Analytic and iterative reconstruction algorithms in SPECT

PP Bruyant - Journal of Nuclear Medicine, 2002 - Soc Nuclear Med
Images of the inside of the human body can be obtained noninvasively using tomographic
acquisition and processing techniques. In particular, these techniques are commonly used to …

Correction of the respiratory motion of the heart by tracking of the center of mass of thresholded projections: a simulation study using the dynamic MCAT phantom

PP Bruyant, MA King… - IEEE Transactions on …, 2002 - ieeexplore.ieee.org
During normal breathing, heart motion is about 15 mm along the body axis in humans. We
propose a method to track and to correct this motion after a list-mode acquisition which …

tRNAGlu as a cofactor in δ-aminolevulinate biosynthesis: steps that regulate chlorophyll synthesis

CG Kannangara, SP Gough, P Bruyant… - Trends in biochemical …, 1988 - Elsevier
In plants δ-aminolevulinate is formed from the intact carbon skeleton of glutamate catalysed
by the action of three enzymes. The first step of the pathway is activation of glutamate by …

Streak artifact reduction in filtered backprojection using a level line–based interpolation method

PP Bruyant, J Sau, JJ Mallet - Journal of Nuclear Medicine, 2000 - Soc Nuclear Med
Because of the limited number of projections, the mathematic reconstruction formula of the
filtered backprojection (FBP) algorithm may create an artifact that streaks reconstructed …

Estimation and correction of cardiac respiratory motion in SPECT in the presence of limited‐angle effects due to irregular respiration

…, PH Pretorius, RP Walvick, PP Bruyant… - Medical …, 2010 - Wiley Online Library
Purpose: One issue with amplitude binning list‐mode studies in SPECT for respiratory motion
correction is that variation in the patient's respiratory pattern will result in binned motion …

Feasibility of stereo-infrared tracking to monitor patient motion during cardiac SPECT imaging

…, PH Pretorius, G Boening, PP Bruyant… - IEEE transactions on …, 2004 - ieeexplore.ieee.org
Patient motion during cardiac SPECT imaging can cause diagnostic imaging artifacts. We
investigated the feasibility of monitoring patient motion using the Polaris motion-tracking …

A robust visual tracking system for patient motion detection in SPECT: Hardware solutions

PP Bruyant, MA Gennert, GC Speckert… - IEEE transactions on …, 2005 - ieeexplore.ieee.org
Our overall research goal is to devise a robust method of tracking and compensating patient
motion by combining an emission data based approach with a visual tracking system (VTS) …

Estimation of the rigid-body motion from three-dimensional images using a generalized center-of-mass points approach

B Feng, PP Bruyant, PH Pretorius… - IEEE transactions on …, 2006 - ieeexplore.ieee.org
We present an analytical method for the estimation of rigid-body motion in sets of three-dimensional
(3-D) SPECT and PET slices. This method utilizes mathematically defined …

Numerical observer study of MAP-OSEM regularization methods with anatomical priors for lesion detection in/sup 67/Ga images

PP Bruyant, HC Gifford, G Gindi… - IEEE Transactions on …, 2004 - ieeexplore.ieee.org
With the increasing number of multimodality systems, registered anatomical data is becoming
available for use as patient-specific attenuation maps and anatomical priors in iterative …

An adaptive approach to decomposing patient-motion tracking data acquired during cardiac SPECT imaging

…, H Depold, G Boening, PP Bruyant… - IEEE transactions on …, 2007 - ieeexplore.ieee.org
Patient motion during cardiac SPECT imaging can cause diagnostic imaging artifacts. We
have implemented a Neural Network (NN) approach to decompose monitored patient motion …