通过结合时间飞跃法和黑血序列进行的脑正反对比磁共振血管造影混合成像：其在烟雾病中的价值

Hybrid of opposite-contrast magnetic resonance angiography of the brain by combining time-of-flight and black blood sequences: its value in moyamoya disease.

作者信息

Tsuchiya Kazuhiro, Yoshida Maiko, Imai Masamichi, Nitatori Toshiaki, Kimura Tokunori, Ikedo Masato, Takemoto Shuhei

机构信息

Department of Radiology, Kyorin University Faculty of Medicine, Tokyo, Japan.

出版信息

J Comput Assist Tomogr. 2010 Mar-Apr;34(2):242-6. doi: 10.1097/RCT.0b013e3181b8aff4.

DOI:10.1097/RCT.0b013e3181b8aff4

PMID:20351513

Abstract

OBJECTIVE

We assessed the value of a new magnetic resonance angiography (MRA) technique named hybrid of opposite-contrast (HOP) MRA in the diagnosis of moyamoya disease.

METHODS

Using a dual-echo sequence, we obtained the first echo for time-of-flight (TOF) MRA followed by the second echo for black blood MRA. We then subtracted the black blood MRA data set from that of the TOF MRA followed by maximum-intensity projection. In 14 patients, we performed HOP MRA and compared the findings with those on 3-dimensional TOF MRA and MR images. The HOP MRA was also compared with a radionuclide perfusion study (7 patients).

RESULTS

The HOP MRA technique improved the demonstration of distal arteries in 13 patients. The findings in HOP MRA correlated with MR images in 9 patients as well as with the perfusion study in 6 patients.

CONCLUSIONS

The HOP MRA technique demonstrated the distal arterial branches in moyamoya disease well and facilitated the perfusion assessment with MR imaging.

摘要

目的

我们评估了一种名为对侧对比混合（HOP）磁共振血管造影（MRA）的新技术在烟雾病诊断中的价值。

方法

使用双回波序列，我们先获取用于时间飞跃（TOF）MRA的第一个回波，接着获取用于黑血MRA的第二个回波。然后我们从TOF MRA的数据集中减去黑血MRA数据集，随后进行最大强度投影。在14例患者中，我们进行了HOP MRA，并将结果与三维TOF MRA和磁共振图像的结果进行比较。HOP MRA还与放射性核素灌注研究进行了比较（7例患者）。