Usefulness of Weighted Scatter Window subtraction method when myocardial SPECT
نویسندگان
چکیده
منابع مشابه
Attenuation correction of myocardial SPECT by scatter-photopeak window method in normal subjects.
OBJECTIVE Segmentation with scatter and photopeak window data using attenuation correction (SSPAC) method can provide a patient-specific non-uniform attenuation coefficient map only by using photopeak and scatter images without X-ray computed tomography (CT). The purpose of this study is to evaluate the performance of attenuation correction (AC) by the SSPAC method on normal myocardial perfusio...
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Small field of view detectors based on Position Sensitive Photomultiplier Tubes (PSPMTs) have been widely used by many research groups in small-animal imaging and recently clinically in scintimammography. In most cases the PSPMT is coupled to pixelized scintillators since it has been shown that their use improves spatial resolution. The use of a single energy window for each crystal element is ...
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Accuracy and limitation of energy-window based scatter correction techniques have been evaluated for myocardial 201Tl SPECT by means of Monte Carlo simulation. In particular, projection view-dependency of energy distribution of the scattered photons was evaluated. Two geometrical configurations were simulated: namely a homogeneous cylindrical radioactivity located asymmetrically in a homogeneou...
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Radionuclide imaging has the potential to be used in quantitative analysis of the regional function of organs. However, quantification of SPECT images is degraded by many factors such as Compton photon scattering. This could have a destructive effect on clinical reports so it is important to do scatter correction to get better quality SPECT images. We intended to determine how scatter correctio...
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SPECT is a tomography technique that can greatly show information about the metabolic activity in the body and improve the clinical diagnosis. In this paper, a convolution subtraction technique is proposed for scatter compensation in SPECT imaging. In simulation with Gate, 128 projections were simulated evenly spaced over 360° by a circular orbit, each with 128 bins. Simulation results show tha...
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ژورنال
عنوان ژورنال: Japanese Journal of Radiological Technology
سال: 1997
ISSN: 0369-4305,1881-4883
DOI: 10.6009/jjrt.kj00001356065