The potential of phase and amplitude images in determining the boundary of the left ventricle

• Published in: Physics in medicine & biology Vol. 29; no. 11; pp. 1377 - 1384
• Main Authors: Jackson, P C, Fraser, J R, Wolinski, A P, Wilde, R P H
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.11.1984; Institute of Physics
• Subjects: Adult; Aged; Biological and medical sciences; Erythrocytes; Female; Heart Diseases - diagnostic imaging; Heart Ventricles - diagnostic imaging; Humans; Investigative techniques, diagnostic techniques (general aspects); Male; Medical sciences; Middle Aged; Miscellaneous. Technology; Radiography; Radionuclide Imaging; Radionuclide investigations; Sodium Pertechnetate Tc 99m; Stroke Volume; Amplitude; Radionuclide study; Nuclear medicine; Ventriculography; Ventricular ejection; Phase analysis; Image; Calculating method; Left ventricle; Ejection fraction
• ISSN: 0031-9155; 1361-6560
• DOI: 10.1088/0031-9155/29/11/006

The phase and amplitude images derived from multiple gated blood pool studies of the heart have been used to aid the delineation of the boundary of the left ventricle. The results of left ventricular ejection fraction (LVEF) using this method have been compared with those obtained using edge detection algorithms, dual region of interest techniques, and x-ray contrast ventriculography, in a series of patients with well documented left ventricular wall motion. The results indicate that the sole use of phase and amplitude images does not improve the correlation or accuracy of LVEF estimation in relation to those obtained by x-ray contrast ventriculography, and that the dual region of interest technique is likely to remain the preferred method.