نتایج جستجو برای: ct scan tehran
تعداد نتایج: 204514 فیلتر نتایج به سال:
b-cell lymphoblastic lymphoma (b-lbl) is an uncommon subtype of pediatric non-hodgkin lymphoma (nhl) which rarely involves the skin primarily. the positron emission tomography with 2-deoxy-2-[fluorine- 18] fluoro-d: -glucose integrated with computed tomography (18f-fdg pet/ct) scan findings of a 8-year-old boy with cutaneous b-lbl were presented. pet/ct scan demonstrated mild fdg uptake in the ...
conclusions a high index of suspicion is essential for early detection of ddr and dddr. patients with high impact injuries or surrounding organ damage should be followed with serial clinical examinations, follow-up radiologic assessments, and even re-exploration in situations highly suspicious for diaphragmatic injuries. introduction diaphragmatic rupture (dr) is an uncommon, potentially seriou...
clavicular bone tumors occur in less than 0.5 percent of bone tumors. primary chondrosarcoma is very rare even among clavicle tumors. the main symptom is a touchable mass in 69 % of patients. dedicated centers using fna and cytology can reach a correct diagnosis in 94% of cases. treatment planning is done using simple x-ray, ct-scan, shoulder mri, chest ct-scan, and whole body technetium scan. ...
بررسی تحلیل ریشه دندانهای ثنایای مجاور دندان نیش نهفته فک بالا در تصاویر رادیوگرافی معمولی و CT scan
مقدمه: تحلیل ریشه دندانهای ثنایا در فک بالا از عوارض نهفتگی دندان نیش می باشد که می تواند منجر به کشیدن دندان، نیاز به درمان ارتودنسی ویا هر دو گردد. هدف از انجام این مطالعه بررسی تحلیل ریشه دندانهای ثنایای مجاور دندان نیش نهفته در فک بالا در رادیوگرافیهای معمولی و CT scan می باشد. مواد و روش ها: این مطالعه بر روی 14بیمار (با دامنه سنی 20-13 ساله) که دارای 18 دندان نیش نهفته بودند، صورت گرفت...
Background: Given the children's susceptibility to the harmful radiation of computerized tomography (CT) scans, ultrasonography can be a good alternative in staging pediatric lymphoma. The present study aimed to assess the predictive value of abdominal ultrasonography compared to CT scan in children with lymphoma. Materials and Methods: Fifty-two children with confirmed lymphoma were included ...
introduction: maxillofacial region is one of the most complex regions in the body and radiographic imag-ing of this region is difficult because of clinical situation and patient’s cooperation. aim of this study was to evaluate efficient of waters as a preliminary radiography for diagnosis of midface fractures. methods and materials: this was experimental, cross-sectional and prospective study. ...
در پژوهش حاضر نانوذرات شامل فازهای Fe3O4 و Fe(OH)3 به روش همرسوبی تولید شدند. اثر تغییر pH محیط بر اندازه، ساختار و خواص مغناطیسی نانوذرات توسط تکنیکهای TEM، XRD و VSM مطالعه شد. نتایج این پژوهش نشان داد که نانوذرات بدست آمده در pH=11.5 برای مطالعات MRI مناسب هستند. ذرات بدست آمده توسط محلول Iohexol به عنوان سورفکتانت، در محیط آبی پراکنده و پایدار شدند. سوسپانسیون بدست آمده به صورت وریدی به مو...
OBJECTIVES We evaluate whether integrated fluorodeoxyglucose-positron emission tomography and computed tomography (FDG-PET/CT) scan can diagnose the presence of lymph node metastasis more accurately than computed tomography (CT) scan alone. METHODS Forty-two patients with lung cancer preoperatively underwent integrated PET/CT scan using FDG and CT scan and underwent pulmonary resection and ly...
Background & Aim: Measuring the length of kidneys is an important issue in diagnosis and treatment of renal diseases. In various diseases, kidneys become larger or smaller than normal. Ultrasonography is a suitable method for measuring renal length because it is accurate, noninvasive, available and with low cost. Nowadays, multislice spiral CT scanners are widely used for evaluation of rena...
Introduction: The rapid use of computed tomography (CT) scan is of great concern, due to increase in patients’ dose. Optimization of CT protocol is a vital issue in dose reduction. This study aimed to optimize radiation dose in cranial CT and assess modifications in image quality under radiation dose reduction. Material and Methods: A poly(me...
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