| Abnormality Classifications |
MR Imaging Findings |
Surgical Findings Reference Standard |
| True-positive |
False-negative |
False-positive |
True-negative |
| Primary Track |
|
|
|
|
|
| Intersphincteric |
31 |
2 |
0 |
|
33 |
| Transsphincteric |
14 |
0 |
2 |
|
16 |
| Suprasphincteric |
4 |
0 |
0 |
|
4 |
| Extrasphincteric |
3 |
0 |
0 |
|
3 |
| Detection Total |
52 |
2 |
2 |
54 |
56 |
| Abscess |
|
|
|
|
|
| Intersphincteric |
15 |
0 |
0 |
|
15 |
| Supralevator |
5 |
0 |
0 |
|
5 |
| Horseshoe Fistula |
|
|
|
|
|
| Infralevator (ischiorectal or Intersphincteric fossa) |
4 |
0 |
0 |
|
4 |
| Supralevator |
1 |
0 |
0 |
|
1 |
| Secondary internal opening |
18 |
|
|
|
18 |
|