| 陈雷,洪楠,杜湘珂.MRI和核素骨扫描对SARS患者早期股骨头缺血坏死诊断的比较[J].中国医学影像技术,2005,21(2):298~300 |
| MRI和核素骨扫描对SARS患者早期股骨头缺血坏死诊断的比较 |
| Avascular necrosis in severe acute respiratory syndrome: MR imaging with radionuclide correlation |
| 投稿时间：2004-12-22 修订日期：2005-01-06 |
| DOI： |
| 中文关键词: 磁共振成像 放射性核素 股骨头缺血性坏死 ROC曲线 严重急性呼吸综合征 |
| 英文关键词:Magnetic resonance imaging Radionuclide Avascular necrosis of femur head Receiver operating characteristic curve Severe acute respiratory syndrome |
| 基金项目: |
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| 中文摘要: |
| 目的 比较磁共振成像(MRI)和放射性核素骨扫描(RN)对SARS患者的早期股骨头缺血坏死(AVN)的诊断。方法 对31例怀疑AVN的SARS患者的62个股骨头进行MRI和RN检查。由3位资深影像医师在不知道最终结果的情况下分析所有MR及RN检查结果并按照5级法判断进行是否有AVN的诊断价值。利用受试者操作特性曲线(ROC)等分析MR及RN对早期AVN的诊断效能的区别。结果 62个股骨头经1年临床随访最终确诊17例股骨头坏死,MRI和RN均诊断其中16例。45个正常股骨头,MRI诊断完全正常的股骨头24例。RN诊断完全正常的股骨头11例。MRI诊断AVN的ROC下面积(0.985)大于RN的ROC曲线下面积(0.926),但两者间没有显著的统计学差异。结论 MRI较RN诊断SARS患者早期AVN更有优势。 |
| 英文摘要: |
| Objective To evaluate the role of magnetic resonance imaging (MRI) and radionuclide (RN) in the early diagnosis of femoral head avascular necrosis (AVN) in severe acute respiratory syndrome (SARS) patients. Methods Thirty-one SARS patients who were suspected of femoral head AVN underwent both MR and bone scan. All the MR and RN images were read independently by three observers who were blinded to the results of another imaging modality and the results of clinical records. The MR signal intensity and RN characteristics of all femoral head AVN were noted, and the receiver operating characteristic (ROC) method was used to compare the difference of diagnostic performance between the two techniques. Results AVN of femoral head was correctly diagnosed in 16/17 hips on MRI and RN, and normal femoral head was correctly diagnosed in 24/45 hips on MRI and in 11/45 hips on RN. The area under ROC curves for MR was larger than that for RN (0.985 vs 0.926), but the difference did not reach statistical significance. Conclusion MR imaging is more sensitive and accurate for the early diagnosis of femoral head AVN than RN in SARS patients. |
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