A versatile mathematical simulation of a beating left ventricle, as seen in a gated cardiac
blood-pool study, is described. The basic model consists of a fifth-degree polynomial rotated …

The authors describe a digital filter that greatly enhances the quality of gated cardiac blood-
pool images. Spatial filtering is accomplished with a minimum-mean-square-error (Wiener) …

Measurement and visualization of cardiac func-tion, particularly the function of the left
ventricle (LV) of the heart, has proven to be a powerful tool for detecting and assessing heart …

Methods: The mathematical cardiac torso phantom, developed to study LV myocardium
perfusion, was modified to simulate the radioactivity distribution of a" Tc-gated blood-pool …

The authors discuss an objective method of analyzing local wall motion to detect and
measure the pattern of contraction of the left ventricle using computer graphics. The …

The traditional validation of a multiple-gated acquisition system requires complex correlation
of radionuclide and contrast ventriculography. Once completed, it is important that the …

A dynamic heart phantom for the quality control of tomographic systems used in nuclear
cardiology imaging was developed, built, and tested. The heart phantom anatomically …

To investigate how changes in the mechanical characteristics of the myocardium caused by
cardiac diseases affect ventricular wall motion, a new computer program to simulate wall …

Describes briefly the structure and application of a dynamic phantom which simulates
cardiac action in a manner that is more general in concept than is the case for phantoms …

Dynamic cardiac phantoms and radionuclide imaging were used to obtain ejection fraction
(EF) and left ventricular (LV) volume measurements. Tc-99m pertechnetate and water …