DSA | |||||
---|---|---|---|---|---|
Non-invasive technique | Operable | Not operable | Sensitivity | Specificity | |
*Sensitivities not reliable owing to small numbers of operable stenoses. | |||||
Operable, 80–99% stenosis; not operable, 0–79% or 100% stenosis. | |||||
CT, computed tomography; DSA, digital subtraction intra-arterial angiography; MR, magnetic resonance. | |||||
CT angiography | Operable | 0 | 0 | ||
Not operable | 3 | 31 | 0* | 1.00 | |
MR angiography | Operable | 2 | 2 | ||
Not operable | 1 | 29 | 0.67* | 0.94 | |
Doppler | Operable | 3 | 4 | ||
Not operable | 0 | 27 | 1.00* | 0.87 |