International commission of radiation units and measurement point doses to the bladder rectum in carcinoma cervix patients treated with intracavitary brachytherapy department radiotherapy. The aim: evaluate two-dimensional point-based dose planning three-dimensional computed tomography-based dose-volume parameters for high-dose-rate cervical cancer. Materials methods: prospective study done bet...

Introduction: Radiotherapy is an effective modality to treat esophageal carcinoma. Due to various inhomogenous tissues with a variety of physical and radiological properties which can cause uncertainty in accurate dose calculations in radiation therapy, accuracy of TPS is very important. The aim of this study was to quantify dose calculation accuracy of CoreplanTM TPS in an inh...

In recent years in vivo XRF has been found to be an effective aid to occupational health in the monitoring of concentrations of Pb in bone. One popular technique is to site an appropriate source-detector arrangement proximal to the tibial bone. Particularly popular has been use of a relatively high activity point or annular source of Cd mounted on the front of a thin-window HPGe detector. XRF e...

background: different kinds and models of personal dosimeters are used in individual monitoring by workers.  performance testing as part of approval procedures is carried out to demonstrate that the essential performance specifications are routinely maintained. there are four service providers in iran which use different luminescence techniques (i. e. tld and rpl) with various kinds of dosimete...

AIMS AND BACKGROUND The aim of surveys on clinical practice is to stimulate discussion and optimize practice. In this paper the current Italian radiotherapy practice after breast-conserving surgery for early breast cancer is described and adherence to national and international guidelines is assessed. Furthermore, results are compared with an earlier survey in northern Italy and international r...

INTRODUCTION TomoTherapy (Accuray, Sunnyvale, CA) has recently introduced a static form of tomotherapy: TomoDirect™ (TD). This study aimed to evaluate TD against a contemporary intensity modulated radiation therapy (IMRT) alternative through comparison of target and organ at risk (OAR) doses in breast cancer cases. A secondary objective was to evaluate planning efficiency by measuring optimisat...

Reliable attenuation correction represents an essential component of the long chain of modules required for the reconstruction of artifact-free, quantitative brain positron emission tomography (PET) images. In this work we demonstrate the proof of principle of segmented magnetic resonance imaging (MRI)-guided attenuation and scatter corrections in three-dimensional (3D) brain PET. We have devel...