PT  - JOURNAL ARTICLE
AU  - Jonathan M. Links
AU  - Joel S. Raichlen
AU  - Henry N. Wagner, Jr.
AU  - Philip R. Reid
TI  - Assessment of the Site of Ventricular Activation by Fourier Analysis of Gated Blood-Pool Studies
DP  - 1985 Jan 01
TA  - Journal of Nuclear Medicine
PG  - 27--32
VI  - 26
IP  - 1
4099  - http://jnm.snmjournals.org/content/26/1/27.short
4100  - http://jnm.snmjournals.org/content/26/1/27.full
SO  - J Nucl Med1985 Jan 01; 26
AB  - 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 electrophysiologic 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.