نتایج جستجو برای: diagnostic reference level

تعداد نتایج: 1572347  

2004
A. Aroua A. Besançon I. Buchillier-Decka P. Trueb J.-F. Valley F. R. Verdun W. Zeller

The aim of this work is to describe how diagnostic reference levels (DRLs) are being established and implemented in Switzerland. Several nationwide surveys are launched in order to determine the patient dose distributions for a number of CT and fluoroscopy examinations that will be used to set up the corresponding DRLs. Meanwile the european recommended DRLs are considered. When no European rec...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و علوم انسانی 1393

abstract: the present study is an attempt to find out cultural exophoric references in iranian high-school elt textbooks and touch stone series to compare the frequency of occurrence of such references in these books. the purpose is to find out which of the series of the books under investigation impose a greater referential burden on efl learners as far as their reading comprehension of the ...

Journal: :Journal of Medical Radiation Sciences 2020

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