[图书][B] Development and application of the new dynamic NURBS-based cardiac-torso (NCAT) phantom

WP Segars - 2001 - search.proquest.com
Simulation is a powerful tool for characterizing, evaluating, and optimizing medical imaging
systems. An important aspect of simulation is to have a realistic phantom or model of the …

MCAT to XCAT: The evolution of 4-D computerized phantoms for imaging research

WP Segars, BMW Tsui - Proceedings of the IEEE, 2009 - ieeexplore.ieee.org
Recent work in the development of computerized phantoms has focused on the creation of
ideal ldquohybridrdquo models that seek to combine the realism of a patient-based …

A mathematical model of motion of the heart for use in generating source and attenuation maps for simulating emission imaging

PH Pretorius, MA King, BMW Tsui, KJ LaCroix… - Medical …, 1999 - Wiley Online Library
This manuscript documents the alteration of the heart model of the three‐dimensional (3D)
mathematical cardiac torso (MCAT) phantom to represent cardiac motion. The objective of …

Normal and pathological NCAT image and phantom data based on physiologically realistic left ventricle finite-element models

AI Veress, WP Segars, JA Weiss… - IEEE transactions on …, 2006 - ieeexplore.ieee.org
The four-dimensional (4-D) NURBS-based cardiac-torso (NCAT) phantom, which provides a
realistic model of the normal human anatomy and cardiac and respiratory motions, is used in …

Improved dynamic cardiac phantom based on 4D NURBS and tagged MRI

WP Segars, DS Lalush, EC Frey… - IEEE transactions on …, 2009 - ieeexplore.ieee.org
We previously developed a realistic phantom for the cardiac motion for use in medical
imaging research. The phantom was based upon a gated magnetic resonance imaging …

The MCAT, NCAT, XCAT, and MOBY computational human and mouse phantoms

WP Segars, BMW Tsui - Handbook of Anatomical Models for …, 2009 - api.taylorfrancis.com
In addition to the field of radiation dosimetry, computerized phantoms are also used in
simulation studies to evaluate and improve medical imaging devices and techniques …

[HTML][HTML] Cascaded MRI-SPAMM for LV motion analysis during a whole cardiac cycle

J Park, DN Metaxas, L Axel, Q Yuan, AS Blom - International journal of …, 1999 - Elsevier
We present a new paradigm which incorporates multiple sets of tagged MRI data (MRI-
SPAMM) acquired in a cascaded fashion in order to estimate the full 3-D motion of the left …

Strain analysis and visualization: left ventricle of a heart

J Park, S Park - Computers & Graphics, 2000 - Elsevier
Clinical utility of computational models is crucial in the applications of medical data
visualization. Previously we have developed a new class of volumetric models whose …

Quantitative study of cardiac motion estimation and abnormality classification in emission computed tomography

J Tang, WP Segars, TS Lee, X He, A Rahmim… - Medical engineering & …, 2011 - Elsevier
Quantitative description of cardiac motion is desirable to assist in detecting myocardial
abnormalities from gated myocardial perfusion (GMP) emission computed tomography …

Effect of heart rate on CT angiography using the enhanced cardiac model of the 4D NCAT

WP Segars, K Taguchi, GSK Fung… - … 2006: Physics of …, 2006 - spiedigitallibrary.org
We investigate the effect of heart rate on the quality and artifact generation in coronary artery
images obtained using multi-slice computed tomography (MSCT) with the purpose of finding …