Proton and Carbon Ion Beam Spot Size Measurement Using 5 Different Detector Types
Purpose
The spot size of scanned particle beams is of crucial importance for the correct dose delivery and, therefore, plays a significant role in the quality assurance (QA) of pencil beam scanning ion beam therapy.
Materials and Methods
This study compares 5 detector types—radiochromic film, ionization chamber (IC) array, flat panel detector, multiwire chamber, and IC—for measuring the spot size...