Assessment of left ventricular inferior wall motion activity by gated radionuclide ventriculography may
be limited using the anterior view because of right ventricular interference. This study compared the assessment of
inferior wall motion using the anterior view with the 70° left posterior oblique view in 274 patients in which
electrocardiograms were also available. The anterior view was inadequate for inferior wall evaluation in 34% of the
patients due to right ventricular overlap, while the inferior wall was adequately visualized in all patients using the
70° left posterior oblique view. Of those patients with right ventricular interference, inferior wall motion abnormalities
were noted in 71 % using the 70° left posterior oblique view. Evaluation of electrocardiograms demonstrated
that inferior Q-wave infarctions were more prevalent in patients with right ventricular interference than in patients
with no interference. These results suggest that the 70° left posterior oblique view aids in the evaluation of inferior
wall motion, particularly in patients suspected of inferior infarction or right ventricular disease.
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