Validation of the implementation of phased-array heating systems in Plan2Heat.
Strahlenther Onkol
; 2024 Aug 14.
Article
en En
| MEDLINE
| ID: mdl-39143400
ABSTRACT
BACKGROUND:
Hyperthermia treatment planning can be supportive to ensure treatment quality, provided reliable prediction of the heating characteristics (i.e., focus size and effects of phase-amplitude and frequency steering) of the device concerned is possible. This study validates the predictions made by the treatment planning system Plan2Heat for various clinically used phased-array systems.METHODS:
The evaluated heating systems were AMC-2, AMC-4/ALBA-4D (Med-Logix srl, Rome, Italy), BSD Sigma-30, and Sigma-60 (Pyrexar Medical, Salt Lake City, UT, USA). Plan2Heat was used for specific absorption rate (SAR) simulations in phantoms representing measurement set-ups reported in the literature. SAR profiles from published measurement data based on Efield or temperature rise were used to compare the device-specific heating characteristics predicted by Plan2Heat.RESULTS:
Plan2Heat is able to predict the correct location and size of the SAR focus, as determined by phase-amplitude settings and operating frequency. Measured effects of phase-amplitude steering on focus shifts (i.e., local SAR minima or maxima) were also correctly reflected in treatment planning predictions. Deviations between measurements and simulations were typically <â¯10-20%, which is within the range of experimental uncertainty for such phased-array measurements.CONCLUSION:
Plan2Heat is capable of adequately predicting the heating characteristics of the AMC2, AMC-4/ALBA-4D, BSD Sigma-30, and Sigma-60 phased-array systems routinely used in clinical hyperthermia.
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Bases de datos:
MEDLINE
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En
Revista:
Strahlenther Onkol
Asunto de la revista:
NEOPLASIAS
/
RADIOTERAPIA
Año:
2024
Tipo del documento:
Article
País de afiliación:
Países Bajos