Quantification in cardiovascular magnetic resonance: agreement of software from three different vendors on assessment of left ventricular function, 2D flow and parametric mapping

Table 3 Intraobserver variability for software A, B and C

	Software A	Software B	Software C
Left ventricular assessment
Ejection Fraction [%]	−0.2 ± 2.4	−0.5 ± 2.7	0.5 ± 1.6
Mass [g]	2.9 ± 6.8	− 3.4 ± 5.0	− 1.3 ± 3.4
End-diastolic volume [ml]	1.9 ± 5.0	0.6 ± 5.5	− 0.1 ± 3.4
End-systolic volume [ml]	0.6 ± 3.7	0.6 ± 2.9	0.3 ± 2.3
2D Flow measurement
Vmax [cm/s]	0.0 ± 0.0	0.0 ± 0.1	0.0 ± 0.0
Stroke Volume [ml]	−1.0 ± 2.1	−1.2 ± 2.3	0.0 ± 1.6
Parametric mapping
T1-time [ms]	−9.4 ± 9.0	−4.0 ± 12.5	−0.6 ± 12.2
T2-time [ms]	− 0.4 ± 0.9	−0.1 ± 1.6	−0.1 ± 1.1

Intraobserver variability expressed as mean bias ± standard deviation. The greatest standard deviation among the three software is indicated in bold
EF ejection fraction, EDV end-diastolic volume, ESV end-systolic volume, Vmax peak velocity, SV stroke volume

ISSN: 1532-429X