Related Experiment Video
Updated: Jul 14, 2026
Diffusion Tensor Magnetic Resonance Imaging in Chronic Spinal Cord Compression
Published on: May 7, 2019
Propriospinal myoclonus: utility of magnetic resonance diffusion tensor imaging and fiber tracking
Emmanuel Roze1,2, Emmanuelle Apartis3,4, Marie Vidailhet1,5
1Department of Neurology, Saint-Antoine Hospital, AP-HP, Paris, France.
Abstract:
Propriospinal myoclonus (PSM) is a rare movement disorder characterized by involuntary spinal-generated muscular jerks that spread rostrally and caudally to other spinally innervated muscles. Most patients have no clear etiology, and conventional MRI of the spinal cord is generally normal. Here we report the use of magnetic resonance diffusion tensor imaging (DTI) and fiber tracking to detect tract-specific abnormalities in a patient with propriospinal myoclonus. As the patient had the fragile-X premutation and antithyroid antibodies, spinal cord DTI abnormalities may be related to these conditions. Tract-specific analysis may provide new insights into the pathophysiology of propriospinal myoclonus.
Insights
Propriospinal myoclonus (PSM) is a rare movement disorder. Diffusion tensor imaging (DTI) revealed spinal cord abnormalities in a patient, suggesting DTI can detect tract-specific changes in PSM.
Area of Science:
- Neurology
- Neuroimaging
- Movement Disorders
Background:
- Propriospinal myoclonus (PSM) is a rare disorder of involuntary, spinal-generated muscle jerks.
- Conventional MRI typically shows normal spinal cord findings in PSM patients.
- The etiology of PSM often remains unclear.
Observation:
- This study reports on a patient with PSM who also had the fragile-X premutation and antithyroid antibodies.
- Magnetic resonance diffusion tensor imaging (DTI) and fiber tracking were utilized.
- Tract-specific abnormalities in the spinal cord were detected using DTI.
Findings:
- DTI and fiber tracking successfully identified tract-specific abnormalities in the spinal cord of a PSM patient.
- These spinal cord DTI abnormalities may be associated with the patient's fragile-X premutation and antithyroid antibodies.
- This highlights the potential of DTI in visualizing subtle spinal cord changes in PSM.
Implications:
- Tract-specific analysis using DTI may offer new insights into the pathophysiology of propriospinal myoclonus.
- DTI could become a valuable tool for diagnosing and understanding PSM.
- Investigating potential links between genetic factors (fragile-X premutation) and autoimmune conditions (antithyroid antibodies) with PSM pathophysiology is warranted.
