Since its original conception in 1959, by Nobel physicist Richard P Feynman, the notion of nanotechnology and its potential ramifications have not only created fascination,but also intense scientific efforts and scrutiny. One of the most promising applications of nanotechnology is in the context of medicine. Due to their unique size-dependent properties nanomaterials such as nanoparticles offer...

background: ct scan and nuclear medicine exams deliver a great part of medical exposures. this study examined professional radiation hazards in ct scan and nuclear medicine workers.   methods : in a cross sectional study 30 occupationally exposed workers and 7 controls (all from personnel of a laboratory) were selected. physical dosimetry was performed for exposed workers. blood samples were ob...

The major difference between Iranian traditional medicine and allopathic medicine is in the application  of  evidence  and  documents.  In  this  study,  criteria  for  evidence-based  practice  in  Iranian traditional medicine and its rules of practice were studied. The experts' views were investigated through in- depth, semi-structured interviews and the results were categorized into four mai...

gamma camera is an important apparatus in nuclear medicine imaging. its detection part is consists of a scintillation detector with aheavy collimator. substitution of semiconductor detectors instead of scintillator in these cameras has been effectively studied. in this study, it is aimed to introduce a new design of p-n semiconductor detector array for nuclear medicine imaging. a p-n semiconduc...

introduction: radioactive materials deliver internal radiation dose to patients in nuclear medicine. manual internal radiation dose assessment is a complicated method. introduction of a simple dose calculation software is the main goal of the present study. methods: using the best current data in internal dose calculation (s-factors) recommended by icrp and by considering other technical metho...

annually, many people are irradiated for diagnostic and therapeutic purposes. assessment of radiation dose and its related risks to patients are important issues in radiation protection dosimetry. the complex mathematical calculations of the absorbed and effective doses are now done with computers. the calculations are performed with the help of anthropomorphic computational models of human bod...

مقدمه:امروزه تعدد و کیفیت نامعلوم مجلات حیطه‏های مختلف علوم پزشکی، پژوهشگران را در انتخاب مجله مناسب برای انتشار نتایج تحقیقات علمی سردرگم کرده است. شاید معیارهای سنجش کیفیت مجلات بتوانند این مشکل را تا حدودی حل کنند؛ لذا مطالعه حاضر با هدف بررسی کیفیت مجلات حوزه‏ زنان و مامایی بر اساس شاخص‏های رتبه‏بندی مجلات در پایگاه‏های اطلاعاتی معتبر انجام شد. روش کار: این مطالعه به صورت توصیفی تحلیلی و به...

introduction: today, huge quantity of medical journals with indescribable quality, have confused health researchers while choosing a suitable journal to publish their scientific results. it seems that quality measuring criteria of journals could have solved this problem to some extent. in this study, we studied quality of journals of obstetrics and gynecology field indexed in the valid database...

introduction: urinary obstructive disease is one of the most common disorders in urinary system. dilatation which is detected by sonography, is a key finding in obstruction in most of the cases, also could be found following surgery, lithotripsy and vesico–urethral reflux. radioistope diuretic washout renography is a useful method to differentiate mechanical and non mechanical obstruction. mate...