Table 2 Diffusion tensor imaging (DTI) and generalised q-space imaging (GQI) metrics from the ulnar nerve.

From: Diffusion tensor imaging in cubital tunnel syndrome

Location

Mean (SD)

Fractional anisotropy

Quantitative anisotropy

Normalised quantitative anisotropy

Mean diffusivity (× 10–3 mm2/s)

Axial diffusivity (× 10–3 mm2/s)

Radial diffusivity (× 10–3 mm2/s)

Healthy volunteers

Patients

p-value

Healthy volunteers

Patients

p-value

Healthy volunteers

Patients

p-value

Healthy volunteers

Patients

p-value

Healthy volunteers

Patients

p-value

Healthy volunteers

Patients

p-value

Overall

0.511 (0.153)

0.455 (0.099)

< 0.001

0.125 (0.034)

0.123 (0.047)

0.511

0.340 (0.122)

0.345 (0.064)

0.953

1.191 (0.231)

1.310 (0.179)

0.119

2.024 (0.604)

2.008 (0.456)

0.969

0.778 (0.257)

0.958 (0.251)

< 0.001

Within the arm

0.584 (0.047)

0.493 (0.077)

< 0.001

0.131 (0.039)

0.118 (0.044)

0.269

0.360 (0.124)

0.338 (0.101)

0.056

1.119 (0.176)

1.161 (0.092)

0.112

1.977 (0.354)

1.857 (0.160)

0.448

0.690 (0.105)

0.813 (0.111)

 < 0.001

Within the cubital tunnel

0.508 (0.092)

0.454 (0.017)

0.036

0.134 (0.037)

0.138 (0.058)

0.278

0.370 (0.142)

0.384 (0.087)

0.873

1.219 (0.221)

1.332 (0.193)

0.057

2.054 (0.368)

2.036 (0.298)

0.910

0.802 (0.156)

0.980 (0.155)

< 0.001

Within the forearm

0.463 (0.182)

0.418 (0.049)

0.437

0.086 (0.058)

0.069 (0.047)

0.641

0.227 (0.142)

0.175 (0.076)

0.420

1.165 (0.447)

1.392 (0.329)

0.067

1.959 (0.767)

2.090 (0.494)

0.463

0.772 (0.294)

1.043 (0.254)

0.003

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