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Feasibility study of shielded diode detector for small field dosimetry

MetadataDetails
Publication Date2024-02-19
JournalRadiation Protection Dosimetry
AuthorsResmi K Bharathan, Irfana Thasni, Musthafa Musthafa, Suja Cheruliyil Ayyappan, Silpa Ajaykumar
InstitutionsMalabar Cancer Centre, University of Calicut

Abstract Improved imaging techniques and modern radiotherapy treatment delivery in the treatment field are reduced to the precise size of the tumor, which necessitates the need for small-field dosimetry. Dosimetry in small-field dosimetry is challenging because most of the available code of practice for dosimetry is based on the cavity theory concept. Some small-sized detectors show good spatial resolution and sensitivity. Of the available small detectors, the diamond detector’s performance is remarkably good. Most of the centers for radiotherapy lack diamond detectors. In this situation, if a diode detector is available, we can use it for small-field dosimetry by applying the Daisy Chaining method correction methods. In this study, the diode detector’s response is not over-responding because of the defective diode. So this diode cannot be used for further measurements, and we have to regularly check the performance of the diode before using it for measurements.

  1. 2018 - The physics of small megavoltage photon beam dosimetry [Crossref]
  2. 2020 - Reference dosimetry of static, nonstandard radiation therapy fields: application to biology-guided radiotherapy and cranial radiosurgery generators
  3. 2000 - Absorbed Dose Determination in External Beam Radiotherapy: An International Code of Practice for Dosimetry Based on Standards of Absorbed Dose to Water
  4. 2008 - A new formalism for reference dosimetry of small and nonstandard fields [Crossref]
  5. 2015 - Evaluation of a synthetic single-crystal diamond detector for relative dosimetry on the Leksell gamma knife Perfexion radiosurgery system [Crossref]
  6. 1986 - Introduction to Radiological Physics and Radiation Dosimetry [Crossref]
  7. 2005 - Dosimetric characteristics of a new unshielded silicon diode and its application in clinical photon and electron beams [Crossref]
  8. 1983 - Effects of radiation damage on p-type silicon detectors [Crossref]
  9. 2016 - On the detector response and the reconstruction of the source intensity distribution in small photon fields