首页> 外文会议>World congress on medical physics and biomedical engineering;International congress of the IUPESM >The availability of diffusion-weighted imaging with the fluid-attenuated inversion recovery method (FLAIR-DWI) with a low performance MR unit in chronic ischemia disease
【24h】

The availability of diffusion-weighted imaging with the fluid-attenuated inversion recovery method (FLAIR-DWI) with a low performance MR unit in chronic ischemia disease

机译:在慢性缺血性疾病中,使用MR性能低下的液体衰减反转恢复方法(FLAIR-DWI)进行弥散加权成像的可行性

获取原文

摘要

Purpose: In magnetic resonance imaging (MRI), the diffusion-weighted image (OWI) is an important technique for diagnosis of acute infarction; however, in a 1.0 Tesla low-performance MR unit, chronic ischemia is often detected as a high signal and misdiagnosed as acute infarction. Fluid-attenuated inversion recovery (FLAIR)-DWI was used in an attempt to solve this problem, and the availability is discussed. Materials and methods: MR imaging was performed in 35 patients, after acute infarction (n = 19), and with chronic ischemia (n = 16). Conventional-DWI (C-DWI) and FLAIR-DWI were used for all patients. The echo time (TE) was 140 ms. The signal-to-noise ratio (SNRs) and apparent diffusion coefficient (ADC) map in the region of acute infarction or chronic ischemia and contralateral normal brain were estimated. Results: In all regions, ADC was not significantly different between C-DWI and FLAIR-DWI (p >0.05). In chronic ischemia and acute infarction, the SNR of ischemic regions using FLAIR-DWI was significantly lower than that of C-DWI (p <0.05). Furthermore, the SNR of acute infarction regions was significantly higher than that in chronic ischemic regions (p <0.05). Conclusion: In a low-performance MR unit, the discrimination between chronic ischemia and acute infarction was improved by using FLAIR-DWI.
机译:目的:在磁共振成像(MRI)中,弥散加权图像(OWI)是诊断急性梗死的重要技术。但是,在1.0特斯拉低性能MR装置中,经常将慢性缺血检测为高信号,并将其误诊为急性梗塞。流体衰减反演恢复(FLAIR)-DWI试图解决这一问题,并讨论了其可用性。材料和方法:急性梗死后(n = 19)和慢性缺血(n = 16)的35例患者进行了MR成像。所有患者均使用常规DWI(C-DWI)和FLAIR-DWI。回声时间(TE)为140毫秒。估计了急性梗塞或慢性缺血和对侧正常脑区域的信噪比(SNR)和表观扩散系数(ADC)图。结果:在所有区域,C-DWI和FLAIR-DWI之间的ADC差异均无统计学意义(p> 0.05)。在慢性缺血和急性梗死中,使用FLAIR-DWI的缺血区域的SNR显着低于C-DWI(p <0.05)。此外,急性梗死区的信噪比显着高于慢性缺血区(p <0.05)。结论:在功能低下的MR单元中,使用FLAIR-DWI可以改善对慢性缺血和急性梗死的区分。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号