End-expiration respiratory gating for a high-resolution stationary cardiac SPECT system
نویسندگان
چکیده
منابع مشابه
High-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...
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A Macintosh-based signal processing system has been developed to support simultaneous respiratory and cardiac gating on the ECAT EXACT HR PET scanner. Using the LabView real-time software environment, the system reads analog inputs from a pneumatic respiratory bellows and an ECG monitor to compute an appropriate histogram memory location for the PET data. Respiratory state is determined by the ...
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UNLABELLED A dedicated stationary cardiac single-photon emission computed tomography (SPECT) system with a novel segmented slant-hole collimator has been developed. The goal of this paper is to calibrate this new imaging geometry with a point source. METHODS Unlike the commercially available dedicated cardiac SPECT systems, which are specialized and can be used only to image the heart, our pr...
متن کاملResolution-recovery-embedded image reconstruction for a high-resolution animal SPECT system.
The small-animal High-Resolution SPECT (HiReSPECT) is a dedicated dual-head gamma camera recently designed and developed in our laboratory for imaging of murine models. Each detector is composed of an array of 1.2 × 1.2 mm(2) (pitch) pixelated CsI(Na) crystals. Two position-sensitive photomultiplier tubes (H8500) are coupled to each head's crystal. In this paper, we report on a resolution-recov...
متن کاملQuantitative analysis of acute myocardial infarct in rat hearts with ischemia-reperfusion using a high-resolution stationary SPECT system.
UNLABELLED The purpose of this study was to develop an in vivo imaging protocol for a high-resolution stationary SPECT system, called FASTSPECT, in a rat heart model of ischemia-reperfusion (IR) and to compare 99mTc-sestamibi imaging and triphenyltetrazolium chloride (TTC) staining for reliability and accuracy in the measurement of myocardial infarcts. METHODS FASTSPECT consists of 24 modular...
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ژورنال
عنوان ژورنال: Physics in Medicine and Biology
سال: 2014
ISSN: 0031-9155,1361-6560
DOI: 10.1088/0031-9155/59/20/6267