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Different Dosimeters/Detectors Used in Small-Field Dosimetry: Pros and Cons Publisher



Parwaie W1 ; Refahi S2 ; Ardekani MA3 ; Farhood B4
Authors

Source: Journal of Medical Signals and Sensors Published:2018


Abstract

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. © 2018 Journal of Medical Signals & Sensors | Published by Wolters Kluwer - Medknow
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