Research Article
Measurements of Epidural Space Depth Using Preexisting CT Scans Correlate with Loss of Resistance Depth during Thoracic Epidural Catheter Placement
| Anesthesiologists’ measurements versus radiologist’s measurement | | Anesthesiologist 1 | Anesthesiologist 2 | Anesthesiologist 3 |
| Measurements within 1 cm | 98% | 98% | 100% | Measurements within 0.5 cm | 98% | 96% | 86% | Measurements were the same | 22% | 34% | 18% | Root mean squared error | 2.5 | 2.3 | 3.7 | Intraclass correlation coefficient | 0.98 | 0.99 | 0.97 |
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