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Contrast-enhanced digital subtraction MRI in musculoskeletal malignant tumors
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF RADIOLOGY
- Issue:
- 11
- DOI:
- 10.3760/j.issn:1005-1201.2004.11.006
- Key Word:
- 肿瘤,骨组织;肿瘤,肌组织;磁共振成像;减影技术;病理学
Abstract： 目的 评估增强减影在骨骼肌肉恶性肿瘤MRI中的临床应用价值.方法 50例骨骼肌肉恶性肿瘤病人进行MR增强扫描,MR对比剂采用钆喷替酸葡甲胺(Gd-DTPA,0.1 mmol/kg),用T1W增强后的图像与增强前的图像进行减影.通过对比度/噪声比值(C/Ns值)以及肿瘤影像征象清晰程度的比较,对MR减影与否进行评估.结果 MR对比增强减影图像比传统的T1W增强图像显示更清晰、更直观.所有病例都经手术和病理证实.50例骨骼肌肉恶性肿瘤图像MR减影的C/Ns值比传统T1W增强图像的C/Ns值高.MR减影图像的C/Ns值为109.74±5.10(x－±s),传统T1W增强图像的C/Ns值为23.61±3.16(t=101.51,P<0.05).减影前后肿瘤影像征象的比较结果显示:不规则边缘(χ2=7.86,P<0.05)、肿瘤分叶(χ2=7.16,P<0.05)和环形强化(χ2=7.44,P<0.05),对肿瘤影像征象清晰度差异的检出具有显著性意义.结论 MR对比增强减影比传统T1WI增强更能有效地显示骨骼肌肉恶性肿瘤.对比增强减影为检出和评估骨骼肌肉恶性肿瘤方面,提供了一个全新的诊断工具.
- [1]金延芳,尹南,贺聪.腹主动脉、髂动脉及下肢动脉的MR数字减影血管造影[J].1999,(3).
- [2]张雪哲,王武.肌肉骨骼肿瘤的MRI诊断[J].2002,(7).
- [3]Murray J G,Stack J P,Ennis J T,etc.Digital subtraction in contrast-enhanced MR imaging of the postoperative lumbar spine.[J].1994.
- [4]R Erlemann,M F Reiser,P E Peters,etc.Musculoskeletal neoplasms: static and dynamic Gd-DTPA--enhanced MR imaging.[J].1989,171(3).
- [5]K L, Verstraete,P, Lang.Bone and soft tissue tumors: the role of contrast agents for MR imaging.[J].2000,34(3).
- [6]S L, Hanna,J W, Langston,S A, Gronemeyer,etc.Subtraction technique for contrast-enhanced MR images of musculoskeletal tumors.[J].1990,8(3).
- [7]G.A.S.Lloyd,A.D.Cheesman,P.D.Phelps,etc.The demonstration of glomus tumours by subtraction MRI[J].1992,34(6).
- [8]Suto Yuji,Caner Biray E.,Tamagawa Yoichi,etc.Subtracted Synthetic Images in Gd-DTPA Enhanced MR[J].1989.
- [9]D A, May,R B, Good,D K, Smith,etc.MR imaging of musculoskeletal tumors and tumor mimickers with intravenous gadolinium: experience with 242 patients.[J].1997,26(1).