نتایج جستجو برای: control equipment

تعداد نتایج: 1392000  

Journal: :iranian journal of medical physics 0
peyman hejazi medical physicist, department of pharmacology and medical physics, faculty of medicine, semnan university of medical sciences

introduction the main goal of this study was to perform quality control test on all radiography units operating in golestan province of iran. materials and methods forty-four x-ray units were examined based on general accepted programs for quality control. eight parameters including kvp accuracy, kvp reproducibility, ma-time reciprocity, exposure linearity, exposure reproducibility, timer accur...

Introduction: Regular implementation of quality control (QC) program in diagnostic X-ray facilities may affect both image quality and patient radiation dose due to the changes in exposure parameters. Therefore, this study aimed to investigate the status of randomly selected conventional radiographic X-ray devices installed in radiology centers of Great Khorasan Province, Iran, to produce the da...

Introduction: The purpose of the current study was to investigate the effect of X-ray spectra on the sensitivity of a polymer gel dosimeter imaged with a conventional computed tomography (CT) scanner. Material and Methods: The whole process of CT imaging of an irradiated polymer gel was simulated by MCNPX Monte Carlo (MC) code. The imaging of polyacrylamide gel was accomplished by means of a co...

Journal: :Journal of the Illuminating Engineering Institute of Japan 1987

Journal: :The Journal of the Institute of Television Engineers of Japan 1971

Journal: :The Forestry Chronicle 1949

Journal: :Journal of the Air Pollution Control Association 1981

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1386

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