نتایج جستجو برای: patient effective dose
تعداد نتایج: 1578242 فیلتر نتایج به سال:
Background: Radiation dose knowledge through Xray examinations and their distribution in Iran provides useful guidance on patient dose reduction. The results of the entrance skin dose (ESDs) of five common radiographies in all radiology centers in Yazd province were reported in our previous study (2003). In the present study we have evaluated the collective effective dose of convention...
Radiation dose in x-ray computed tomography (CT) has become a topic of high interest due to the increasing numbers of CT examinations performed worldwide. This review aims to present an overview of current concepts for both scanner output metrics and for patient dosimetry and will comment on their strengths and weaknesses. Controversial issues such as the appropriateness of the CT dose index (C...
Introduction: Cardiac CT (Computed Tomography) angiography applies as a pre-exam method for evaluating the patients with medical problems in their cardiac arteries. Due to the high delivered dose in this imaging method, dose reduction techniques and imaging strategies that serve the images quality with minimum patient dose are the subjects for investigation and research studies. This study will...
The objective of this work was to estimate patient doses (dose-area product, organ dose, effective dose and entrance surface dose) for barium procedures. A total of 175 procedures, in 175 patients, for five different examination categories was analysed. Dose-area product was determined using a transmission ionization chamber. Organ dose and effective dose were assessed using a knowledge of the ...
Introduction:Intravenous urography (IVU) test includes high number of images and extended imaging size. These make IVU as a diagnostic method with high absorbed doses by sensitive organs such as intestine and gonads in pelvic-abdominal area. In this study absorbed doses of pelvic-abdomen sensitive organs such as Adrenal, Bladder, Colon and Gonads in IVU test. <stron...
visceral leishmaniasis (vl) is usually treated with pentavalent antimonial drugs given alone or in combination with other drugs. the efficacy of these treatments is diminishing, however, and development of alternative treatments has been recommended.we studied 13 patients with leishmaniasis who were unresponsive to meglumine antimonate, at a dose of 20 mg/kg body weight/per day given for 30 day...
background: ischemic brain strokes consisttwo‑thirdsof strokesand their complications bear a lot of disability for patient and society. in this study, we seek for effect of erythropoietin on ischemic brain stroke’s outcomes according to national institutes of health stroke scale (nihss) changes. methods: this study is a rct (randomized clinical trial). all patients with focal neurologic deficit...
Background and Aim: CT scan as a medical imaging modality delivers high radiation dose to the patients. Since eye and thyroid are two radiosensitive organs in this study, those effective doses were evaluated in brain CT scan. Using TLD as dosimeter. Materials and Methods: This cross-sectional study was carried out in three selective hospitals in Rasht in September and October in year 2016.TLD ...
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