低场FLAIR技术在急性脊髓炎中的诊断价值  

Value of FLAIR pulse sequence in low-field MR in the diagnosis of acute myelitis

作　　者：向之明[1] 许向东[1] 谭理连[2] 胡煜升[3] 周燕发[3] 

机构地区：[1]广州市番禺区人民医院放射科,511400 [2]广州医学院附属第二医院放射科,广州510260 [3]华中科技大学同济医学院附属同济医院放射科,武汉430030

出　　处：《中华神经医学杂志》2008年第9期957-960,共4页Chinese Journal of Neuromedicine

摘　　要：目的 探讨快速液体衰减反转恢复（FLAIR）技术在急性脊髓炎中的应用价值。方法用0．5T超导磁共振（MR）机对52例健康者和33例急性脊髓炎患者行MR检查，扫描序列为T1WI，T2WI．FLAIR序列，33例患者中23例作了T1WI增强扫描，比较FLAIR和TSE-T2WI两种序列对病灶的碌示能力。结果33例患者33处病灶．FLAIR发现病灶33处，检出率100％，TSE—T2WI发现病灶23处，检出率69．7％；在显示病灶边缘情况方面，FLAIR显示清楚者32例，T2WI显示清楚者13例，存发现病灶及显示病灶边缘方面两者差异有统计学意义（P＜0．01）。结论FLAIR技术在脊髓炎的诊断中有较高的临床应用价值，应作为本病检查的常规方法。Objective To study the clinical diagnostic value of fluid-attenuated inversion recovery （FLAIR） pulse sequence in low-field MR for the acute myelitis. Methods Fifty-two healthy controls and 33 patients with acute myelitis were imaged with T1WI, T2WI and FLAIR imaging in a 0.5T superconducting MR scanner, and among them, 23 patients were imaged with T1WI after the injection of Gd-DTPA. The detectable abilities of lesions with FLAIR and TSE-T2WI were compared. Results The FLAIR imaging showed 33 lesions （100%）, but the TSE-T2WI only showed 23 lesions （69.7%） in the 33 cases; 32 lesions were clear with FLAIR in demonstrating the border of lesions, and 13 lesions with TSE-T2WI. Therefore, the FLAIR sequence were superior to TSE-T2WI in demonstrating the border of lesions and displaying the lesions （P〈0.01）. Conclusion FLAIR is a very useful sequence in the low-field MR for the acute myelitis, and it should be used as a routine diagnostic method for the acute myelitis.

关 键 词：磁共振成像 液体衰减反转恢复技术 急性脊髓炎 

分 类 号：R445.2[医药卫生—影像医学与核医学] R744[医药卫生—诊断学]