Key result
Semiautomated RVG wall motion analysis correlates closely with CVG in the apex and posterior wall.
Why the study?
Does regional wall motion analysis by radionuclide ventriculography correlate with contrast ventriculography in patients undergoing both procedures?
Observational (n=18)
Does regional wall motion analysis by radionuclide ventriculography correlate with contrast ventriculography in patients undergoing both procedures?
Measured regional wall motion on LAO RVG compares favorably with near-simultaneous CVG in nonoverlapping portions of the LV, allowing objective quantitation of regional LV performance.
Supports objective regional wall motion assessment by semiautomated LAO RVG in apical and posterior segments; leaves open prospective validation before wider use.
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.
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Steckley et al. (1982) conducted an observational in Left ventricular dysfunction (n=18). Radionuclide ventriculography (RVG) vs. Contrast ventriculography (CVG) was evaluated on Correlation of regional wall motion analysis between RVG and CVG (r = 0.85). Semiautomated regional wall motion analysis on left anterior oblique radionuclide ventriculography correlated closely with contrast ventriculography in the apex and posterior wall (r = 0.85).
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