نتایج جستجو برای: delayed imaging
تعداد نتایج: 552358 فیلتر نتایج به سال:
در این پایان نامه به بررسی کمی یک سیستم تصویربرداری پراش افزوده(diffraction enhanced imaging-dei) پرداخته ایم. بدین منظور مشخصات توان و شار و نحوه توزیع پرتوهای سینکروترون مورد بررسی قرار داده و سپس محاسبات پرتو خط بیم(national synchrotron light source) nsls شامل رزولوشن انرژی و شار رسیده به نمونه را انجام دادیم و در نهایت با ارائه یک مدل برای سیستم dei میزان بهبود کنتراست تصویر در این سیستم نس...
We aim to demonstrate the application of free-breathing prospectively gated carbon nanotube (CNT) micro-CT by evaluating a myocardial infarction model with a delayed contrast enhancement technique. Evaluation of murine cardiac models using micro-CT imaging has historically been limited by extreme imaging requirements. Newly-developed CNT-based x-ray sources offer precise temporal resolution, al...
Purpose: The purpose of the present study is to evaluate the value of dual-time-point F-18 FDG PET/CT imaging in malignant lymphoma (ML) to differentiate between benign lesions and residual or relapsing malignant lesions. Patients and methods: This prospective study included 252 lymph nodes in 60 patients. F-18 FDG PET/CT scan was performed at 50 min (early scan) and at 100 min (delayed scan) a...
conclusions late inflammation may occur around spinal instruments and results in cutaneous fistula formation. after oral or intravenous antibiotic treatment, total device extraction is the cornerstone of treatment. case presentation here we report an unusual 17-year delayed fistula formation after primary spinal instrumentation due to spinal trauma. he was admitted to ghaem general hospital, a ...
Atherosclerotic burden has become the focus of cardiovascular risk assessment. PET/computed tomography (CT) imaging with tracers 18F-fluorodeoxyglucose and 18F-sodium fluoride shows arterial wall inflammation microcalcification, respectively. Arterial uptake both is modestly age dependent. consistently associated factors more easily measured in heart. Because extremely high sensitivity, ultrash...
OBJECTIVE We investigated the feasibility of delayed computed tomography (CT) arthrography for evaluation of human knee cartilage in vivo. Especially, the diffusion of contrast agent out of the joint space and the optimal time points for imaging were determined. DESIGN Two patients were imaged using delayed CT arthrography and delayed gadolinium-enhanced magnetic resonance imaging of cartilag...
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