نتایج جستجو برای: diagnostic equipment quality control reproducibility

تعداد نتایج: 2304140  

  Introduction: The Republic of Korea has developed a national standard based on which diagnostic X-ray equipment must be tested every 3 years. Accordingly, the performance of X-ray equipment used in all hospitals is evaluated by national certification bodies in compliance with the safety management regulations for X-ray equipment. However, if the equipment i...

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: :iranian journal of medical physics 0
mohsen asadinezhad department of radiology technology, school of paramedical sciences, mashhad university of medical sciences mohammad taghi bahreyni toossi professor of medical physics, mashhad university of medical sciences, mashhad, iran ali ebrahiminia assistant professor of medical physics, biochemistry and medical physics dept., school of medicine, guilan university of medical sciences, rasht, iran masoumeh giahi student of radiology technology, department of radiology technology, school of paramedical sciences, mashhad university of medical sciences, mashhad, iran

introduction quality control (qc) techniques are used in monitoring and maintenance of the components of an x-ray system. qc of radiology devices plays a significant role in reduction of medication dose and optimization of image quality. this study aimed to conduct qc tests on randomly selected radiology devices, installed in diagnostic imaging departments of iran. materials and methods in tota...

Introduction Quality control (QC) techniques are used in monitoring and maintenance of the components of an x-ray system. QC of radiology devices plays a significant role in reduction of medication dose and optimization of image quality. This study aimed to conduct QC tests on randomly selected radiology devices, installed in diagnostic imaging departments of Iran. Materials and Methods In tota...

Journal: :iranian journal of medical physics 0
behrouz rasuli department of radiology technology, behbahan faculty of medical sciences, behbahan, iran mohamad javad tahmasebi birgani department of radiation therapy, golestan hospital, ahvaz jundishapur university of medical sciences, ahvaz, iran

introduction quality control techniques used to test the components of the radiological system and verify that the equipment is operating satisfactorily. in this study, quality control (qc) assessment of conventional radiology devices was performed in frequently visited radiology centers of khuzestan province, iran. materials and methods fifteen conventional radiology devices were examined, bas...

Journal: :iranian journal of medical physics 0
mohammad-hossein zare department of medical physics, faculty of medicine, mashhad university of medical sciences, mashhad, iran hamid-reza sadoughi department of medical physics, faculty of medicine, mashhad university of medical sciences, mashhad, iran

introduction using ionization radiation for diagnostic and treatment fields has increased worldwide dramatically. this issue causes an increase in the absorbed and collective doses in society noticeably. with regard to two main principles in radiation protection, i.e., justification and optimization, it is necessary to have imaging process with minimum dose to patients and personnel. for achiev...

Ali Mahmoud- Pashazadeh Behrouz Rasuli, Jafar Fatahi-Asl Mohamad Javad Tahmasebi Birgani, Mohammad Ghorbani Mozafar Naserpour

Introduction Quality control techniques used to test the components of the radiological system and verify that the equipment is operating satisfactorily. In this study, quality control (QC) assessment of conventional radiology devices was performed in frequently visited radiology centers of Khuzestan province, Iran. Materials and Methods Fifteen conventional radiology devices were examined, bas...

Journal: :Iryou kikigaku (The Japanese journal of medical instrumentation) 2012

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...

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