نتایج جستجو برای: x ray computed tomography

تعداد نتایج: 835919  

Journal: :IEEE Signal Processing Magazine 1997

Journal: :Open Journal of Soil Science 2015

حقی, سیدضیااله, محمدی فرد, مهیار, هاشمی, جهان بخش,

Esophageal duplication cyst is a rare congenital foregut anomaly. Making a definite diagnosis is difficult preoperatively, although various imaging techniques can help to localize these lesions and exclude other causes. Here we present a patient who had an esophageal duplication cyst with infection, in which its signs on chest x-ray, computed tomography (CT), and barium swallow examination are ...

Ali Reza Shakibafard Fariba Zarei, Mahdi Dodangeh Reza Jalli, Rezvan Ravanfar Haghighi, S. Chatterjee Sepideh Sefidbkht Somayeh Gholami Bardeji Vani VC

Introduction: The basis of image formation in Computed Tomography (CT) lies in the x-ray linear attenuation coefficient of the scanned material. Compton scattering and photoelectric effect are the dominant interactions of the x-ray photons with the subject, in the range of diagnostic radiology. These two coefficients are important in tissue characterization by Dual-Energy CT (D...

G. Ali Hossein-Zadeh, Hamid Soltanian-Zadeh,

ABSTRACTNeuroimaging allows noninvasive evaluation of the anatomy, physiology, and function of the brain. It is widely used for diagnosis, treatment planning, and treatment evaluation of neurological disorders as well as understanding functions of the brain in health and disease. Neuroimaging modalities include X-ray computed tomography (CT), magnetic resonance imaging (MRI), single photon emis...

Journal: :Japanese Journal of Radiological Technology 1990

Journal: :The Journal of the Institute of Television Engineers of Japan 1989

Journal: :Journal of the Optical Society of America A 2009

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