Radionuclide ventriculography: evaluation of automated and visual methods for regional wall motion analysis
Journal Article
·
· Radiology; (United States)
Regional wall motion (RWM) abnormalities are sensitive indicators of left ventricular (LV) dysfunction, but quantitation of RWM with gated radionuclide ventriculography (RVG) has been limited, particularly in the left anterior oblique (LAO) projection. Regional LV performance was studied in 18 patients undergoing LAO RVG immediately prior to contrast ventriculography (CVG). Wall motion was analyzed by semiautomated and visual methods using several coordinate systems. For semiautomated methods, RVG and CVG wall motion were closely related in the two 90 degrees polar sectors at the apex and posterior wall (r . .85) and in the five 45 degrees polar sectors from midseptum through posterior wall (r . .82). The basal sectors on RVG had weak relationship to CVG, due to adjacent vascular structures. Semiautomated and visual grades for polar sectors on both CVG and RVG were closely related (r . .88- .94). Measured regional wall motion on LAO RVG compared favorably with near-simultaneous CVG in nonoverlapping portions of the LV and allowed objective quantitation of regional LV performance.
- Research Organization:
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN
- OSTI ID:
- 5405006
- Journal Information:
- Radiology; (United States), Journal Name: Radiology; (United States) Vol. 142:1; ISSN RADLA
- Country of Publication:
- United States
- Language:
- English
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