Assessment of the site of ventricular activation by Fourier analysis of gated blood-pool studies

J. M. Links, J. S. Raichlen, H. N. Wagner, P. R. Reid

Research output: Contribution to journalArticlepeer-review

Abstract

We studied the use of first-harmonic Fourier analysis of gated blood-pool images to assess the site of ventricular activation in a group of 12 patients undergoing electrophysioslogic pacing studies. We acquired gated blood-pool studies during pacing at up to four sites at each of two different rates. A total of 50 studies were made. At a pacing rate of 100 beats/min, when the pacing electrode was at the right-ventricular apex, 9/13 times the Fourier activation site agreed; at the right-ventricular outflow tract, 7/8; at the anterolateral left-ventricular wall, 4/4. When the Fourier activation site was at the right-ventricular apex, 9/9 times the pacing electrode was there; at the right-ventricular outflow tract, 7/10; in the left ventricle, 4/4. Fourier analysis of gated blood-pool studies can help identify the site of ventricular activation but is not sufficiently accurate to fully replace endocardial mapping.

Original languageEnglish (US)
Pages (from-to)27-32
Number of pages6
JournalJournal of Nuclear Medicine
Volume26
Issue number1
StatePublished - Jan 1 1985

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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