Prerequisite for projection data and reconstruction not to cause truncation artifacts in myocardial perfusion single-photon emission computed tomography: Phantom study

appropriateness of referrals for single-photon emission computed tomography myocardial perfusion imaging (spect-mpi) in iran

abstract is not available

LABORATORY INVESTIGATION SINGLE-PHOTON EMISSION TOMOGRAPHY Quantitation of size of relative myocardial perfusion defect by single-photon emission computed tomography

The purpose of this study was to validate a semiautomatic method for quantitating the size of relative myocardial perfusion defects from single-photon emission computed tomographic (SPECT) images. We compared the size of the image defect in vivo, expressed as percent of involved left ventricle, as determined by this method with the anatomic size of the defect in vitro in 19 dogs. To test the me...

Utilization of an optimum low-pass filter during filtered back-projection in the reconstruction of single photon emission computed tomography images of small structures

Introduction:Low-pass filters eliminate noise, and accordingly improve the quality of filtered back-projection (FBP) in the reconstruction of single photon emission computed tomography (SPECT) images. This study aimed at selection of an optimum low-pass filter for FBP reconstruction of SPECT images of small structures. Material and Methods:Sp...

Time-varying reconstruction in single photon emission computed tomography

We propose a new method for reconstruction of images in single photon emission computed tomography (SPECT), when the activity distribution of the object is time-varying. The activity evolution is modeled with the first-order Markov model, and linear observation model is used to characterize the measurement system. The state-space representation of the measurement sequence reduces to an ill-cond...

Single Photon Emission Computed Tomography