John R. Lesser (2018) One the Cover. Journal of the Minneapolis Heart Institute Foundation: Spring/Summer 2018, Vol. 2, No. 1, pp. 1-1.
John R. Lesser, MD
Minneapolis Heart Institute Foundation
The cover image is a fractional flow reserve CT (FFR-CT) result obtained for the patient in our case report. The coronary anatomy is derived from a coronary CT angiogram (CCTA). The CCTA was obtained using usual clinical techniques. Digital images were then transferred to a supercomputer where millions of simulated flow equations using computational fluid dynamic techniques were applied to the CT coronary anatomy. Simulated maximal vasodilator stress was also applied allowing coronary pressure to be estimated in any location along the coronary tree. These estimates are highly correlated with invasive FFR, the current standard for measuring the importance of a coronary stenosis. We send for an FFR-CT on a provisional basis when the anatomic image from the CCTA identifies a stenosis that does not clearly limit blood flow to the heart. The technique is very accurate and allows better patient selection for invasive angiography and percutaneous intervention. See the article by Lesser et al, this issue.