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Diffusion tensor imaging and fiber tractography in cervical compressive myelopathy: preliminary results.
MedLine Citation:
PMID:  21494906     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVE: To assess diffusion tensor imaging (DTI) parameters in cervical compressive myelopathy (CCM) patients compared to normal volunteers, to relate them with myelopathy severity, and to relate tractography patterns with postoperative neurologic improvement. SUBJECTS AND METHODS: Twenty patients suffering from CCM were prospectively enrolled (M:F = 13:7, mean age, 49.6 years; range 22-67 years) from September 2009 to March 2010. Sensitivity encoding (SENSE) single-shot echo-planar imaging (EPI) was used for the sagittal DTI. Twenty sex- and age-matched normal volunteers underwent the same scanning procedure. Fractional anisotropy (FA) and apparent diffusion coefficient (ADC) values in the spinal cord were compared between the patients and normal volunteers and were related to myelopathy severity based on Japanese Orthopedic Association (JOA) scores. Tractography patterns were related to myelopathy severity and postoperative improvement. RESULTS: There were significant differences between patients and normal volunteers in terms of FA (0.498 ± 0.114 vs. 0.604 ± 0.057; p = 0.001) and ADC (1.442 ± 0.389 vs. 1.169 ± 0.098; p = 0.001). DTI parameters and tractography patterns were not related to myelopathy severity. In ten patients in the neurologically worse group, postoperative neurologic improvement was seen in four of five patients with intact fiber tracts, but only one of five patients with interrupted fiber tracts exhibited neurologic improvement. CONCLUSION: DTI parameters in CCM patients were significantly different from those in normal volunteers but were not significantly related to myelopathy severity. The patterns of tractography appear to correlate with postoperative neurologic improvement.
Authors:
Joon Woo Lee; Jae Hyoung Kim; Jong Bin Park; Kun Woo Park; Jin S Yeom; Guen Young Lee; Heung Sik Kang
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-15
Journal Detail:
Title:  Skeletal radiology     Volume:  -     ISSN:  1432-2161     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7701953     Medline TA:  Skeletal Radiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Radiology, Seoul National University Bundang Hospital, 300 Gumidong, Bundag-Gu, Seong Nam, Gyeongi-do, 463-707, Korea.
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