Interobserver and intermodality agreement for the identification of primary feeders
| MRA | Interobserver Agreementa | MRAb | DSA | Intermodality Agreementc | ||
|---|---|---|---|---|---|---|
| Reader 1 | Reader 2 | |||||
| MMA | 6 | 6 | 6 | 6 | ||
| AMA | 1 | 1 | 1 | 1 | ||
| APhA | 0 | 1 | 1 | 0 | ||
| OA | 3 | 2 | 2 | 2 | ||
| OphA | 4 | 3 | 4 | 4 | ||
| ILT | 3 | 3 | 18 (86%) | 3 | 3 | 20 (95%) |
| MHT | 2 | 4 | κ = 0.83 | 3 | 3 | κ = 0.94 |
| ACA | 0 | 0 | [0.66–1.00] | 0 | 0 | [0.84–1.00] |
| MCA | 1 | 1 | 1 | 1 | ||
| PCA | 0 | 0 | 0 | 0 | ||
| SCA | 0 | 0 | 0 | 0 | ||
| AICA | 1 | 0 | 0 | 1 | ||
| PICA | 0 | 0 | 0 | 0 | ||
| Other | 0 | 0 | 0 | 0 | ||
Note:—Data are number of meningiomas. Data in parentheses are the percentage of times that results that were concordant, and data in brackets are 95% confidence intervals. MMA indicates middle meningeal artery; AMA, accessory meningeal artery; APhA, ascending pharyngeal artery; OA, occipital artery; OphA, ophthalmic artery; ILT, inferolateral trunk; MHT, meningohypophyseal trunk; MCA, middle cerebral artery; ACA, anterior cerebral artery; PCA, posterior cerebral artery; SCA, superior cerebellar artery; AICA, anterior inferior cerebellar artery; PICA, posterior inferior cerebellar artery.
↵a Agreement of MRA between Reader 1 and Reader 2.
↵b Consensus reading at MRA of Reader 1 and Reader 2.
↵c Agreement between the consensus reading of MRA of Reader 1 and Reader 2 and DSA.