Evaluation of the Dosimetric Parameters of the Interstitial HDR Liver Brachytherapy at USM

There are numerous treatment options available to treat hepatocellular carcinoma (HCC). Up now, stereotactic body radiotherapy (SBRT) has been considered the best option cure HCC, however SBRT does not adequately spare nearby organ at risk (OAR) [1]. A high dose rate interstitial brachytherapy (HDR IBT) technique for HCC is as an alternative due accurate and precise delivery target well spared adjacent OAR [2]. The main objective of this retrospective study was evaluate dosimetry tolerance tumour HDRIBT using iridium-192 (Ir-192) source.
 computed tomography (CT) image-guided 41 patients with 71 cases in USM were used analyse distribution (HCC) (diaphragm). data from Oncentra planning system (v.4.3) relationship between dosimetric variables, prescribed (15 Gy – 25 Gy) fractionation by statistical analysis.
 In study, 95% gross volume (GTV) achieved both single multiple fractionations. GTV decreased increased all doses. Apart that, doses, 20 Gy, exhibited a higher diaphragm compared 15 dose. Meanwhile, fractionations also remarkably treatment.
 minimum recommended based on comparison RTOG 0438, liver protocol. These values applicable addition, it 15y Gy. short, doses V99% 90% dose, V95% V90% 100% respectively. 0438 protocol ribs within 54 Therefore, 0.2cm3, 0.5cm3 2.0cm3 dose) < 10 (20 (25 respectively whereas regardless volume. conclusion, most promising maximizing reducing