Evaluation of a EMCCD Detector for Emission-Transmission Computed Tomography
نویسندگان
چکیده
منابع مشابه
Description of a prototype emission-transmission computed tomography imaging system.
We have developed a prototype imaging system that can perform simultaneous x-ray transmission CT and SPECT phantom studies. This system employs a 23-element high-purity-germanium detector array. The detector array is coupled to a collimator with septa angled toward the focal spot of an x-ray tube. During image acquisition, the x-ray fan beam and the detector array move synchronously along an ar...
متن کاملComparison between emission and transmission computed tomography of the liver.
Emission computed tomography (emission CT) and conventional planar gamma-camera imaging of the liver were compared in 242 patients with suspected metastatic spread to liver. Concordant data were obtained in 171 patients (71%). Single large lesions, multiple small lesions, and diffuse disease were accurately defined with this new radionuclide tomographic technique. The smallest lesion detected b...
متن کاملA Comparative Study of the Construction of Positron Emission Tomography/Computed Tomography Facilities in Three South African Hospitals
Introduction: Development of higher energy modalities such as positron emission tomography/computed tomography (PET/CT), has led to more complex shielding problems. This is due to several factors, such as the radiopharmaceutical relatively high-administered activity, high patient throughput, and high energies of 511 kilo-electron volt (keV) positron annihilation photon...
متن کاملPositron emission tomography/computed tomography: a clinical tool for evaluation of enthesitis in patients with spondyloarthritides.
OBJECTIVE To evaluate the accuracy of PET/CT using [(18)F]fluorodeoxyglucose (FDG) in determining the presence of enthesitis in patients with SpAs. METHODS Results of PET/CT scans of eight patients with SpA and seven patients with RA were retrospectively examined, with specific focus on five joints and three entheses. Volume fixation values are expressed as standardized uptake values (SUVs). ...
متن کاملHigh-definition multidetector computed tomography for evaluation of coronary artery stents: comparison to standard-definition 64-detector row computed tomography.
BACKGROUND The assessment of coronary stents with present-generation 64-detector row computed tomography scanners that use filtered backprojection and operating at standard definition of 0.5-0.75 mm (standard definition, SDCT) is limited by imaging artifacts and noise. OBJECTIVES We evaluated the performance of a novel, high-definition 64-slice CT scanner (HDCT), with improved spatial resolut...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Nuclear Science
سال: 2006
ISSN: 0018-9499
DOI: 10.1109/tns.2006.882798