Figure 2.
Mean and 95% confidence intervals of AP-DSD and TR-DSD at L1 through L5 in 72 control subjects (reader 1). (a) Mean AP-DSD diameter decreases in size moving caudally through the lumbar spine. Variability in AP-DSD is small and does not vary by vertebral level. (b) Mean TR-DSD diameter decreases in size moving caudally through the lumbar spine and variability increases slightly increases.
