BACKGROUND Dosimetric comparison of two dimensional (2D) radiography and three-dimensional computed tomography (3D-CT) based dose distributions with high-dose-rate (HDR) intracavitry radiotherapy (ICRT) for carcinoma cervix, in terms of target coverage and doses to bladder and rectum. MATERIALS AND METHODS Sixty four sessions of HDR ICRT were performed in 22 patients. External beam radiothera...

Telah dilakukan perencanaan radioterapi pada pasien kanker nasofaring (KNF) stadium III menggunakan teknik Intensity Modulated Radiotherapy (IMRT). Penelitian ini bertujuan untuk menganalisis nilai Conformity Index (CI), Homogeneity (HI), dan dosis radiasi Organ at Risk (OAR). Perencanaan IMRT Software Treatment Planning System (TPS) Eclipse 5 laki-laki KNF yang berusia 8-65 tahun dengan 2 Gy, ...

PURPOSE The aim of this work was to evaluate the variation of dose in organs at risk (OARs) in fractionated high dose rate intracavitary brachytherapy (HDR-BT) for cervical cancer. MATERIAL AND METHODS A prospective study was carried out on 20 cervical cancer patients treated with fractionated (HDR-BT). International Commission on Radiation Units and Measurement (ICRU) bladder (bICRU) and rec...

The objective of calibrating TLD badges and radiation survey meters demand that accurate dose gets to the TLDs and radiation survey meters. A lead block mould and an ICRU slab phantom had been designed and constructed to collimate the panoramic Cs-137 source at the secondary standards dosimetry laboratory (SSDL) by experts at the National Nuclear Research Institute (NNRI) workshop of the Ghana ...

BACKGROUND AND PURPOSE Most of the studies in which medium dose rate (MDR) or high dose rate (HDR) brachytherapy have been used for the treatment of cervical carcinoma were prescribed according to the Manchester system. This study aims to present early results of exclusive radiotherapy, which includes MDR brachytherapy, performed using ICRU 38 recommendations to their full extent. MATERIALS A...

In intracavitary radiotherapy (ICRT) for cancer cervix, applicator geometry has the potential to impact the doses to organs at risk (OARs) and the coverage of the target volume. At our centre two Varian made Fletcher-style applicator sets, namely defined (fixed) geometry and flexible geometry, are used for ICRT. In the present work, the two types of applicators were compared dosimetrically as p...

Dose distributions in different models of inhomogeneous phantoms irradiated with 3 19 MeV electron beams have been calculated using DOSXYZnrc/EGSnrc Monte Carlo code. The rectilinear 3D voxel phantoms, relevant for radiotherapy and clinical dosimetry, were built from ICRU soft tissue equivalent material in which was inserted a single layer of bone, lung, air or Titanium. Significant interface e...

Background: Purpose of the study is to evaluate field-in-field (FIF) and sliding-window intensity modulated radiation therapy (SW-IMRT) treatment plans in terms of homogeneity index (HI), conformity index (CI) and normal tissue doses for organs at risk (OAR) in patients with endometrial carcinoma along with deriving a new expression for CI. Materials and Methods: Four different FIF plans with d...