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Performance of a brain PET camera based on anger-logic gadolinium oxyorthosilicate detectors
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A high-sensitivity, high-resolution brain PET scanner ("G-PET") has been developed. This scanner is similar in geometry to a previous brain scanner developed at the University of Pennsylvania, the HEAD Penn-PET, but the detector technology and electronics have been improved to achieve enhanced performance. Methods: This scanner has a detector ring diameter of 42.0 cm with a patient aperture of 30.0 cm and an axial field of view of 25.6 cm. It comprises a continuous light-guide that couples 18...
Related newspaper, magazine, and journal articles from HighBeam Research
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Fabrication and Characterization of a 0.5-mm Lutetium Oxyorthosilicate Detector Array for High-Resolution PET Applications
The Journal of Nuclear Medicine
; With the increasing use of in vivo imaging in mouse models of disease, there are many interesting applications that demand imaging of organs and tissues with submillimeter resolution. Though there are other contributing factors, the spatial resolution in small-animal PET is still largely determined
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Mid-infrared Microspectroscopy of Difficult Samples Using Near-Field Photothermal Microspectroscopy
Spectroscopy
; The authors discuss progress in near-field IR microspectroscopy using a photothermal probe and show how it can be applied to the spectroscopic characterization of real-world samples. Despite recent advances in Fourier transform-infrared (FT-IR) microspectroscopy and micro-attenuated total
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A Novel Approach to Multipinhole SPECT for Myocardial Perfusion Imaging
The Journal of Nuclear Medicine
; Myocardial perfusion imaging with SPECT remains critically important for diagnosing, assessing, and evaluating treatment of coronary artery disease. However, conventional rotational SPECT suffers from prolonged study times because of relatively low detection efficiency. We therefore have
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Recent Advances in SPECT Imaging
The Journal of Nuclear Medicine
; SPECT is a rapidly changing field, and the past several years have produced new developments in both hardware technology and image-processing algorithms. At the component level there have been improvements in scintillators and photon transducers as well as a greater availability of semiconductor
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Evaluation of Novel Whole-Body High-Resolution Rodent SPECT (Linoview) Based on Direct Acquisition of Linogram Projections
The Journal of Nuclear Medicine
; Studies of the biodistribution of radiolabeled compounds in rodents frequently are performed during the process of development of new pharmaceutical drugs. This article presents the evaluation of a new whole-body animal SPECT system, called the Linoview SPECT system. Methods: Linoview SPECT is
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Quality comparison: CR.(computed radiography )
Medical Imaging
; One of the mainstay technologies of the medical digital imaging digital transformation over the past 15 years has been computed radiography (CR). This technology has, for the most part, taken the place of wet chemistry-based film processors in the projection radiography workflow. With industry
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The effects of transient attention on spatial resolution and the size of the attentional cue
Perception and Psychophysics
; It has been shown that transient attention enhances spatial resolution, but is the effect of transient attention on spatial resolution modulated by the size of the attentional cue? Would a gradual increase in the size of the cue lead to a gradual decrement in spatial resolution? To test these
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NASA EARTH SCIENCE PROGRAM:MICHAEL F. GOODCHILD
Congressional Testimony
; ... researchers, companies, and agencies to produce maps. Images are used to record and assess the ... mapping is not generally available. Base maps made from remotely sensed images are being ... airborne as well as satellite sensors then all maps produced operationally by the U.S. Government ...
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Scintillation Crystal or Semiconductor [gamma]-Probes: An Open Debate/REPLY
The Journal of Nuclear Medicine
; TO THE EDITOR: The invited perspective of Mariani el al. (1) and the article of Classe et al. (2) deal with intraoperativc radioguided surgery, especially in sentinel lymph node detection. Without doubt, the principal characteristics of a high-performance intraoperative γ-probe in terms of
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Optimization of a new scintillation gas detector used to localize electrons emitted by 99mTc
The Journal of Nuclear Medicine
; We have developed a scintillation gas detector to localize electrons emitted by ^sup 99^mTc. This type of detector allows direct quantification of images and so provides a clear advantage over autoradiographic film. We have optimized the device to give an image spatial resolution that closely
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