4.5 Review

Spinal Tractography as a Potential Prognostic Tool in Spinal Cord Injury: A Systematic Review

Journal

WORLD NEUROSURGERY
Volume 164, Issue -, Pages -

Publisher

ELSEVIER SCIENCE INC
DOI: 10.1016/J.WNeu.2022.04.103

Keywords

DTI; Magnetic resonance imaging; Spinal cord injury; Spinal cord lesion

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Magnetic resonance imaging is the most accurate examination to study the spinal cord, but diffusion tensor imaging (DTI) can provide additional details about spinal cord lesions. This literature review investigated the role, limitations, and potential use of DTI as a prognostic tool in spinal cord injury (SCI). The findings suggest that DTI parameters have promising utility as noninvasive biomarkers for SCI grade evaluation.
Magnetic resonance imaging is considered the most accurate examination to study the spinal cord. Nevertheless, the use of diffusion tensor imaging (DTI) can demonstrate additional key details about spinal cord lesions. We examined the literature to investigate and discuss the role, limitations, and possible evolution as a prognostic tool of DTI in spinal cord injury (SCI). For this systematic literature review, a detailed search was performed using PubMed (2005-2021), Cochrane Database of Systematic Reviews (2016-2021), and Cochrane Central Register of Controlled Trials (2016-2021). To be included, studies had to report the use of DTI in SCIs, its clinical relevance, and its use as a prognostic tool. We identified 17 studies comprising 299 patients. The mean age of patients was 41.22 +/- 10.62 years. There was a prevalence of males (70.9%) compared with females (29.1%). The main spinal cord tract involved and studied in SCIs was the cervical tract (57.5%), followed by conus terminalis (15.4%) and dorsal tract (13.7%). In all studies based on American Spine Injury Association impairment scale score for neurological assessment, a correlation was found between FA values and American Spine Injury Association impairment scale: patients with complete SCI had a statistically significative lower FA value at the injured site compared with patients with incomplete SCI. Published clinical studies showed promising results for the utility of DTI parameters as noninvasive biomarkers in SCI grade evaluation, remaining an evolving area of further investigation.

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