Quiz: MSK – MR Neurography: Techniques & Applications – Gustav Andreisek

Which of the following imaging techniques is considered an anatomic non-selective nerve imaging technique?
- 3D SPACE with isotropic resolution
- 3D Diffusion weighted PSIF
- 3D SHINKEI
- 3D FSE with vascular suppression
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Regarding MR neurography interpretation, which of the following statements is true?
- The size of the nerve similar to or smaller than an artery nearby is probably a sign of neuropathy.
- When the fascicular appearance of the nerve is maintained, the nerve is always normal.
- Perineural stranding by T1-weighted imaging is a feature of peripheral nerve injury.
- Hyperintensity of a nerve by T2-weighted imaging is always a sign of peripheral neuropathy
- Following contrast administration, a lack of enhancement indicates there is no nerve injury.
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Regarding MR neurography reports, structured reporting is a useful way to communicate with the referring physician. Which of the following is most important for the impression of the report?
- Documenting the grade of injury (Seddon/Sunderland)
- Documenting hyperintensity level of the nerves
- Documenting the fascicular distortion of the nerves
- Documenting the contrast uptake in the nerve
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Comparing functional imaging to anatomic imaging:
- information about axonal regeneration is better obtained with anatomic sequences
- information on proton diffusion directionality in a nerve is obtained by DWI, not anatomic sequences
- tractography of the nerves is acquired from vascular suppression of anatomic imaging rather than functional imaging
- FA and ADC values in the nerves are quantitative metrics acquired by functional sequences that may be useful for diagnosing peripheral neuropathy
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