Is Diffusion Tensor Imaging Useful in the Assessment of the Sciatic Nerve and Its Pathologies? Our Clinical Experience

Overview

Journal Br J Radiol

Publisher Oxford University Press

Specialty Radiology

Date 2016 Jul 27

PMID 27459247

Citations 7

Authors

Angela Bernabeu

Susana Lopez-Celada

Arantxa Alfaro

Jesus J Mas

Javier Sanchez-Gonzalez

Affiliations

Soon will be listed here.

Abstract

Objective: To evaluate the usefulness of diffusion tensor imaging (DTI) in the clinical setting as a complementary tool to conventional MRI in the study and assessment of the sciatic nerve and its pathologies.

Methods: 17 patients diagnosed with different types of sciatic neuropathy and 10 healthy controls underwent a conventional MRI and a DTI study in a 3-T MR scanner (Achieva(®) 3-T X-Series; Philips Healthcare, Netherlands).

Results: In the control group, we were able to track and visualize the common sciatic nerve and its main branches from hip to foot. In the patient group, the affected sciatic nerves presented statistically significant lower fractional anisotropy values and higher apparent diffusion coefficient values when compared with controls, suggesting nerve damage. In all cases, DTI offered complementary information for diagnosis and/or confirmation of the suspected pathology. When compared with conventional MRI, DTI showed higher sensitivity for nerve damage detection.

Conclusion: DTI offers a significant improvement and an important complement to visualize the sciatic nerve and its main branches. In patients with sciatic nerve pathology DTI allows to a better detection and characterization of the nerve damage.

Advances In Knowledge: DTI enables in vivo dissection of the sciatic nerve white matter fibres; its use offers a significant improvement and complement to conventional MRI.

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