Segmented slant hole collimator for stationary cardiac SPECT: Monte Carlo simulations
نویسندگان
چکیده
منابع مشابه
Segmented slant hole collimator for stationary cardiac SPECT: Monte Carlo simulations.
PURPOSE This work is a preliminary study of a stationary cardiac SPECT system. The goal of this research is to propose a stationary cardiac SPECT system using segmented slant-hole collimators and to perform computer simulations to test the feasibility. Compared to the rotational SPECT, a stationary system has a benefit of acquiring temporally consistent projections. The most challenging issue i...
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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...
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Introduction: Image quality and accuracy of in vivo activity quantification in SPECT are affected by collimator penetration and scatter components, especially in high energy imaging. These phenomena highly depend on the collimator characteristic and photon energy. The presence of penetrated and scattered photons from collimator in SPECT images degrades spatial resolution, contr...
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The stochastic method used to simulate the stationary transport in semiconductor devices is revised in terms of the numerical Monte Carlo theory. A mathematically based approach has been used to derive the basic simulation algorithms, previously devised from physical considerations. The approach reveals novel properties of the method. It is shown that the method can be interpreted as a regenera...
متن کاملThe evaluation of slant hole collimator in myocardial perfusion SPECT: a simulation study
Introduction: We have investigated cardiac SPECT with slant hole collimator in which the holes are slanted towards the target organ, to provide greater sensitivity over the parallel hole collimator. In addition, parallel hole collimator was used to obtain a comparison in FWHM, sensitivity, Compton and photoelectric area values in the simulations. Materials and Methods...
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ژورنال
عنوان ژورنال: Medical Physics
سال: 2015
ISSN: 0094-2405
DOI: 10.1118/1.4928484