نتایج جستجو برای: ray angiography
تعداد نتایج: 339834 فیلتر نتایج به سال:
Temporal Trends in X-Ray Exposure during Coronary Angiography and Percutaneous Coronary Intervention
The purpose was to evaluate patient radiation doses and compare with other interventional procedures. One hundred and twenty-eight procedures were carried out with a recently installed mobile undercouch C-arm machine with a 23-cm diameter image intensifier. The radiation dose is provided by the X-ray machine, in terms of cumulative dose (CD). Kerma-Area product (KAP) was then estimated from CD ...
OBJECTIVES The aim of this retrospective study was twofold: (1) to show the role of multi-detector computed tomography angiography (MDCTA) in the evaluation of intracranial arterial anatomic variations; (2) to highlight their clinical importance with illustrated example cases. MATERIALS AND METHODS One thousand seven hundred thirty-nine patients who underwent carotid and/or cerebral CTA using...
common variable immunodeficiency (cvid) is the most common symptomatic primary immunodeficiency disease, predisposing the patients to various tissue involvement and organ damage. here a 16-year-old boy is presented who was referred to our center with cough, dyspnea,cyanosis, and history of recurrent pneumonia. the diagnosis of cvid was made according to reduction all serum immunoglobulin levels...
We are designing a compact inverse Compton scattering hard X-ray (33 keV) source based on X-band linac. X-band 1.5and 3.5-cell photocathode RF guns and X-band linac were analyzed with PARMELA simulation, and X-ray flux was estimated for several types of lasers. The theoretical scaling law of the RF guns among charge, emittance, and RF wavelength is confirmed by PARMELA. The maximum RF field at ...
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