FBPto1. 01±0.07. Basalattenuationappearedproperlycorn pensatedas the peakbasal-to-
apicalslice activitygradientalong the posterior-inferiorwallchangedfrom1. 15 ±0.12 forFBPto …

This study compared attenuation compensated, myocardial SPECT ¡ magesreconstructed
from 180Âand 360Âdata to determine ifeither data acquisition method might yield improved …

Background Image artifacts caused by nonuniform photon attenuation are a source of error
in interpretation of images during myocardial perfusion single photon emission computed …

P@(x, y, 0). For the purposeof thiswork, f@(x, y, 0) andf@(x, y, 0) will be used to quantify the
relative contamination rates between the transmission windows of@ Amand@ Tcwith the …

Data Acquisition To determine the correction factors and evaluate the tech nique, both
phantom and patient studies were performed. Data were acquired using a GE 400 AC/T …

For some camera systems used in cardiac SPECT, the limited field of view of fanbeam-
collimated detectors produces truncation in the projection data. This truncation may …

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

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

The most seriouscontroversyregardingthe applicationof transaxialSPECTtechnologyto
201fl@@ onimaging is the ch@ ce between 3600@ with 180Âdata samplingtechniques …

Background We developed a cardiac SPECT system (X-ACT) with low dose volume CT
transmission-based attenuation correction (AC). Three solid-state detectors are configured …