Characterization of a Commercial PIN Diode for Stereotactic Radiosurgery Dosimetry
DOI:
https://doi.org/10.15392/bjrs.v10i2A.1827Keywords:
diode, small fields, dosimetry, circular cones. radiosurgeryAbstract
The stereotactic radiosurgery (SRS) is a technique that uses multiple beams extremely collimated of ionizing
radiation to treat intracranial lesions and functional abnormalities, with high geometric precision and dosimetric
accuracy. The use of small fields is already a reality in modern radiotherapy techniques. However, the accuracy
in small-field dosimetry is challenging because of several process physics and aspects related to the detector. The
aim of this paper is to evaluate the response of a dosimetric system developed by Nuclear Energy Department of
Federal University of Pernambuco (DEN/UFPE) for small field dosimetry. Measurements of, output factor (OF),
off-axis ratio (OAR) and percentage depth dose (PDP) were performed with this dosimetric system and
compared with the results obtained with a commercial diode and treatment planning system data. The results
showed that the Diode-DEN presents a reliable and economical alternative for small fields dosimetry used in
treatments of SRS. This detector can be used for validation of dates obtained in commissioning of linear
accelerator and inserted in Treatment Planning Systems (TPS).
Downloads
References
PARK S. Y.; CHOI B. G.; LEE D. M.; JANG N. Y. Analysis of small-field dosimetry with
various detectors. Korean Society of Medical Physics, Progress in Medical Physics, v. 29,
SCHMELING T.F. Validation of the frameless functional radiosurgery technique using cone for
trigeminal neuralgia cases (Dissertation) 2021.
IAEA – International Atomic Energy Agency. Technical Reports Series n° 483- Dosimetry of
small static fields used in external beam radiotherapy. An international code of practice for
reference and relative dose determination. IAEA, Viena, 2017.
KUMAR et al. Dosimetric Characteristics of a PIN Diode for Radiotherapy Application.
Technology in Cancer Research and Treatment. v.13 n. 4, 2014.
GALVAN J. Comissioning of integrated system of radiosurgery Varian ICVI. (Dissertation)
CHENG J. Y. Output factor comparison of Monte Carlo and measurement for Varian TrueBeam
MV and 10 MV flattening filter-free stereotactic radiosurgery system. Journal of Applied
Clinical Medical Physics, v. 17,n.3, p.100-110, 2018.
VENSELAAR J., WELLEWEERD H. ; MIJNHEER B. Tolerances for accuracy of photon
beam dose calculation of treatment planning systems. Radiotherapy and Oncology. V. 60, p.
-201, 2001.
Published
Issue
Section
Categories
License
Copyright (c) 2022 Brazilian Journal of Radiation Sciences
This work is licensed under a Creative Commons Attribution 4.0 International License.
Licensing: The BJRS articles are licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
How to Cite
