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KMID : 0371620020170020149
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Journal of Wonkwang Medical Science
2002 Volume.17 No. 2 p.149 ~ p.156
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Traumatic Vertebral Compression Fracture : Usefulness of MRI to Predict the Time of Fracture Onset
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Kim Kang-Deuk
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Abstract
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Background : The vertebral compression fracture is common, and distinction between the acute and chronic vertebral compression fractures pose a common clinical problem. So we evaluated the usefulness of MRI to predict the time of fracture onset in patients with traumatic vertebral compression fractures.
Materials and Methods : We retrospectively and prospectively studied MR images of 67 cases (17 thoracic, 50 lumbar spines) of vertebral compression fracture in 33 patients (13 men, 20 women; range, 20-79 years), and 12 patients underwent follow up MR imaging for 1 to 3 times following initial examination. MR images were evaluated for the signal intensity pattern and shape of the vertebral compression fracture comparing with those of normal vertebrae.
Results : The signal intensity in 35 of 37 fractures less than 12 weeks was low SI pattern on Tl-weighted images and inhomogeneous high on T2WI (type Ⅰ), and type Ⅰ was not seen after 13 weeks on MR images. All 30 fractures more than 13 weeks had been decreased in the area of low signal intensity and also in height of the compressed vertebral bodies. Twenty-five cases had low signal intensities (type Ⅲ and Ⅳ), 3 cases had high signal intensities (type Ⅱ) and 2 cases had iso signal intensities (type Ⅴ) on all pulse sequences.
Conclusion : There are good correlation between the signal intensity change and fracture age of traumatic vertebral compression fracture. So sequential change of signal intensity can predict the time of fracture onset of vertebral compression fracture on MRI.
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KEYWORD
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MR imaging, Spine, Compression fracture, Trauma
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