Comparison of histologically identified plaque components in hyper- and hypointense areas on QSM imagesa
| Plaque Components | Hyperintense Area (n = 26) | Hypointense Area (n = 9) | P Value |
|---|---|---|---|
| Intraplaque hemorrhage | 19 (73) | 0 (0) | .0002 |
| Iron deposition | 20 (76.9) | 0 (0) | <.0001 |
| Calcification | 7 (26.9) | 8 (88.9) | .002 |
| Fibrous matrix deposits | 9 (34.6) | 9 (100) | .001 |
| Dense inflammatory infiltrates | 10 (38.5) | 4 (44.4) | 1.0 |
| Necrotic core without intraplaque hemorrhage | 5 (19.2) | 1 (11.1) | 1.0 |
↵a Data in parentheses are percentages.