نتایج جستجو برای: روشman ray
تعداد نتایج: 302977 فیلتر نتایج به سال:
در این پایان نامه ترکیب های فلزی جدید با استفاده از ترکیب های انتقال پروتون به عنوان لیگاند و یون فلز های کروم، کبالت و آهن سنتز شده و توسط تکنیک های ir، massو تجزیه عنصری مورد شناسایی قرار گرفته اند. نظر به اینکه عمده کار مبنی بر بررسی ساختاری ترکیب های سنتز شده است، کریستال مناسب رشد داده شده و ساختار آن به روش x-ray کریستالوگرافی مورد بررسی قرار گرفته است. از واکنش بین fecl2.4h2o با پیریدین-...
Introduction Radiation exposures from diagnostic medical examinations are generally low and are almost always justified by the benefits of accurate diagnosis of possible disease conditions. Therefore, entrance skin dose (ESD), body organ dose (BOD), and effective dose (ED) from adult patients undergoing routine thorax posterior-anterior (PA) and thorax right lateral (RLAT) were estimated in Uni...
Background: Panoramic imaging is one of the most common imaging methods in dentistry. Regarding the side-effects of ionizing radiation, it is necessary to survey different aspects and details of panoramic imaging. In this study, we compared the absorbed x-ray dose around two panoramic x-ray units: PM 2002 CC Proline (Planmeca, Helsinki, Finland) and Cranex Tome (Soredex, Helsinki, Finland).<br ...
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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...
Background: The sporadic cases of radiation-activated multiple sclerosis (MS) has been previously described, with a few studies focused on the relationship between radiation and the risk of MS. The aim of our study was to evaluate the association between history of X-ray radiation and MS. Methods : This case-control study was conducted on 150 individuals including 65 MS patients and 85 age-...
Intussusception is the most common cause of intestinal obstraction in children aged 3 months to 6 years. Complete understanding of its clinical and radiographic manifestations can play a major role in the early diagnosis and treatment and prevents its complications. In this study plain abdominal X-rays of 51 patients with intussusception were evaluated. Suggestive radiographic signs of the dise...
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