نتایج جستجو برای: emission tomography
تعداد نتایج: 322382 فیلتر نتایج به سال:
Introduction:MAMMI is a dedicated PET based on high resolution detectors placed close to the breast. In this study, we presented a GATE model for the simulation of MAMMI scanner and model its performance of the MAMMI based on an adaptation of the NU 4-2008 NEMA standard. Methods:A detailed of geometry MAMMI system that uses scintillation crystals coupled...
in recent years, the development of neuroimaging techniques such as high-resolution magnetic resonance imaging (mri), functional magnetic resonance imaging (fmri), positron emission tomography (pet), or single photon emission tomography (spect) has promoted the identification of structural and functional characteristics underlying mental disorders to a great extent. in anxiety disorders, recent...
INTRODUCTION Fluorodeoxyglucose positron emission tomography scanning has an established role in the diagnostic work-up of many malignant diseases and also in the evaluation of cancer treatment response. Fluorodeoxyglucose positron emission tomography may, however be non-specific as infectious processes are depicted as well. CASE PRESENTATION We present a patient with longstanding leg pain an...
discussion the reason is that we assess the relative and not absolute differences of the tracer uptake in this imaging modality. there may be other findings on mpi images which could help us overcome this pitfall, including detecting wall motion abnormalities, lung uptake of the tracer, or transient ischemic dilation. another important issue is the ecg changes during exercise stress testing, wh...
background: mesial temporal lobe epilepsy (tle) is a remediable epileptic syndrome. about 40% of patients continue to have seizures after standard temporal lobectomy. it has been suggested that some of these patients could actually suffer from a more complex epileptogenic network. because a few papers have been dedicated to this topic, we decided to write an article updating this theme. methods...
Standard pre-treatment clinical staging (TNM) of head and neck squamous cell carcinoma includes clinical and instrumental objective examination of primary tumour and of the cervical lymph nodes (inspection, palpation of neck, panendoscopy, biopsy of tumour, fine needle aspiration of nodes) and computed tomography or magnetic resonance imaging. Albeit, this procedure presents diagnostic limitati...
We investigated sensitivity, specificity, positive predictive value, negative predictive value and accuracy of 18F-fluorodeoxyglucose-positron emission tomography in 170 cases with suspected or biopsy-proven posttransplant lymphoproliferative disorder. All solid organ and hematopoietic stem cell transplant recipients who underwent an 18F-fluorodeoxyglucose-positron emission tomography scan betw...
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