نتایج جستجو برای: high resolution ct scan

تعداد نتایج: 2327411  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

‏‎applications such as high definition viedeo reproduction, portable computers, wireless, and multimedia demand, and ever-increasing need for ligh-frequency high-resolution and low-power analog-to-digital converters. flash, two-step flash, and pipeline convertors are fast but consume large amount of power and require large area. to overcome these problems, successive approximation converter blo...

Journal: :Diagnostic radiology and radiotherapy 2018

Mohsen Shoja, Shoka Shahryari

Introduction: Becuase of the most radiation dose receiving by human is related to medical radiation exposures, and also Computed Tomography (CT) is a special type of radiography that is one of the main method of radiation exposure today, and it's growing increasingly. Therefore, radio technologists working in CT scan imaging centers, are at risk of radiation. Due to the high am...

Journal: :iranian journal of radiology 0
zahra mahboubifooladi shahid beheshti university of medical sciences, tehran, iran; shahid beheshti university of medical sciences, tehran, iran hooman bahramimotlagh shahid beheshti university of medical sciences, tehran, iran

results the study consisted of 40 patients (all men, with mean age of 33.38 ± 7.4 years). ct evaluation with standard dose were positive in 22 patients (55%). only 1 (2.5%) ct scan assigned as unacceptable by each radiologist in low-dose group. noise average of low-dose protocol, was approximately 7 times greater than standard dose group, while dlp and ed are 9.7 times smaller. in comparison wi...

2014
Lening Zhang Haibo Huang Jia Guo Lin Li Hua Xin

To investigate the role of Computer Tomography (CT) in the esophageal cancer surgery. 97 cases confirmed by pathology as esophageal cancer were retrospectively analyzed with preoperative Computer Tomography images and intraoperative situation. Tthe Computer Tomography can accurately display the thickness and length of the lesion segment esophageal wall, the relations between tumor and the aorta...

Background and Objective: Measurement of inflammatory markers and lactate dehydrogenase (LDH) may contribute to the evaluation of lung involvement severity. This study aimed to evaluate relationship between severity of primary lung involvement with highest level of erythrocyte sedimentation rate (ESR) and LDH in patients with COVID-19. Materials and Methods: This descriptive-analytical study w...

Journal: :Journal of Cardiovascular Electrophysiology 2007

Journal: :AJR. American journal of roentgenology 1986
K W Pojunas D L Daniels A L Williams M K Thorsen V M Haughton

Determination of the site of excessive hormone production in Cushing syndrome is possible with biochemical tests in 80% of cases. High-resolution CT of both the pituitary and adrenal glands was used to evaluate eight patients with surgically verified ACTH-secreting pituitary microadenomas and one patient with ectopic Cushing syndrome. Three ACTH-secreting microadenomas were demonstrated by CT. ...

Journal: :trauma monthly 0
hamid reza talari trauma research center- kashan university of medical sciences, kashan, iran nooshin moussavi trauma research center- kashan university of medical sciences, kashan, iran masoumeh abedzadeh kalahroudi trauma research center- kashan university of medical sciences, kashan, iran hossein akbari trauma research center- kashan university of medical sciences, kashan, iran sommayeh zoghi trauma research center- kashan university of medical sciences, kashan, iran

background outcome determination of head trauma is important for medical decision-making. to determine the consequences by using ct findings, the marshall and rotterdam criteria were introduced. few studies have been conducted to determine the diagnostic value of the rotterdam criteria. objective this study assesses the diagnostic value of the rotterdam criteria score with early outcome for tra...

Journal: :medical journal of islamic republic of iran 0
mohamad reza guity orthopaedic department of emam khomeini hospital, tehran, iran.سازمان اصلی تایید شده: بیمارستان امام خمینی تهران shaharam akhlaghpour radiologistسازمان های دیگر: رادیولوژیست reza yousefian national iranian oil hospital.سازمان اصلی تایید شده: وزارت نفت سازمان های دیگر: بیمارستان نفت

background : glenoid bone damages consisting of anterior rim erosion and bony avulsion are very important in decision making for treatment of recurrent dislocation in shoulder joint. this study was aimed to determine the prevalence of these damages in patients with anterior recurrent shoulder dislocation. methods : the study was a cross-sectional study evaluating patients with unstable shoulder...

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