Paradoxical changes of coronary computed tomography derived fractional flow reserve

Toshimitsu Tsugu; Kaoru Tanaka; Yuji Nagatomo; Dries Belsack; Michel De Maeseneer; Johan De Mey

doi:10.1111/echo.15307

Paradoxical changes of coronary computed tomography derived fractional flow reserve

Echocardiography. 2022 Feb;39(2):398-403. doi: 10.1111/echo.15307. Epub 2022 Jan 23.

Authors

Toshimitsu Tsugu¹, Kaoru Tanaka¹, Yuji Nagatomo², Dries Belsack¹, Michel De Maeseneer¹, Johan De Mey¹

Affiliations

¹ Department of Radiology, Universitair Ziekenhuis Brussel, Brussels, Belgium.
² Department of Cardiology, National Defense Medical College Hospital, Tokorozawa, Japan.

PMID: 35066936
DOI: 10.1111/echo.15307

Abstract

A total of 1335 outpatients with suspected coronary artery disease and who underwent computed tomography derived fractional flow reserve (FFR_CT ) analysis were examined. Only four patients showed reverse increase of FFR_CT from the proximal to the distal vessel and all of them had a large ramus artery (RAM). Of all parameters (vessel length, lumen volume, plaque volume, and left ventricular mass), only the bifurcation angle was significantly higher in reverse increase of FFR_CT with RAM group (106.0 ± 15.8°) than normal FFR_CT with RAM group (82.6 ± 21.7°) and normal FFR_CT without RAM group (66.9 ± 21.1°).

Keywords: FFRCT; bifurcation angle; ramus coronary artery; turbulence.

Publication types

Case Reports

MeSH terms

Computed Tomography Angiography / methods
Coronary Angiography / methods
Coronary Artery Disease* / diagnostic imaging
Coronary Stenosis*
Coronary Vessels / diagnostic imaging
Fractional Flow Reserve, Myocardial*
Humans
Predictive Value of Tests
Severity of Illness Index
Tomography, X-Ray Computed