Table 1.
LV ventricular analysis: manual, semi-automated and fully-automated analysis of LV parameters comparing measurements before and after administration of contrast agent
| Technique of analysis | Pre-contrast | Post-contrast | p (<0.05) |
| Manual | |||
| LVEDV (ml) | 130.8 ± 31.0 | 131.7 ± 29.8 | 0.54 |
| LVESV (ml) | 54.1 ± 20.1 | 57.0 ± 17.9 | 0.04 |
| LVSV (ml) | 76.6 ± 19.6 | 74.8 ± 18.8 | 0.17 |
| LVEF (%) | 59.0 ± 9.5 | 57.0 ± 8.1 | 0.02 |
| LVM (g) | 105.4 ± 28.6 | 106.7 ± 25.6 | 0.38 |
| Semi-automated | |||
| LVEDV (ml) | 126.4 ± 31.4a | 129.2 ± 31.0a | 0.06 |
| LVESV (ml) | 48.3 ± 19.9a | 52.6 ± 20.8a | <0.001 |
| LVSV (ml) | 78.0 ± 19.7 | 76.6 ± 18.3 | 0.15 |
| LVEF (%) | 62.1 ± 9.6a | 59.8 ± 9.5a | <0.001 |
| LVM (g) | 109.1 ± 27.3a | 108.6 ± 26.2 | 0.69 |
| Fully automated | |||
| LVEDV (ml) | 117.2 ± 32.13a | 127.41 ± 31.4a | <0.001 |
| LVESV (ml) | 62.4 ± 21.8a | 69.5 ± 26.1a | <0.001 |
| LVSV (ml) | 54.8 ± 18.8a | 57.9 ± 17.6a | 0.21 |
| LVEF (%) | 46.9 ± 10.9a | 45.9 ± 12.4a | 0.49 |
| LVM (g) | 110.6 ± 23.8a | 105.4 ± 25.2 | 0.03 |
aSignificant differences found in software-based volumetric analysis when compared with manual analysis (Supplementary Material 1, Supplementary material available online). Student’s t-test with significance level of <0.05. Pre- and post-contrast refers to the absence and presence of contrast agent respectively. LV, left ventricular; LVEDV, left ventricular end-diastolic volume; LVESV, left ventricular end-systolic volume; LVSV, left ventricular stroke volume; LVEF, left ventricular ejection fraction; LVM, left ventricular mass.