Volume 9, Issue 1
مرور بر اساس
ارسال های اخیر
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A Comparison of the Dosimetric Parameters of Cs-137 Brachytherapy Source in Different Tissues with Water Using Monte Carlo Simulation
(Mashhad University of Medical Sciences, 2012-03-01)Introduction After the publication of Task Group number 43 dose calculation formalism by the American Association of Physicists in Medicine (AAPM), this method has been known as the most common dose calculation method ...
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A New Method for Detection of Backscattered Signals from Breast Cancer Tumors: Hypothesis Testing Using an Adaptive Entropy-Based Decision Function
(Mashhad University of Medical Sciences, 2012-03-01)Introduction In recent years methods based on radio frequency waves have been used for detecting breast cancer. Using theses waves leads to better results in early detection of breast cancer comparing with conventional ...
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Introducing an Optimized Method for Obtaining X-ray Diffraction Patterns of Biological Tissues
(Mashhad University of Medical Sciences, 2012-03-01)Introduction Individual X-Ray diffraction patterns of biological tissues are obtained via interference of coherent scattering with their electrons. Many scientists have distinguished normal and cancerous breast tissue, ...
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Evaluation of Sonochemiluminescence in a Phantom in the Presence of Protoporphyrin IX Conjugated to Nanoparticles
(Mashhad University of Medical Sciences, 2012-03-01)Introduction When a liquid is irradiated with high-intensity and low-frequency ultrasound, acoustic cavitation occurs and there are some methods to determine and quantify this phenomenon. The existing methods for ...
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Evaluation of the Effects of Inhomogeneities on Dose Profiles Using Polymer Gel Dosimeter and Monte Carlo Simulation in Gamma Knife
(Mashhad University of Medical Sciences, 2012-03-01)Introduction Polymer gel dosimeters offer a practical solution to 3D dose verification for conventional radiotherapy as well as intensity-modulated and stereotactic radiotherapy. In this study, EGSnrc calculated and ...
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Developing a Verification and Training Phantom for Gynecological Brachytherapy System
(Mashhad University of Medical Sciences, 2012-03-01)Introduction Dosimetric accuracy is a major issue in the quality assurance (QA) program for treatment planning systems (TPS). An important contribution to this process has been a proper dosimetry method to guarantee ...
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Applicator Attenuation Effect on Dose Calculations of Esophageal High-Dose Rate Brachytherapy Using EDR2 Film
(Mashhad University of Medical Sciences, 2012-03-01)Introduction Interaluminal brachytherapy is one of the important methods of esophageal cancer treatment. The effect of applicator attenuation is not considered in dose calculation method released by AAPM-TG43. In this ...
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Repeatability of Detecting Visual Cortex Activity in Functional Magnetic Resonance Imaging
(Mashhad University of Medical Sciences, 2012-03-01)Introduction As functional magnetic resonance imaging (fMRI) is too expensive and time consuming, its frequent implementation is difficult. The aim of this study is to evaluate repeatability of detecting visual cortex ...



