نتایج جستجو برای: 3 dimensional ct scan
تعداد نتایج: 2279198 فیلتر نتایج به سال:
abstract background: tibial torsion is one of the torsion density which rotating in the longitudes axis of the leg. to measure this deformity, different methods such as radiographic or clinical methods were presented and introduced. methods: in this quasi-experimental study, 30 male athletes were selected randomly. their tibial torsion angle was measured using ct scan, lavand, lokomso, foot p...
Objective(s): In clinical practice, approximately 10-25% of post-surgical differentiated thyroid carcinoma (DTC) patients with high serum thyroglobulin (Tg) and negative 131I whole-body scan (WBS) have poor prognosis due to recurrent or metastatic lesions after radioactive iodine treatment. The purpose of this study was to evaluate the value of 18F-FDG PET/CT scan in DTC patients with high seru...
This paper presents a method for segmenting bone in magnetic resonance images. The starting point is the formulation of a Gradient Vector Flow (GVF) snake extended to include statistical shape information. This method exploits the diffusion process used by the GVF snake and improves its capacity to deal with occlusion problems by adding a shape term to the traditional scheme. A dataset of coron...
Acute head trauma is one of the most common causes of emergency hospital admissions and its two important complications are subdural haematomas and epidural haematomas, for which the CT scan is a main tool of diagnosis. Differentiation of this two haematoms is important and the ability of CT scan to differentiate them always been in question. This descriptive study aims to evaluate the ability ...
Background and purpose: The purpose of this study was to compare ultrasound and urine analysis and shock index with CT scan in the diagnosis of intraabdominal injury (IAI) in blunt abdominal trauma (BAT). Material and Methods: During 2011/3/21 to 2012/3/20, all adult patients with BAT presenting to the Emergency Department of Imam Hossain Hospital were studied. The sensitivity, specificity, po...
در این پروژه روشی برای مدل سازی قطعات صنعتی از عکسهای ct ارائه شده است. در فصل دوم فیزیک پرتو برداری ct و تولید تصویر به اختصار توضیح داده شده است. در فصل سوم الگوریتمهای پردازش تصویر که در این پروژه به کار رفته شرح داده شده است. توسط این الگوریتم ها عمل قطعه بندی و شناسایی لبه انجام می شود که در فصل مذکور روش های لبه یابی به کمک الگوریتم sobel و canny و مزایا و معایب هر کدام تشریح شده است و در...
introduction: endoscopy is an invasive procedure and finding noninvasive alternative tools in detection of probable upper gastrointestinal (gi) tract injuries following caustic ingestion is an area of interest. the present study aimed to evaluate the screening performance characteristics of thoraco-abdominal computed tomography (ct) scan in this regard. methods: this prospective cross sectional...
FDG PET CT scan is considered to be a sensitive tool to detect skeletal metastasis in known malignancies. However, it’s high sensitivity and low specificity may account for false positive diagnosis in cases of trauma, infection, inflammation and other benign conditions. Skeletal hemangioma is one of the common benign conditions which are typically ametabolic on FDG PET CT with no uptake on bone...
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