Different dosimeters/detectors used in small-field dosimetry: Pros and cons

Journal of Medical Signals and Sensors

关键词: Detector;    dosimeter;    radiotherapy;    small field dosimetry;   

DOI  :  10.4103/jmss.JMSS_3_18

来源: DOAJ

【 摘 要 】

With the advent of complex and precise radiation therapy techniques, the use of relatively small fields is needed. Using such field sizes can cause uncertainty in dosimetry; therefore, special attention is required both in dose calculations and measurements. There are several challenges in small-field dosimetry such as the steep gradient of the radiation field, volume averaging effect, lack of charged particle equilibrium, partial occlusion of radiation source, beam alignment, and unable to use a reference dosimeter. Due to these challenges, special dosimeters are needed for small-field dosimetry, and this review article discusses this topic.

【 授权许可】

Unknown