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. Author manuscript; available in PMC: 2018 Aug 1.
Published in final edited form as: Invest Radiol. 2017 Aug;52(8):447–455. doi: 10.1097/RLI.0000000000000361

Figure 7.

Figure 7

(A) Depth to the epidural space measured by the lumbar spine CAD algorithm versus depth to the epidural space measured by radiologists. (B) Bland-Altman analysis of epidural depths as measured by the lumbar spine CAD algorithm and radiologists. The difference between the depths measured by radiologists (RAD) and the depths measured by the CAD algorithm (CAD) are plotted against the average of the two measures (RAD+CAD)/2. The horizontal dashed lines represent the average difference (0.1 cm) and the 95% CI. μ: mean, σ: standard deviation.