https://scholars.lib.ntu.edu.tw/handle/123456789/201444
標題: | Blood Perfusion of Vertebral Lesions Evaluated with Gadolinium-Enhanced Dynamic Mri: In Comparison with Compression Fracture and Metastasis | 作者: | CHEN, WEI-TSUNG SHIH, TIFFANY TING-FANG CHEN, RAN-CHOU LUO, HSIN-YEN 施庭芳 |
關鍵字: | Contrast Media;Gadolinium DTPA;Magnetic Resonance Imaging;Spinal Fractures;Spine;Neoplasm Metastasis | 公開日期: | 2002 | 卷: | v.15 | 期: | n.3 | 起(迄)頁: | 308-314 | 來源出版物: | JOURNAL OF MAGNETIC RESONANCE IMAGING | 摘要: | PURPOSE: To investigate blood perfusion of vertebral lesions using dynamic Gd-DTPA-enhanced MRI. MATERIALS AND METHODS: Dynamic MR studies were performed for cases of acute compression fracture, chronic compression fracture, metastatic vertebral lesions with or without compression fracture. A total of 42 patients (71 vertebral segments) were included. Five types of time-intensity curves (TICs) were defined as: nearly no enhancement (type A), slow enhancement (type B), a rapid contrast wash-in followed by an equilibrium phase (type C), a rapid contrast wash-in followed by early wash-out (type D), and a rapid contrast wash-in with a second slower-rising slope (type E). RESULTS: Metastatic vertebral lesions with or without fracture had a higher peak enhancement percentage and steeper enhancement slope than those of chronic compression fracture, but had no difference as compared to those of acute compression fracture. The type D curve had high positive predictive value for metastatic group (100%), and the type E curve had high positive predictive value for benign compression fracture (85.7%). CONCLUSION: Type D and E curves are valuable in the differentiation of benign and malignant vertebral lesions. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/96954 |
顯示於: | 醫學系 |
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