Table 1 Quantitative comparison between the whole-heart coronary MRI acquired with a navigator with a 5 mm gating window (GW), 15 mm GW without correction (noMC), and 15 mm GW with correction (MC) using the proposed algorithm. Higher values of sharpness are superior. All values are reported as mean ± standard deviation, and all statistically significant p values are in bold.
From: Improved data acquisition efficiency for respiratory motion correction in coronary MRI
Parameter | 5mm GW (REF) | 15mm GW without Correction (noMC) | 15mm GW with Correction (MC) | p value (n=10) | ||
|---|---|---|---|---|---|---|
MC vs. REF | noMC vs. REF | MC vs. noMC | ||||
Imaging time (min.) | 14 ± 5 | 7 ± 1 | 7 ± 1 | <0.002 | <0.002 | - |
Scan efficiency (%) | 55 ± 13 | 92 ± 8 | 92 ± 8 | <0.001 | <0.001 | - |
RCA sharpness (mm-1) | 0.51 ± 0.10 | 0.42 ± 0.17 | 0.49 ± 0.13 | 0.692 | 0.151 | 0.298 |
LAD sharpness (mm-1) | 0.37 ± 0.15 | 0.29 ± 0.16 | 0.39 ± 0.04 | 0.683 | 0.271 | 0.079 |
LCX sharpness (mm-1) | 0.33 ± 0.25 | 0.21± 0.19 | 0.38 ± 0.15 | 0.574 | 0.271 | <0.047 |