RATIONALE AND OBJECTIVES: To evaluate thin-section computed tomography (CT)
images of the lung reconstructed using adaptive statistical iterative reconstruction (ASIR) on …

Attenuation, photon scatter, and distance-dependent collimator-detector response are major
degrading factors in myocardial SPECT images. The current study investigated whether …

Data acquisition for the case of ideal SPECT imaging is illustrated in Figure 1, which
portrays a single-headed gamma camera imaging a source distribution f (x, y) at a rotation …

Purpose: To compare two methods of reconstructing technetium 99m (99mTc)
dimercaptosuccinic acid (DMSA) renal single photon emission computed tomographic …

Purpose To characterize ordered-subset expectation maximization algorithm with a fixed 3D
Gauss post-reconstruction filtering (OSEM) in 99m Tc SPECT as for noise, contrast and …

A small detector or limited gantry rotation angles may cause data truncation, in which case
the entire object cannot be completely reconstructed. However, a small region of interest …

In PET image reconstruction, regularization is often needed to reduce the noise in the
resulting images. Patch-based image processing techniques have recently been …

In X-ray computed tomography (CT) iterative methods are more suitable for the
reconstruction of images with high contrast and precision in noisy conditions from a small …

Localization ROC (LROC) observer studies examined whether detector response
compensation (DRC) in ordered-subset, expectation-maximization (OSEM) reconstructions …

67Ga citrate is an oncologic SPECT imaging agent often used to diagnose or stage patients
with non-Hodgkin's lymphoma. As 67Ga decay involves the emission of multiple-energy γ …