منابع مشابه
Ultra-high-resolution small- animal SPECT imaging
Today the majority of clinical molecular imaging procedures are carried out with single photon emitters and gamma cameras, in planar mode and Single Photon Emission Computed Tomography (SPECT) mode. Thanks to the development of advanced multi-pinhole collimation technologies, SPECT imaging of small experimental animals is rapidly gaining in popularity. Whereas resolutions in routine clinical SP...
متن کاملHigh-efficiency, high-resolution SPECT techniques for cardiac imaging
Current standard clinical SPECT techniques provide a resolution of at best 1 cm and sensitivity in the order of 10. Performance is largely determined by the collimator. Basic geometry couples resolution and sensitivity; the problem of high-resolution imaging is a formidable one because, to image at constant Signal-to-Noise, resolution improvements must be supported by simultaneous sensitivity i...
متن کاملHigh resolution reconstruction for 3D SPECT
In this work, we have developed a new method for SPECT (single photon emission computed tomography) image reconstruction, which has shown the potential to provide higher resolution results than any other conventional methods using the same projection data. Unlike the conventional FBP(filtered backprojection) and EM(expectation maximization) type algorithms, we utilize as much system response in...
متن کاملA clinical gamma camera-based pinhole collimated system for high resolution small animal SPECT imaging.
The main objective of the present study was to upgrade a clinical gamma camera to obtain high resolution tomographic images of small animal organs. The system is based on a clinical gamma camera to which we have adapted a special-purpose pinhole collimator and a device for positioning and rotating the target based on a computer-controlled step motor. We developed a software tool to reconstruct ...
متن کاملU-SPECT-II: An Ultra-High-Resolution Device for Molecular Small-Animal Imaging.
UNLABELLED We present a new rodent SPECT system (U-SPECT-II) that enables molecular imaging of murine organs down to resolutions of less than half a millimeter and high-resolution total-body imaging. METHODS The U-SPECT-II is based on a triangular stationary detector set-up, an XYZ stage that moves the animal during scanning, and interchangeable cylindric collimators (each containing 75 pinho...
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ژورنال
عنوان ژورنال: IEEE Transactions on Nuclear Science
سال: 2014
ISSN: 0018-9499,1558-1578
DOI: 10.1109/tns.2014.2304853