نتایج جستجو برای: coincidence imaging
تعداد نتایج: 466798 فیلتر نتایج به سال:
Abstract Cascade nuclides emit two or more gamma rays successively through an intermediate state. The coincidence detection of cascade provides several advantages in gamma-ray imaging. In this review article, three applications the double photon method are reviewed. Double-photon emission imaging with mechanical collimators and Compton double-photon can identify radioactive source positions the...
The purpose of this study was to evaluate the performance of 18F-fluorodeoxyglucose (18FDG) imaging via coincidence detection emission tomography (CDET) in identifying malignant lesions in subjects exposed to asbestos. A total of 30 patients exposed to asbestos underwent 18FDG-CDET between January 2000 and June 2003. A CDET scan of the thorax and abdomen was performed 60 min after injection of ...
The vacuum ultraviolet (VUV) beamline of the Swiss Light Source has been upgraded after two years of operation. A new, turntable-type monochromator was constructed at the Paul Scherrer Institut, which allows for fast yaw-alignment as well as quick grating change and exchange. In addition to the original imaging photoelectron photoion coincidence endstation (iPEPICO), a second, complementary dou...
The aim of this paper is to present some coincidence point results for four mappings satisfying generalized ðw;uÞ-weakly contractive condition in the framework of ordered b-metric spaces. An example and an application are also provided to support our results. 2013 Elsevier Inc. All rights reserved.
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