TY - JOUR ID - 15650 TI - Suitability of Chambers in Relative Dose Measurement of Small Fields for Accelerated Photon Delivered by a Medical Linear Accelerator JO - Iranian Journal of Medical Physics JA - IJMP LA - en SN - AU - Purohit, Santunu AU - Meaze, AKM Moinul Haque AU - Enamul Kabir, SM AU - Rahman, Md. Shakilur AU - Patwary, Md. Kawchar Ahmed AD - Department of Physics, University of Chittagong, Bangladesh AD - Department of Radiology, North East Cancer Hospital, Sylhet., Bangladesh AD - SSDL, Bangladesh Atomic Energy Commission, Savar, Bangladesh AD - Department of Physics, Comilla University, Cumilla Y1 - 2021 PY - 2021 VL - 18 IS - 4 SP - 293 EP - 299 KW - Clinical Protocols KW - Scattering Factors KW - Radiation Dosimetry KW - Linac DO - 10.22038/ijmp.2020.46202.1721 N2 - Introduction: Using the small field in modern radiotherapy, the present study aimed at measuring the relative dosimetry (scattering factor, percentage depth dose (PDD), and profile of penumbra) with ionization (FC65-G, CC13, CC01) and diode (razor) chambers.  Material and Methods: Applying TRS-398 in Varian Clinac™ IX-5982 for 6 MV photon beams, the conditions (pressure, temperature, direction, polarity) were kept the same for a set of field sizes (1 × 1, 2 × 2, 3 × 3, 4 × 4, 5 × 5, 7 × 7, and 10 × 10 cm2), and relative dosimetry was performed at the North-East Cancer Hospital, Sylhet, Bangladesh. Results: During the output factor measurement in small fields, the razor showed better results than CC13. Taking CC01 as a standard in small fields, the data obtained from the study showed a good agreement with those of the previously published works. Conclusion: Razor, with extremely small active volume, was very much suited for small field dosimetry, except for PDDs. UR - https://ijmp.mums.ac.ir/article_15650.html L1 - https://ijmp.mums.ac.ir/article_15650_0e1afdd9cf38ed949bba1da65abb6829.pdf ER -