Small photon beams used in radiotherapy techniques have inherent characteristics of charge particle disequilibrium and high-dose gradient making accurate dosimetry for such fields very challenging. By means of a 3D manufacturing technique, it is possible to create arrays of pixels with a very small sensitive volume for radiotherapy dosimetry. We investigate the impact of 3D pixels size on absorbed dose sensitivity, linearity of response with dose rate, reproducibility and beam profile measurements.
Performance of 3D diamond detectors in small field dosimetry: The impact of pixel size / Kanxheri, Keida; Talamonti, Cinzia; Sciortino, Silvio; Lagomarsino, Stefano; Ionica, Maria; Caprai, Mirco; Moscatelli, Francesco; Servoli, Leonello. - In: PHYSICA MEDICA. - ISSN 1120-1797. - STAMPA. - 102:(2022), pp. 73-78. [10.1016/j.ejmp.2022.09.006]
Performance of 3D diamond detectors in small field dosimetry: The impact of pixel size
Talamonti, Cinzia;Sciortino, Silvio;Lagomarsino, Stefano;
2022
Abstract
Small photon beams used in radiotherapy techniques have inherent characteristics of charge particle disequilibrium and high-dose gradient making accurate dosimetry for such fields very challenging. By means of a 3D manufacturing technique, it is possible to create arrays of pixels with a very small sensitive volume for radiotherapy dosimetry. We investigate the impact of 3D pixels size on absorbed dose sensitivity, linearity of response with dose rate, reproducibility and beam profile measurements.
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