Diagnostic performance of various CT angiographic MPR analysis methods for assessment of degree of stenosis in carotid arteries compared with DSA
| MPR Analysis Method | Observer | Sensitivity (%) | Specificity (%) | Overall accuracy (%) |
|---|---|---|---|---|
| Cross-sectional | 1 | 73 (22/30) | 80 (32/40) | 77 (54/70) |
| 2 | 77 (23/30) | 98 (39/40) | 88 (62/70) | |
| Sagittal | 1 | 87 (26/30) | 70 (28/40) | 77 (54/70) |
| 2 | 87 (26/30) | 95 (38/40) | 91 (65/70) | |
| Combined* | 1 | 87 (26/30) | 70 (28/40) | 77 (54/70) |
| 2 | 90 (27/30) | 95 (38/40) | 93 (66/70) |
Note.—Numbers in parentheses are numbers of arteries. A 50% stenosis was the cutoff point for a hemodynamically significant finding.
* Combined MPR was considered to be positive when either of the MPR (cross-sectional or oblique sagittal) measurements yielded a positive result.