Phase analysis of radionuclide ventriculograms in patients with coronary artery disease

Area of Science:

• Cardiology
• Nuclear Medicine
• Medical Imaging

Background:

• Coronary artery disease (CAD) can impair left ventricular function, leading to segmental wall motion abnormalities.
• Radionuclide ventriculography is a common imaging technique for assessing cardiac function.

Purpose of the Study:

• To evaluate the utility of phase analysis of radionuclide ventriculograms in detecting segmental wall motion abnormalities in patients with coronary artery disease (CAD).

Main Methods:

• Phase analysis was performed on radionuclide ventriculograms from 80 patients with CAD and 16 healthy controls.
• Phase images and histograms were analyzed to assess patterns of contraction and identify abnormalities.

Main Results:

• Normal subjects showed homogeneous phase patterns and narrow histograms.
• In CAD patients, abnormal phase images and broad, multi-peaked histograms correlated with hypokinetic, akinetic, and dyskinetic segments.
• Phase analysis detected abnormalities in 26/41 patients with hypokinesis, all 18 with akinesis, and all 6 with dyskinesis.

Conclusions:

• Phase image analysis is a valuable tool for identifying and characterizing segmental wall motion abnormalities in patients with CAD.
• The technique demonstrates high sensitivity in detecting various degrees of left ventricular dysfunction.
• Phase analysis provides objective data that complements visual interpretation of ventriculograms.