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Sequential MR studies of cervical cord injury: correlation with neurological damage and clinical outcome
1Department of Orthopaedic Surgery, Okayama Rosai Hospital, Okayama City, Japan.
Objective:
To determine which images provide the most useful information and the best time to perform prognostic MRI.
Design:
The severity of neurological complications was assessed using the ASIA impairment scale. MRI was first performed within 48 h of injury, and was subsequently performed after 2-3 weeks, 3 months, 6 months, and 1 year.
Setting:
Inpatient SCI medicine unit.
Subjects:
Seventy-five patients with acute traumatic cervical spinal cord injury (9 women and 66 men) aged from 19-89 years (mean: 54.7 years).
Results:
Four characteristic patterns of signal changes were observed on MRI. These patterns correlated well with the severity of spinal cord damage and the clinical outcome.
Conclusion:
T2-weighted images provided the most useful information, and the best times for prognostic imaging were at the time of injury and 2-3 weeks later.
Insights
T2-weighted MRI sequences are most effective for predicting outcomes after spinal cord injury. Performing imaging at the time of injury and two to three weeks later offers the best prognostic information.
Area of Science:
- Neurology
- Radiology
- Spinal Cord Injury Research
Background:
- Spinal cord injury (SCI) poses significant challenges in predicting neurological recovery.
- Accurate prognostic tools are crucial for patient management and rehabilitation planning.
Purpose of the Study:
- To identify the most informative MRI sequences for prognostication in acute traumatic cervical SCI.
- To establish the optimal timing for performing prognostic MRI after SCI.
Main Methods:
- Seventy-five patients with acute traumatic cervical SCI underwent MRI within 48 hours of injury.
- Serial MRI scans were performed at 2-3 weeks, 3 months, 6 months, and 1 year post-injury.
- Neurological recovery was assessed using the ASIA impairment scale.
Main Results:
- Four distinct MRI signal change patterns were identified.
- These patterns demonstrated a strong correlation with the severity of spinal cord damage.
- MRI findings accurately predicted clinical outcomes and neurological impairment levels.
Conclusions:
- T2-weighted MRI sequences provide the most valuable prognostic information in SCI.
- Optimal timing for prognostic MRI includes the acute phase (within 48 hours) and subacute phase (2-3 weeks post-injury).