Diagnostic accuracy of magnetic resonance imaging enhancement pattern in knee bone,meniscus,ligaments,and articular cartilage injury: Comparison with routine magnetic resonance imaging scanning
10.3969/j.issn.1673-8225.2010.17.010
- VernacularTitle:磁共振关节内增强扫描评价膝关节骨质、半月板、韧带和关节软骨损伤的准确性:与常规磁共振扫描比较
- Author:
Jianzhong GE
;
Gang LI
- Publication Type:Journal Article
- From:
Chinese Journal of Tissue Engineering Research
2010;14(17):3078-3080
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND: Routine magnetic resonance imaging(MRI)scans can comparatively show intra-articular soft tissue structures,but there are still some limitations in the diagnosis of intra-articular lesions and injury due to deficiency in contrast of imaging.Enhanced MRI scan has been applied to the liver,brain and other parts,which effectively improves the diagnostic accuracy,but there are few reports on the enhanced scans of knee.OBJECTIVE: To evaluate clinical application value of MRI enhancement pattern in diagnosis of knee injury.METHODS: Totally 21 patients with knee injury(22 knees)were routinely scanned by 0.5T Signa Contour MRI scanner(GE company,USA).Then enhancer was injected into knee joint by the same physician and MRI enhancement pattern was performed in these patients.Film-reading and comparison were completed by two associate chief physicians.RESULTS AND CONCLUSION: Different levels of joint structural damage,such as bone,meniscus,ligaments,and articular cartilage and so on,were found in all patients by routine MRI scan.The extent and scope of its damage had been more clearly displayed by enhanced MRI scan.Meanwhile,misdiagnosis of meniscal injury by routine MRI scan was confirmed by enhanced MRI scan in 2 patients.Some damaged parts that were not found by routine MRI scan were Confirmed by enhanced MRI scan.All these demonstrated that positive rate of knee injury in MRI enhancement pattern was higher than conventional MRI scan.There was significant difference in meniscus injury between two patterns(P = 0.035).MRI enhancement pattern in comparison with conventional MRI can further improve the diagnostic accuracy rate of knee injury.
