Methods: Acquisitionsof phantoms with nonuniformand uniform attenuation were performed
using STE and conventional ap proaches, in the absence and presence of extracardiac …

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

transmission projections, producing un acceptable bias and variance in the attenuation map
(19); and inconsistent reference scan normalization that can occur between the frames of an …

Effects of Misalignment Between Transmission and Page 1 Effects of Misalignment Between
Transmission and Emission Scans on Attenuation—Corrected Cardiac SPECT Ichiro …

The accuracy of myocardial perfusion SPECT improves with attenuation correction.
Algorithms for attenuation correction in hybrid SPECT/CT systems have the potential for …

Single photon emission computed tomography (SPECT) myocardial perfusion imaging has
attained widespread clinical acceptance as a standard of care for cardiac patients. Yet …

Purpose: In gated cardiac single photon emission computed tomography (SPECT), image
reconstruction is often hampered by various degrading factors including depth‐dependent …

Patient anatomy has complicated effects on cardiac SPECT images. The authors
investigated reconstruction methods which substantially reduced these effects for improved …

There is increasing concern about radiation exposure from myocardial perfusion SPECT
(MPS). γ-cameras with solid-state cadmium-zinc-telluride (CZT) detectors have better count …

Background We investigated the effect of the respiratory motion on attenuation-corrected
(AC) SPECT images for three different SPECT systems, each using a different approach in …