ESTIMATES OF LEFT-VENTRICULAR VOLUMES BY EQUILIBRIUM RADIONUCLIDE ANGIOGRAPHY - IMPORTANCE OF ATTENUATION CORRECTION

  • 1 January 1984
    • journal article
    • research article
    • Vol. 25  (1) , 14-20
Abstract
To compare the accuracy of attenuated and attenuation-corrected equilibrium radionuclide angiographic (RNA) left ventricular (LV) volume estimates. Consecutive patients (23) were studied with biplane contrast cineangiography (CINE). Attentuated RNA end-diastolic (ED) and end-systolic (ES) volumes were calculated from background-corrected ED and ES counts obtained from hand-drawn regions of interest that were normalized to cardiac cycles processed, frame rate and blood activity. A simple, geometric attenuation correction was performed to obtain attenuation-corrected RNA LV volumes. The attenuated and attenuation-corrected RNA LV EDV estimates correlated with the CINE LV EDV; however, the attenuation-corrected RNA LV EDV estimates correlated more closely. Also, the average attenuation-corrected RNA LV EDV did not differ significantly from the mean CINE LV EDV. Attenuated and attenuation-corrected RNA LV ESV estimates also correlated with the CINE LVES, but the attenuation-corrected RNA LV ESV estimates correlated more closely. Also, the average attenuation-corrected RNA LV ESV did not differ significantly from the mean biplane CINE LV ESV.

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