نتایج جستجو برای: radiation doses

تعداد نتایج: 334165  

Journal: :AJNR. American journal of neuroradiology 1994
P Bergeron R Carrier D Roy N Blais J Raymond

PURPOSE To evaluate stochastic and deterministic risks associated with neurointerventional procedures for the patient. METHODS Eight neurovascular interventional procedures were evaluated to determine the entrance skin dose and effective dose for the patient. Dosimetry was done with thermoluminescence dosimeters. The highest dose on the patient's head was recorded as the maximum entrance skin...

Journal: :Journal of the American College of Cardiology 2007

Journal: :iranian journal of medical physics 0
hasan zarghani medical physics department, faculty of medicine, mashhad university of medical sciences, mashhad, iran mohammad taghi bahreyni toossi medical physics department, faculty of medicine, mashhad university of medical sciences, mashhad, iran

introduction the purpose of this study was to estimate organ and effective doses in patients undergoing some common x-ray examinations in sabzevar, iran. the effective dose is one of the best parameters for describing the amount of radiation dose received by a patient undergoing any diagnostic x-ray examination. the public dose from x-ray examinations depends on various factors, and its contrib...

Journal: :iranian journal of radiation research 0
m. najafi surgery department, cancer institute, tehran university of medical science, tehran, iran h.a. nedaie radiotherapy oncology department, cancer institute, tehran university of medical sciences, tehran, iran a. lahooti radiotherapy oncology department, cancer institute, tehran university of medical sciences, tehran, iran r. omranipour surgery department, cancer institute, tehran university of medical science, tehran, iran n. nafissi khatam cancer center, khatam-ol-anbia hospital, vali asr ave, tehran, iran m.e. akbari department of surgery, shohada tajrish hospital, tajrish, qhods sq., tehran, iran

background: sentinel node biopsy (slnb) is the standard of care for breast cancer treatment and it is getting wide acceptance in iran. the radiation safety of the procedure has been investigated under controlled conditions, but the standard dose of radiotracer and techniques are not always observed in the community setting. the aim of this study was to assess the magnitude of the absorbed doses...

Journal: :journal of biomedical physics and engineering 0
f golfam tarbiat modares university b hashemi tarbiat modares university a haeri nuclear science and technology research institute a nikoofar iran university of medical sciences

background: cytogenetic tests are usually used for diagnosing predisposed individuals to cancer by determining their lymphocyte radiosensitivity. objective: to determine the potential role of radiosensitivity in predisposition of prostate cancer by comparing lymphocyte radiosensitivity of prostate cancer patients with healthy donors. materials and methods: the blood samples of 10 prostate cance...

Journal: :iranian journal of radiation research 0
l. sadri department of nuclear engineering and physics, amir kabir university of technology, tehran, iran h.r. khosravi nuclear sciences school, nuclear science and technology research institute, and nuclear & radiation support department, iranian nuclear regulatory authority, tehran, iran s. setayeshi department of nuclear engineering and physics, amir kabir university of technology, tehran, iran

background: patient radiation doses from computed tomography (ct) are increasing due to the number of ct examinations performed every day. the aim of this study was assess and evaluate patient radiation doses for adult’s common ct examinations to derive local diagnostic guidance levels for common ct examinations. materials and methods: volume and weighted computed tomography dose index (ctdivol...

Journal: :Emergency medicine journal : EMJ 2012
Ryan K L Lee Winnie C W Chu Colin A Graham Timothy H Rainer Anil T Ahuja

BACKGROUND Radiological examinations are commonly requested for patients to aid clinical diagnosis. However, many doctors do not realise how much radiation dosage their patients are exposed to during radiological investigations. This study aims to assess and compare the knowledge of radiologists and non-radiologists about radiation doses of common radiological investigations. METHODS A prospe...

A. Hakimi, A.R. Jalilian, H. Rezaeejam, M. Ghannadi-Maragheh, P. Abbasian, S. Shirvani-Aran,

Background: Therapeutic radiopharmaceuticals are designed to deliver high doses of radiation to selected target organs with an aim of minimizing unwanted radiation to surrounding healthy tissue. Due to the potential of targeted radiotherapy to treat a wide range of malignant conditions, [153Sm]-samarium maltolate was developed for possible therapeutic applications. Materials and Methods: The or...

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