Variation in Interobserver Agreement for the Presence of the Pulvinar Sign on MR Images in 86 Cases of vCJD
| Sequence | No. of Images | Observer 1 Positive* | Observer 2 Positive* | Concordance Positive* | κ Value |
|---|---|---|---|---|---|
| PD | 58 | 45 (78) | 51 (88) | 47 (81) | 0.64 |
| T2 | 108 | 71 (66) | 83 (77) | 76 (70) | 0.73 |
| FLAIR | 30 | 30 (100) | 30 (100) | 30 (100) | 1.0 |
| All images | 110 | 91 (83) | 100 (91) | 96 (87) | 0.65 |
* Data are number of images. Numbers in parentheses are percentages.