Table 2:
General plaque characteristics by MRI-derived AHA lesion type
| MRI-AHA Lesion Type | Maximum Wall Thickness | Maximum Soft Plaque Thickness | Maximum Hard Plaque Thickness | Minimum Density | Maximum Density | Mean Density | NASCET Percentage Stenosis |
|---|---|---|---|---|---|---|---|
| I-II | 2.2 ± 0.6 | 1.8 ± 0.6 | 1.4 ± 0.8 | 38 ± NAa | 197 ± NAa | 82 ± NAa | 0.0% ± NAa |
| III | 3.7 ± 0.5 | 1.8 ± 0.8 | 3.0 ± 0.5 | 41 ± 18 | 224 ± 68 | 114 ± 29 | 15.1% ± 12.5% |
| IV-V | 4.0 ± 0.3 | 2.9 ± 0.5 | 2.4 ± 0.5 | 14 ± 10 | 134 ± 21 | 59 ± 12 | 21.1% ± 8.0% |
| VI | 5.3 ± 0.4 | 4.7 ± 0.5 | 2.5 ± 0.5 | 18 ± 9 | 143 ± 18 | 60 ± 12 | 46.3% ± 10.6% |
| VII | 4.4 ± 0.7 | 1.1 ± 0.5 | 3.9 ± 0.5 | 31 ± 8 | 215 ± 33 | 91 ± 11 | 33.1% ± 14.0% |
| Total | 4.2 ± 0.3 | 2.8 ± 0.4 | 2.7 ± 0.3 | 20 ± 6 | 152 ± 17 | 67 ± 9 | 26.7% ± 5.6% |
Note:—Thickness is given in millimeters; density of the soft plaque component in Hounsfield units (HU) ±CI. AHA indicates American Heart Association.
a
Only 1 HU measurement was obtained for AHA lesion type I/II, therefore no CIs are reported.