Ali Jomehzadeh
Department of Medical Physics, Kerman University of Medical Sciences, Kerman, Department of Medical Physics, Rafsanjan University of Medical Sciences, Rafsanjan, Iran.
[ 1 ] - Quality Control Assessment of Radiology Devices in Kerman Province, Iran
Introduction Application of quality control (QC) programs at diagnostic radiology departments is of great significance for optimization of image quality and reduction of patient dose. The main objective of this study was to perform QC tests on stationary radiographic X-ray machines, installed in 14 hospitals of Kerman province, Iran. Materials and Methods In this cross-sectional study, QC tests...
[ 2 ] - Dose-volume Analysis of Heart and Lung during 3D planning of Tangential Breast Cancer Irradiation
Background: Breast cancer is becoming more frequently diagnosed at early stages with improved long term outcomes. Radiation-related heart disease and lung cancer can occur following radiotherapy for breast cancer. The aim of this study was to evaluate some dosimetric parameters of heart and lung during whole breast radiotherapy. Methods:Twenty five consecutive...
[ 3 ] - Assessment of a 2D EPID-based Dosimetry Algorithm for Pre-treatment and In-vivo Midplane Dose Verification
Introduction: The use of electronic portal imaging devices (EPIDs) is a method for the dosimetric verification of radiotherapy plans both pretreatment and in-vivo. The aim of this study was to test a 2D EPID-based dosimetry algorithm for dose verification of some plans inside a homogenous and anthropomorphic phantom and in-vivo, as well. Materials and Methods: </strong...
[ 4 ] - Interpretation of In-air Output Ratio of Wedged Fields in Different Measurement Conditions
Introduction: The head scatter factor (Sc) is one of the important parameters for monitor unit (MU) calculation. There are multiple factors that impact the Sc values, such as, head structures, back scattering in to dose monitoring chambers, wedges and so on. This study aimed to investigate the variations of SC with different build-up cap materials, wall thickness, Source to ...
[ 5 ] - Dose-volume Analysis of Heart and Lung during 3D Planning of Tangential Breast Cancer Irradiation
Introduction: Breast cancer is becoming more frequently diagnosed at early stages with improved long-term outcomes. Radiation-related heart disease and lung cancer can occur following radiotherapy for breast cancer. The aim of this study was to evaluate some dosimetric parameters of heart and lung during whole breast radiotherapy. Materials and Methods: Twenty...
[ 6 ] - Effect of Material and Wall Thickness Buildup Caps on the Head ScatterFactor Measurements in Irregular Fields Shielded by Cerrobend
Introduction: The head scatter factor (Sc) is important to measurements radiation beam and beam modeling of treatment planning systems used for advanced radiation therapy techniques. This study aimed to investigate the design of a mini-phantom to measurement variations in collimator Sc in the presence of shielding blocks for shaping the beam using different field sizes. <str...
[ 7 ] - Rn- 222 Concentration and Gamma Dose Rate Measurements in the Vicinity of Hot Springs in Kerman Province, Southeastern, Iran.
Introduction: Radon-222 gas is a radioactive, colorless and odorless element that can cause lung cancer and stomach in humans with alpha-ray emissions. An important source of Radon-222 is the output water in springs, especially hot springs to emit ionision radiation. In this study, Rn-222 activity concentration and gamma dose rate levels in water sample of some selected hot spr...
نویسندگان همکار