Breakdown of diskography in 11,599 exams on 10,229 patients
| Anatomic Level | No. of Exams by Level | No. of Disks Examined by Level | No. of Unsuccessful Exams* |
|---|---|---|---|
| Cervical | 2085 | 5981 | 53 |
| Thoracic | 1141 | 3083 | 17 |
| Lumbar | 9408 | 28071 | 63 |
| Total | 12634 | 37135 | 133 |
* Number of exams in which 1 or more diskography levels were unsuccessful or not attempted.