produced may well include information on the three-dimensional (3D) dose distribution of the proton beam. We simulated acoustic waveforms by using a tra...

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Veröffentlicht in:	Medical physics (Lancaster) 2007-09, Vol.34 (9), p.3642-3648
Hauptverfasser:	Terunuma, Toshiyuki, Sakae, Takeji, Hayakawa, Yoshinori, Nohtomi, Akihiro, Takada, Yoshihisa, Yasuoka, Kiyoshi, Maruhashi, Akira
Format:	Artikel
Sprache:	eng
Schlagworte:	3D dose distribution ABSORPTION Acoustic modeling Acoustic sensing Acoustic signal processing acoustic wave absorption acoustic wave transmission acoustic waveform Acoustic waves Acoustical measurements Acoustics bioacoustics DOSIMETRY Dosimetry/exposure assessment Functional analysis GREEN FUNCTION Green's function methods imaging plate Mechanisms of action of acoustic energy on biological systems: physical processes, sites of action Microphones Models, Theoretical proton beam therapy PROTON BEAMS Protons RADIATION DOSE DISTRIBUTIONS radiation therapy RADIOLOGY AND NUCLEAR MEDICINE RADIOTHERAPY SIMULATION Sound pressure SOUND WAVES WAVE FORMS
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Zusammenfassung:	A pulsed proton beam is capable of generating an acoustic wave when it is absorbed by a medium. This phenomenon suggests that the acoustic waveform produced may well include information on the three-dimensional (3D) dose distribution of the proton beam. We simulated acoustic waveforms by using a transmission model based on the Green function and the 3D dose distribution. There was reasonable agreement between the calculated and measured results. The results obtained confirm that the acoustic waveform includes information on the dose distribution.
ISSN:	0094-2405 2473-4209
DOI:	10.1118/1.2767985