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| Correlative study of the X-ray, MRI manifestations of the process of vertebral fracture healing in rabbit with pathologic findings |
| ZHANG Shu-xian, GUO Xin-quan, SUN Xi-he, QIU Yu-jin, WANG Chao |
| Affiliated Hospital of Weifang Medical College, Weifang Shandong 261031, China |
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Abstract Objective: To evaluate the value of MRI and CR in the diagnosis of healing process of vertebral fracture. Methods: Twenty-one healthy adult female rabbits of the same age and weight were selected, firstly, animal models of vertebral fracture were made by operation, then they were examined with CR and MRI at 24 hours, 72 hours, 1 week, 2 weeks, 4 weeks, 6 weeks, 8 weeks respectively. MRI/CR manifestations and pathological appearances were analyzed. Results: With the repairing of the fractured vertebra, on CR, the low density band was substituted by high density band, the density of the fractured vertebra increased, and in the end, resumed equal to the adjacent vertebra. On MRI, the low signal intensity on T1WI and high signal intensity on T2WI resumed isointense on T1WI and T2WI. Conclusion: CR has some value to the diagnosis of vertebral fracture and the healing process of the rabbit by analyzing density of the callus. The signal intensity of MRI could reflect the pathology of vertebral fracture of rabbit to some extent.
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Received: 09 February 2007
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2007, Vol. 18 
