نتایج جستجو برای: computed tomography ct

تعداد نتایج: 349370  

Journal: :iranian journal of radiology 0
michele scialpi department of surgical and biomedical sciences, division of radiology 2, perugia university, s. maria della misericordia hospital, perugia, italy; department of surgical and biomedical sciences, division of radiology 2, perugia university, s. maria della misericordia hospital, p. o. box: 06156, perugia, italy. tel: +75-5783507, fax: +75-5783488 luisa pierotti department of surgical and biomedical sciences, division of radiology 2, perugia university, s. maria della misericordia hospital, perugia, italy sabrina gravante department of surgical and biomedical sciences, division of radiology 2, perugia university, s. maria della misericordia hospital, perugia, italy alberto rebonato department of surgical and biomedical sciences, division of radiology 2, perugia university, s. maria della misericordia hospital, perugia, italy irene piscioli department of radiology, budrio hospital, azienda usl bologna, budrio, italy alfredo d’andrea division of radiology, san giuseppe moscati hospital, aversa, italy

conclusion the designed split-bolus mdct technique can be proposed alternatively to triphasic mdct and in a single-pass to pvp in the initial staging and in the follow-up respectively in oncologic patients. patients and methods we retrospectively analyzed the follow-up split-bolus 64-detector row ct protocol in 36 oncologic patients to characterize focal liver lesions. the split-bolus mdct prot...

H.R. Khosravi, L. Sadri, S. Setayeshi,

Background: Patient radiation doses from computed tomography (CT) are increasing due to the number of CT examinations performed every day. The aim of this study was assess and evaluate patient radiation doses for adult’s common CT examinations to derive local diagnostic guidance levels for common CT examinations. Materials and Methods: Volume and weighted computed tomography dose index (C...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بوعلی سینا - دانشکده مهندسی 1390

رادیوگرافی دندان با تشخیص و درمان بیماری های دندان به طور انکار ناپذیری تلفیق شده است، حتی به جرات می توان گفت انجام درمان مطلوب ریشه بدون داشتن رادیوگرافی مناسب ممکن نیست. پیشرفت تکنیک های رادیوگرافی مانند ابداع روش های موازی و نسلهای مختلف computed tomography (ct) باعث ارتقای کیفیت درمان ریشه دندان شده است. روش های معمول رادیوگرافی به دلایل مختلف از جمله ماهیت دو بعدی بودن آن، در بسیاری از مو...

Journal: :asia oceania journal of nuclear medicine and biology 0
yuka yamamoto department of radiology, faculty of medicine, kagawa university, kagawa, japan yoshihiro nishiyama department of radiology, faculty of medicine, kagawa university, kagawa, japan

osteoma is a benign bone-forming tumor that usually arises in the craniofacial bones and rarely in the long bones. clavicular involvement is extremely rare. we report a 51-year-old woman with osteoma of the left clavicle. radiograph of the left shoulder showed a well-defined lobulated blastic mass in the proximal and mid-portion of the left clavicle. bone scintigraphy was performed 4 hours afte...

Gliomas account for almost 80% of primary malignant brain tumors in adults. Magnetic Resonance imaging (MRI) is still the gold standard for diagnosis of brain tumors and brain 99mTc-tetrofosmin Single Photon Emission Computed Tomography (99mTc-tetrofosmin-SPECT) has been established as a useful tool for their evaluation. Fluorine-18–2-fluoro-2-deoxy-d-glucose positron emi...

Journal: :asia oceania journal of nuclear medicine and biology 0
domenico albano nuclear medicine, spedali civili brescia, brescia, italy. giovanni bosio nuclear medicine, spedali civili brescia, brescia, italy. mattia bertoli nuclear medicine, spedali civili brescia, brescia, italy. giulia petrilli department of molecular and translational medicine, anatomic pathology section, spedali civili brescia, brescia, italy francesco bertagna nuclear medicine, spedali civili brescia, brescia, italy.

hepatosplenic candidiasis is a fungal infection, which mostly affects patientswith hematologic malignancies such as leukemia. the pathogenesis of thisinfection is not clear yet, and the liver is the most commonly affected organ.diagnosis of hepatosplenic candidiasis can be only established via biopsy,since computed tomography (ct) scan, ultrasonography, and magneticresonance imaging (mri) yield...

ژورنال: مجله دندانپزشکی 2011
اسکندرلو, امیر, رحیمی, عزیزاله, رستم پور, نیما, قاضی خانلو ثانی, کریم ,

Background and Aims: The evaluation of absorbed dose received by patients could give useful information for radiation risk estimation. This study was performed to compare the entrance skin dose received by patients in cone beam computed tomography (CBCT), conventional and spiral computed tomography (CT).Materials and Methods: In this experimental study, 81 calibrated TLD chips were used. the TL...

Journal: :iranian journal of radiation research 0
l. sadri department of nuclear engineering and physics, amir kabir university of technology, tehran, iran h.r. khosravi nuclear sciences school, nuclear science and technology research institute, and nuclear & radiation support department, iranian nuclear regulatory authority, tehran, iran s. setayeshi department of nuclear engineering and physics, amir kabir university of technology, tehran, iran

background: patient radiation doses from computed tomography (ct) are increasing due to the number of ct examinations performed every day. the aim of this study was assess and evaluate patient radiation doses for adult’s common ct examinations to derive local diagnostic guidance levels for common ct examinations. materials and methods: volume and weighted computed tomography dose index (ctdivol...

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