Patient demographics and findings
| Case No. | Aneurysm No. | Patients | Aneurysms | Aneurysm Wall Findings at HOP-MRA | Atherosclerotic Risk Factors | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sex | Age (yr) | Location | Maximum Size (mm) | Intraoperative Plaque Findingsa | High Signal Intensity | WVCRb | HT | DL | DM | CS | ||
| 1 | 1 | M | 24 | ICA Ach | 4.2 | A | + | 0.73 | + | − | − | − |
| 2 | 2 | M | 35 | ACA (A1) | 2.8 | C | − | −0.02 | + | − | − | + |
| 3 | 3 | M | 69 | MCA | 6.1 | C | − | −0.22 | − | + | − | + |
| 4 | 4 | M | 76 | MCA | 14.1 | A | + | 0.70 | + | − | − | + |
| 5 | 5 | F | 71 | ICA PcomA | 5.9 | C | − | 0.01 | − | + | − | + |
| 6 | F | 71 | ICA terminal | 3.5 | NAc | + | 0.64 | − | + | − | + | |
| 6 | 7 | F | 53 | dACA | 7.2 | A | + | 0.68 | + | + | − | + |
| 8 | F | 53 | dACA | 6.7 | B | + | 0.62 | + | + | − | + | |
| 9 | F | 53 | AcomA | 4.2 | C | − | 0.02 | + | + | + | + | |
| 7 | 10 | F | 63 | MCA | 5.4 | B | + | 0.04 | + | + | − | − |
| 8 | 11 | F | 70 | MCA | 5.1 | B | + | 0.44 | − | + | − | − |
| 9 | 12 | M | 60 | AcomA | 4.7 | C | − | 0.00 | + | − | − | − |
| 10 | 13 | F | 63 | AcomA | 5.0 | B | − | 0.02 | + | + | − | − |
| 11 | 14 | M | 61 | MCA | 7.2 | B | + | 0.60 | + | − | − | + |
| 12 | 15 | F | 73 | MCA | 9.6 | A | + | 0.75 | − | − | − | − |
| 13 | 16 | F | 55 | AcomA | 4.0 | C | − | 0.04 | + | − | − | + |
| 14 | 17 | F | 69 | AcomA | 5.6 | C | − | 0.03 | − | + | − | − |
Note:—Ach indicates anterior choroidal artery; PcomA, posterior communicating artery; ACA (A1), anterior cerebral artery (A1 segment); dACA, distal anterior cerebral artery; HT, hypertension; DL, dyslipidemia; DM, diabetes mellitus; CS, cigarette smoking; NA, not assessed due to anatomic reasons; +, present; −, absent.
↵a Intraoperative plaque assessment in the aneurysm was demonstrated as the following: grade A, major plaques; grade B, minor plaques; grade C, no plaques.
↵b WVCR indicates a high-intensity area in the aneurysm wall to the background low-intensity area inside the aneurysm.
↵c Impossible to characterize the entire aneurysm due to anatomic reasons.