Table 1 Cross-referenced morphometric properties of histological sections, magnetic resonance microscopy, and high-resolution ultrasound of median nerves.

From: Fascicle differentiation of upper extremity nerves on high-resolution ultrasound with multimodal microscopic verification

 

HCS

MRM

HRUS

Fascicle count

10.07 ± 2.87

9.19 ± 2.46 (-8.7)

7.04 ± 2.26 (-30.1)

Single fascicles

10.07 ± 2.87

8.61 ± 2.43 (-19.0)

5.40 ± 2.14 (-46.4)

Fascicular clusters

0 [0–0] †

0.58 [0.08–0.67]

1.67 [1.33–2]

Non-depicted fascicles

0 [0–0] †

0.10 [0–0]

0.17 [0–0.46]

Accurately depicted fascicles

1 [1–1] †

0.88 [0.84–0.96]

0.53 [0.48–0.67]

CSA nerve [mm2]

9.20 ± 1.73

10.28 ± 1.40 (11.7)

11.08 ± 1.70 (20.4)

CSA fascicles [mm2]

5.01 ± 0.89

5.29 ± 0.66 (5.6)

4.33 ± 0.60 (-13.6)

CSA largest fascicle [mm2]

1.49 ± 0.85

1.61 ± 0.90 (8.0)

1.60 ± 0.87 (7.4)

Fascicular ratio

0.55 ± 0.09

0.52 ± 0.07 (-5.5)

0.40 ± 0.05 (-27.3)

Interfascicular epineurium

0.45 ± 0.09

0.48 ± 0.07 (6.7)

0.60 ± 0.05 (33.3)

Roundness of nerve

0.62 ± 0.16

0.71 ± 0.11 (14.5)

0.48 ± 0.13 (-22.6)

Roundness of fascicles

0.68 ± 0.08

0.78 ± 0.05 (14.7)

0.57 ± 0.09 (-17.2)

  1. Data calculated for fourteen median nerve samples are presented as mean ± standard deviation (SD) or median with interquartile range [IQR]. Relative differences between modalities are shown in parentheses, with histological data serving as the baseline. CSA – cross-sectional area; HCS – histological cross-section; HRUS – high-resolution ultrasound; MRM – magnetic resonance microscopy; † – considered as a referential value with single fascicles and no cluster fascicles or non-depicted fascicles.
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