Time-resolved dosimetry with pencil-beam scanning for quality assurance/quality control in particle therapy.

ABSTRACT: This study aimed to measure dose in a scanning carbon beam-irradiation field with high sampling rate that is sufficient for identifying spots and verifying the characteristics of the scanning beam that cannot generally be derived from the dose. To identify the spot, which is the smallest control unit of beam information during irradiation, effecting measurements with a sampling time of 10 μs or shorter is necessary. The provided dose within a specific time is referred to as time-resolved dose (TRD). We designed a circuit for time-resolved dosimetry using a fast-data acquisition unit (SL1000, Yokogawa Electric Co.), which can measure 100 000 samples per second. Moreover, we used converters to enable a connection between an ionization chamber (IC) and the SL1000. TRD was measured successfull

SUBMITTER: Han S 

PROVIDER: S-EPMC8598136 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature