When to Choose MRN Over Ultrasound - Takeaways - MDSpire

When to Choose MRN Over Ultrasound

Proximal location, multi-nerve involvement, and multi-region extent favor MRN; ultrasound retains value for dynamic assessment and metal artifact–limited cases.

  • By

  • Andrea Surnit

  • May 14, 2026

  • 4 min

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  • 1

    Magnetic resonance neurography (MRN) provided greater diagnostic value than high-resolution ultrasound (HRUS) for upper-extremity neuropathies.

  • 2

    Among 800 patients, MRN accounted for 94.9% of cases with perceived additional diagnostic value compared to HRUS.

  • 3

    Lesion topography was the strongest predictor for added value from MRN, particularly for proximal lesions.

  • 4

    HRUS was useful for superficial lesions and dynamic assessments but provided additional value in fewer than 2% of cases.

  • 5

    The study emphasizes an individualized imaging approach, favoring MRN for complex cases and HRUS as a complementary tool.

Original Source(s)

When to Choose MRN Over Ultrasound

  • by Andrea Surnit

  • May 14, 2026

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