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Insights into Imaging

Table 6 Size measurements (mm) for the abnormal and normal lumbosacral nerves (EMG/NCV testing patients)

From: Identifying lumbosacral plexus nerve root abnormalities in patients with sciatica using 3T readout-segmented echo-planar diffusion weighted MR neurography

Anatomical structures

Axis

Abnormal nerves

Normal nerves

Ratio (abnormal/normal)

L5 nerve (n = 2)

AP

4.5 (± 0.1)

2.7 (± 0.1)

1.6 (± 0.1)

 

Trans

6.3 (± 0.1)

5.4 (± 0.2)

1.2 (± 0.1)

S1 nerve (n = 5)

AP

3.8 (± 0.1)

2.6 (± 0.1)

1.5 (± 0.6)

 

Trans

6.8 (± 0.1)

5 (± 0.1)

1.4 (± 0.1)

  1. Mean (± SD) of nerve size shown by axis orientation and anatomical structure, and p values from Wilcoxon signed-rank tests were corrected for 4 tests
  2. AP = Anteroposterior; Trans = Transverse
  3. *Bonferroni-adjusted p value < 0.05 when the abnormal nerve was compared to the normal nerve. Non-significant differences determined
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