Methods: Monte Carlo simulationsand real acquisitionof a" mTc cardiac phantom were
performed under comparable conditions. Simulated and acquired data were reconstructed …

The authors evaluated cone beam single-photon emission-computed tomography (SPECT)
of the heart. A new cone beam reconstruction algorithm was used to reconstruct data …

Cardiac SPECT images are degraded by photons scattered in the thorax. Accurate
correction for scatter is complicated by the nonuniform density and varied sizes of thoraxes …

Clinicians now rely heavily on the results of single-photon emission computed tomography
(SPECT) myocardial perfusion imaging for diagnosing coronary disease and for planning …

SPECT systems are often used to show the distribution of a radioactive Substance inside a
patient's body. A source of penetrating radiation is administered to the patient, which …

A quantitative study of nonisotropic attenuation in SPECT imaging is presented. The study
includes a case where the spatial distribution of the attenuation coefficient is nonuniform, as …

Iterative reconstruction algorithms with markedly different convergence rates have been
proposed in single-photon emission computed tomography (SPECT). Several new iterative …

A comparison of two methods of scatter compensation in single photon emission computed
tomography (SPECT) imaging is made on the basis of improvements in quantification. The …

In clinical cardiac single-photon emission tomography (SPET) studies, collimators of
different spatial resolution and geometric efficiency are available for imaging. In selecting …

METhODS Data SImulation The cardiac data simulation method has been previouslyde
scribed (23), and an overview is presented here. The projections of simulated three …