A MOSFET-Based Method for Measuring Peak Kilovoltage (kVp) in Diagnostic X-Ray Beams
Peak kilovoltage (<italic>kVp</italic>) is an X-ray tube parameter that can influence the radiograph image quality and therefore, if the <italic>kVp</italic> is different from the nominal value, it can provide an unnecessary radiation dose to the patient if the examination ha...
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Open Journal of Instrumentation and Measurement |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9851457/ |
| _version_ | 1827276328190083072 |
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| author | Francisco A. Cavalcanti Luiz A. P. Santos |
| author_facet | Francisco A. Cavalcanti Luiz A. P. Santos |
| author_sort | Francisco A. Cavalcanti |
| collection | DOAJ |
| description | Peak kilovoltage (<italic>kVp</italic>) is an X-ray tube parameter that can influence the radiograph image quality and therefore, if the <italic>kVp</italic> is different from the nominal value, it can provide an unnecessary radiation dose to the patient if the examination has to be repeated. Therefore, some radiation protection institutions and health organizations (ICRP, IAEA) make recommendations to monitor <italic>kVp</italic> in medical diagnostic X-ray equipment in clinics and hospitals. There are some methods for measuring <italic>kVp</italic> in diagnostic X-ray beams, and the most common is the well-known two-sensor method, which uses two filters to attenuate the radiation beam, and it is based on the measurement of each identical sensor. The purpose of this article is to present a method for non-invasive measurement of <italic>kVp</italic> in medical diagnostic X-ray beams using the MOSFET device. Actually, MOSFET is well known as a detector for ionizing radiation dosimetry mainly in radiotherapy beams. Recently, MOSFET has also been used as dosimeter in diagnostic X-ray beams. In this work it will be shown a <italic>kVp</italic> measurement technique with MOSFET, which does not use the attenuation factor of the radiation filters, but instead takes advantage of the effect of the device package itself, known as the buildup cap effect. The results show that even with damage to the device exposed to radiation, MOSFET can be used as sensor for <italic>kVp</italic> measurement. |
| first_indexed | 2024-04-24T06:43:28Z |
| format | Article |
| id | doaj.art-958cbf44c93a4db888798def95b97185 |
| institution | Directory Open Access Journal |
| issn | 2768-7236 |
| language | English |
| last_indexed | 2024-04-24T06:43:28Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of Instrumentation and Measurement |
| spelling | doaj.art-958cbf44c93a4db888798def95b971852024-04-22T20:23:18ZengIEEEIEEE Open Journal of Instrumentation and Measurement2768-72362022-01-0111710.1109/OJIM.2022.31967259851457A MOSFET-Based Method for Measuring Peak Kilovoltage (kVp) in Diagnostic X-Ray BeamsFrancisco A. Cavalcanti0https://orcid.org/0000-0002-2530-6829Luiz A. P. Santos1https://orcid.org/0000-0002-0146-2149Departamento de Energia Nuclear, Universidade Federal de Pernambuco, Recife, BrazilNuclear Instrumentation Laboratory, CNEN/CRCN-NE, Recife, BrazilPeak kilovoltage (<italic>kVp</italic>) is an X-ray tube parameter that can influence the radiograph image quality and therefore, if the <italic>kVp</italic> is different from the nominal value, it can provide an unnecessary radiation dose to the patient if the examination has to be repeated. Therefore, some radiation protection institutions and health organizations (ICRP, IAEA) make recommendations to monitor <italic>kVp</italic> in medical diagnostic X-ray equipment in clinics and hospitals. There are some methods for measuring <italic>kVp</italic> in diagnostic X-ray beams, and the most common is the well-known two-sensor method, which uses two filters to attenuate the radiation beam, and it is based on the measurement of each identical sensor. The purpose of this article is to present a method for non-invasive measurement of <italic>kVp</italic> in medical diagnostic X-ray beams using the MOSFET device. Actually, MOSFET is well known as a detector for ionizing radiation dosimetry mainly in radiotherapy beams. Recently, MOSFET has also been used as dosimeter in diagnostic X-ray beams. In this work it will be shown a <italic>kVp</italic> measurement technique with MOSFET, which does not use the attenuation factor of the radiation filters, but instead takes advantage of the effect of the device package itself, known as the buildup cap effect. The results show that even with damage to the device exposed to radiation, MOSFET can be used as sensor for <italic>kVp</italic> measurement.https://ieeexplore.ieee.org/document/9851457/InstrumentationMOSFETpeak kilovoltageradiodiagnosticX-ray |
| spellingShingle | Francisco A. Cavalcanti Luiz A. P. Santos A MOSFET-Based Method for Measuring Peak Kilovoltage (kVp) in Diagnostic X-Ray Beams IEEE Open Journal of Instrumentation and Measurement Instrumentation MOSFET peak kilovoltage radiodiagnostic X-ray |
| title | A MOSFET-Based Method for Measuring Peak Kilovoltage (kVp) in Diagnostic X-Ray Beams |
| title_full | A MOSFET-Based Method for Measuring Peak Kilovoltage (kVp) in Diagnostic X-Ray Beams |
| title_fullStr | A MOSFET-Based Method for Measuring Peak Kilovoltage (kVp) in Diagnostic X-Ray Beams |
| title_full_unstemmed | A MOSFET-Based Method for Measuring Peak Kilovoltage (kVp) in Diagnostic X-Ray Beams |
| title_short | A MOSFET-Based Method for Measuring Peak Kilovoltage (kVp) in Diagnostic X-Ray Beams |
| title_sort | mosfet based method for measuring peak kilovoltage kvp in diagnostic x ray beams |
| topic | Instrumentation MOSFET peak kilovoltage radiodiagnostic X-ray |
| url | https://ieeexplore.ieee.org/document/9851457/ |
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