Determination of the dose calculations accuracy of 3D-CRT treatment planning

Riadul Islam Chowdhury 1, * and M Jahangir Alam 2

1 Department of CSE, Pundra University of Science & Technology, Bogura, Bangladesh.
2 Department of Radiotherapy, Ahsania Mission Cancer and General Hospital, Dhaka, Bangladesh.
 
Research Article
International Journal of Science and Research Archive, 2024, 12(02), 2726–2736.
Article DOI: 10.30574/ijsra.2024.12.2.1543 
Publication history: 
Received on 10 July 2024; revised on 17 August 2024; accepted on 20 August 2024
 
Abstract: 
One of the important treatment modality for preventing cancer is radiotherapy. The objectives of radiotherapy are to deliver the recommended dosage to the tumor while preserving as much of the surrounding healthy tissues and the organs at risk (OARs). The aim of this study was to calculate the exact dose to the tumor and less dose to the OARs by modern LINAC based 3D-CRT techniques. In order to ascertain such delivery, computerised treatment planning systems (TPS) were used for calculating the necessary dose distribution based on anatomical arrangements of organs in the body, which in turn are depended on CT simulation of individual patient and the basic dosage parameters of the LINAC. The quality assurance (QA) tests had to be conducted for determining whether the intended radiation dosage would provide the patient with the appropriate dose distribution. In this present work, elaborate dose calculations of 20 different cancer patients with 6 MV and 15 MV photon beams and 6 MeV electron beam were performed. The laboratory assesments were carried out at Ahsania Mission Cancer and General Hospital, Uttara, Dhaka.
 
Keywords: 
3D-CRT; OAR; QA; LINAC; TPS; CT simulation
 
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