Interobserver and intermodality agreement for the location of dural attachment of meningiomas
| MRA/MRI | Interobserver Agreementa | MRA/MRIb | Surgeryc | Agreementd | ||
|---|---|---|---|---|---|---|
| Reader 1 | Reader 2 | |||||
| Convexity | 4 | 4 | 4 | 4 | ||
| Parasagittal | 2 | 2 | 2 | 2 | ||
| Falx | 1 | 1 | 1 | 1 | ||
| Sphenoid ridge | 5 | 6 | 5 | 5 | ||
| Anterior clinoid | 1 | 0 | 1 | 1 | ||
| Cen. skull base | 1 | 1 | 19 (90%) | 1 | 1 | 21 (100%) |
| Mid. cran. fossa | 1 | 1 | κ = 0.95 | 1 | 1 | κ = 1.00 |
| Tentorial | 1 | 1 | [0.84–1.00] | 1 | 1 | [1.00–1.00] |
| Petroclival | 2 | 2 | 2 | 2 | ||
| T-S junction | 1 | 1 | 1 | 1 | ||
| CPA | 1 | 1 | 1 | 1 | ||
| Cerebellar conv. | 1 | 1 | 1 | 1 | ||
| 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. Cen. skull base indicates central skull base; Mid. cran. fossa, middle cranial fossa; T-S junction, transverse-sigmoid sinus junction; CPA, cerebellopontine angle; Cerebellar conv., cerebellar convexity
↵a Agreement of MRA/MRI between Reader 1 and Reader 2.
↵b Consensus reading of MRA/MRI of Reader 1 and Reader 2.
↵c Final diagnosis of dural attachment was determined by surgical findings. When total tumor resection was not obtained, DSA findings were also used for determining the dural attachment of meningiomas.
↵d Agreement between the consensus reading of MRA/MRI of reader 1 and reader 2 and surgical diagnosis.