Performance Assessment of Semiconductor Detector Used in Diagnostics and Interventional Radiology at the Nigerian Secondary Standard Dosimetry Laboratory
- 1 National Institute of Radiation Protection and Research, University of Ibadan, Ibadan, Oyo State, Nigeria
- 2 National Institute of Radiation Protection and Research, University of Ibadan, Ibadan, Oyo State, Nigeria
- 3 National Institute of Radiation Protection and Research, University of Ibadan, Ibadan, Oyo State, Nigeria
- 4 National Institute of Radiation Protection and Research, University of Ibadan, Ibadan, Oyo State, Nigeria
- 5 National Institute of Radiation Protection and Research, University of Ibadan, Ibadan, Oyo State, Nigeria
- 6 National Institute of Radiation Protection and Research, University of Ibadan, Ibadan, Oyo State, Nigeria
- 7 National Institute of Radiation Protection and Research, University of Ibadan, Ibadan, Oyo State, Nigeria
- 8 National Institute of Radiation Protection and Research, University of Ibadan, Ibadan, Oyo State, Nigeria
- 9 National Institute of Radiation Protection and Research, University of Ibadan, Ibadan, Oyo State, Nigeria
Abstract
Radiation doses to patients in diagnostics and interventional radiology need to be optimized to comply with the principles of radiation protection in medical practice. This involves using specific detectors with respective diagnostic beams to carry out quality control/quality assurance tests needed to optimize patient doses in the hospital. Semiconductor detectors are used in dosimetry to verify the equipment performance and dose to patients. This work aims to assess the performance, energy dependence, and response of five commercially available semiconductor detectors in RQR, RQR-M, RQA, and RQT at Secondary Standard Dosimetry for clinical applications. The diagnostic beams were generated using Exradin A4 reference ion chamber and PTW electrometer. The ambient temperature and pressure were noted for KTP correction. The detectors designed for RQR showed good performance in RQT beams and vice versa. The detectors designed for RQR-M displayed high energy dependency in other diagnostic beams. The type of diagnostic beam quality determines the response of semiconductor detectors. Therefore, a detector should be calibrated according to the beam qualities to be measured.
- Kržanović, N., Blideanu, V., Ciraj-Bjelac, O., Plagnard, J., Schoonjans, W., Živanović, M., et al . (2021) Performance Testing of Dosimeters Used in Interventional Radiology: Results from the VERIDIC Project. Radiation Measurements , 141, Article ID: 106515. https://doi.org/10.1016/j.radmeas.2021.106515
- IAEA (2007) Dosimetry in Diagnostic Radiology: An International Code of Practice, Technical Reports Series No. 457.
- Rivera-Montalvo, T. (2016) Diagnostic Radiology Dosimetry: Status and Trends. Applied Radiation and Isotopes , 117, 74-81. https://doi.org/10.1016/j.apradiso.2016.03.008
- Salomon, E., Homolka, P., Csete, I. and Toroi, P. (2020) Performance of Semiconductor Dosimeters with a Range of Radiation Qualities Used for Mammography: A Calibration Laboratory Study. Medical Physics , 47, 1372-1378. https://doi.org/10.1002/mp.14005
- Martin, C.J. (2007) An Evaluation of Semiconductor and Ionization Chamber Detectors for Diagnostic X-Ray Dosimetry Measurements. Physics in Medicine and Biology , 52, 4465-4480. https://doi.org/10.1088/0031-9155/52/15/007
- Petri, A.R., Terini, R.A. and Pereira, M.A.G. (2009) Calibration of Semiconductor Detectors for Dosimetry in Diagnostic Radiology. In: Dössel, O. and Schlegel, W.C., Eds., World Congress on Medical Physics and Biomedical Engineering , Springer, 201-204. https://doi.org/10.1007/978-3-642-03902-7_57
- Liebmann, M., Poppe, B. and von Boetticher, H. (2015) Computed Tomography Dosimetry with High-Resolution Detectors Commonly Used in Radiotherapy—An Energy Dependence Study. Journal of Applied Clinical Medical Physics , 16, 396-407. https://doi.org/10.1120/jacmp.v16i5.5302
- Egarievwe, S.U., Israel, M.B., Banks, A.D., Drabo, M.L., Dunning, K.L., Cook, V.J., et al . (2019) Design and Fabrication of a CdMnTe Nuclear Radiation Detection System. 2019 SoutheastCon , Huntsville, 11-14 April 2019, 1-4. https://doi.org/10.1109/southeastcon42311.2019.9020612
- International Atomic Energy Agency (2008) Measurement Uncertainty: A Practical Guide for Secondary Standards Dosimetry Laboratories.
- IEC (2012) Medical Electrical Equipment: Dosimeters with Ionization Chambers and/or Semi-Conductor Detectors as Used in X-Ray Diagnostic Imaging, Rep. IEC-61674.