نتایج جستجو برای: positron emission tomography pet
تعداد نتایج: 365456 فیلتر نتایج به سال:
A synergy of positron emission tomography (PET)/computed tomography (CT) scanners is the use of the CT data for x-ray-based attenuation correction of the PET emission data. Current methods of measuring transmission use positron sources, gamma-ray sources, or x-ray sources. Each of the types of transmission scans involves different trade-offs of noise versus bias, with positron transmission scan...
The paper presents “A CMOS Delay Lock Loop with Dual Control”. Positron emission tomography (PET) with time-of-flight (TOF) capability has been shown to provide a better reconstructed image compared to conventional positron tomography. Resolution is the biggest problem in PET. To achieve such resolution, time interpolations and multiphase sampling techniques are the mostly used methods. A preci...
AIM Accurate preoperative staging is essential in determining optimal therapeutic procedures and planning for individual patients. Advances in imaging technology have raised interest in the potential role of positron emission tomography-computed tomography (PET-CT) examination for staging of rectal cancer. The primary end point of the study was the correct classification of the tumor node-metas...
A maximum likelihood approach to emission image reconstruction from projections. Maximum likelihood from incomplete data via the EM algorithm. " A theoretical study of some maximum likelihood algorithms for emission and transmission tomography. Attenuation compensation of cone beam SPECT images using maximum likelihood reconstruction. Three-dimensional SPECT reconstruction of combined cone beam...
temporal bone chondroblastoma is an extremely rare benign bone tumor. we encountered two cases showing similar imaging findings on computed tomography (ct), magnetic resonance imaging (mri), and dual-time-point 18f-fluorodeoxyglucose (18f-fdg) positron emission tomography (pet)/ct. in both cases, ct images revealed temporal bone defects and sclerotic changes around the tumor. most parts of the ...
This review is a sequel to our 8 previous reports summarizing the most important published research for singlephoton emission computed tomography (SPECT), cardiac positron emission tomography (PET), cardiac computed tomography (CT), and cardiac magnetic resonance imaging (MRI). This report generally covers the English-language published data between July 1, 2011, and September 30, 2012. We have...
Noninvasive assessment of myocardial perfusion is important in the diagnosis and risk stratification of patients with known or suspected coronary artery disease (CAD). Although single-photon emission computed tomography (SPECT) is most commonly used, multiple modalities including myocardial contrast echocardiography (MCE), positron emission tomography (PET), cardiac MRI (CMR), and cardiac compu...
Klieger C, Dvir R, Even-Sapir E, Lessing JB, Burstein Y, Grisaru D. Integrated F-fluorodeoxyglucose positron emission tomography and computerized tomography in endodermal sinus tumor. Int J Gynecol Cancer 2006;16:1685–1688. Application of an in-line positron emission tomography and computerized tomography (PET-CT) in endodermal sinus tumor (EST) is described in this study. Case 1: A young femal...
Monoclonal antibodies (mAbs) have been approved for use as diagnostics and therapeutics in a broad range of medical indications, but especially in oncology. In addition, hundreds of new mAbs, engineered mAb fragments, and nontraditional antibody-like scaffolds directed against either validated or novel tumor targets are under development. Immuno-positron emission tomography (PET), the tracking ...
Primary malignant melanoma of uterine cervix is extremely rare malignancy with very few case published reports. This neoplasm is having poor prognosis, so early diagnosis, staging and treatment is of extreme importance. 18F-FDG PET-CT (18F-labeled fluoro-2-deoxyglucose positron emission computed tomography) scan is an established modality to determine exact extent of disea...
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