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Mateos, H., J. Lipovetzky, F. Alcalde Bessia, M. Perez, P. Cappagli, and M. Gomez Berisso. "Characterization of sensors and design of an embedded photodetectors array for beam profile measurements in radiotherapy." In 2017 Eight Argentine Symposium and Conference on Embedded Systems (CASE), 1–6. 2017 Eight Argentine Symposium and Conference on Embedded Systems (CASE)., 2017.
Abstract: In this work, the dosimetric performance of several Commercial Of The Shelf photodiodes was studied. They were tested against gamma rays from a teletherapy source and were characterized with the aim of building a one-dimensional array of dosimeters able to measure the the spatial distribution of dose in a radiotherapy irradiation field. An embedded system comprising an array of 40 photodiodes and its acquisition electronics was built and tested. The dose resolution of each detector was 0.06 cGy and the spatial resolution of the system 0.5 cm.
Keywords: biomedical measurement; dosimeters; dosimetry; photodetectors; photodiodes; radiation therapy; photodetectors array; sensor characterization; Commercial Of The Shelf photodiodes; 1D dosimeter array; dose spatial distribution; radiotherapy irradiation field; teletherapy source; gamma rays; beam profile measurements; dose resolution; acquisition electronics; radiation absorbed dose 0.06 cGy; Photodiodes; Sensitivity; Current measurement; Detectors; Radiation effects; Voltage measurement; Multiplexing; Radiotherapy; Ionizing Radiation; Photodiodes; Quality Assurance.