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KMID : 1103720130680060503
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Journal of the Korean Society of Radiology
2013 Volume.68 No. 6 p.503 ~ p.510
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Magnetic Resonance Enhancement Patterns at the Different Ages of Symptomatic Osteoporotic Vertebral Compression Fractures
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You Ja-Yeon
Lee Joon-Woo
Kim Jung-Eun
Kang Heung-Sik
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Abstract
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Purpose: To investigate the magnetic resonance (MR) enhancement patterns of symptomatic osteoporotic vertebral compression fracture (VCF) according to the frac- ture age, based on the successful single-level percutaneous vertebroplasty (PVP) cases. Materials and Methods: The study included 135 patients who underwent con- trast-enhanced MR imaging and successful PVP from 2005 to 2010 due to a single- level osteoporotic VCF. Two radiologists blinded to the fracture age evaluated the MR enhancement patterns in consensus. The MR enhancement patterns were clas- sified according to the enhancing proportion to the vertebral height and the pres- ence or extent of a non-enhancing cleft within the enhancing area on sagittal plane. The Fisher’ exact test, Kruskal-Wallis test and Mann-Whitney U test were per- formed to assess the differences in the MR enhancement patterns according to the fracture age. Results: Symptomatic VCFs show variable MR enhancement patterns in all fracture ages. A diffuse enhancing area can be seen in not only the hyperacute and acute VCFs but also the chronic symptomatic VCFs. Symptomatic VCFs having a segmen- tal enhancing area were all included in the hyperacute or acute stage. Most symp- tomatic osteoporotic VCFs had a non-enhancing cleft in the enhanced vertebral body (128/135, 94.8%). There was no statistical difference of the enhancement pat- tern according to the fracture age. Conclusion: Symptomatic VCFs show variable MR enhancement patterns in all fracture ages. The most common pattern is a non-enhancing cleft within a diffuse enhanced vertebra.
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KEYWORD
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Osteoporosis, Spinal Fractures, Fractures, Compression, Magnetic Resonance Imaging
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