introduction intensity modulated radiation therapy (imrt) has made a significant progress in radiation therapy centers in recent years. in this method, each radiation beam is divided into many subfields that create a field with a modulated intensity. considering the complexity of this method, the quality control for imrt is a topic of interest for researchers. this article is about the various ...

introduction: in 2000, the unscear reported that ct constitutes 5% of all the medical x-ray  examinations and it contributes 34% of the resultant collective dose worldwide. children are more  sensitive to the ionizing radiations than adults. so, routine quality control tests are expected to be  carried out periodically on the ct scanners. the aim of this research was to estimate the effective  ...

background and objectives: prunus domestica (plum) has been considered as a useful remedy for several disorders in iranian traditional medicine (itm). it has cold and wet temperament and is used as syrup for hot temperament diseases such as hot headache and stomach disorders. in the present study, plum syrup has been formulated according to itm manuscripts and quality control evaluations have b...

introduction: [64cu]diacetyl-bis(n4-methylthiosemicarbazone) ([64cu]atsm) is a well-established hypoxia imaging tracer with reproducible production and significant specifity. in this work the high yield production and quality control as well as imaging studies in healthy rabbits is reported. methods: copper-64 produced via the 68zn(p,an)64cu nuclear reaction (30 mev protons at 180 µa) was used...

introduction: using labeled peptides enjoys high importance in nuclear medicine. somatostatin analogs labeled with different radionuclide are vastly investigated for diagnosis or treatment of somatostatin receptor positive tumors. labeling somatostatin analogs with 99mtc as alternative of 111in needs doing different quality control method for determination of labeling yield and complex stabilit...

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: Acceptance test is a necessary procedure after SPECT system installation. The goal of this test is to reveal system's present condition, to compare it with manufacturer's specifications and also as a base for later tests. Methods: This study investigated four SPECT systems in Tehran. All of the quality control tests are performed on the basis of NEMA and IAEA recommendations...

Jacobsson AH Vitrolife Sweden AB, Goteborg, Sweden