. Author manuscript; available in PMC: 2013 Jun 1.

Published in final edited form as: J Magn Reson Imaging. 2012 Jan 13;35(6):1338–1348. doi: 10.1002/jmri.23577

Table 1.

LV functional data and Doppler flow estimates under various grades of LCX stenosis. Values are reported as mean ± standard deviation.

	Stress No stenosis	Moderate Stenosis	Critical Stenosis
Doppler flow change from rest (%)^*	68.2 ± 19.4	−20.4 ± 25.1	−77.1 ± 8.7
Ejection Fraction (%)^†	50.5 ±6.2	45±6.8	33.6±4.16

calculated as X-A/A, where A is Doppler flow at rest, and X is Doppler flow under stress

^†

calculated as V_ED-V_ES/V_ED, where V_ES is the blood volume in end-systole and V_ED is the blood volume in end-diastole