Kinoshita Naoko, Tanaka Shigeko, Sugimori Yuko, Nakahira Koichi, Ryoke Koji, Matsuoka Toshiyuki, Fujioka Masayuki, Miki Yukio
Department of Radiology, Wakakusa Daiichi Hospital, 1-6, Wakakusa-cho, Higashiosaka city, Osaka, 579-8056, Japan.
Sakaguchi Clinic, Osaka, Japan.
Jpn J Radiol. 2018 Aug;36(8):472-476. doi: 10.1007/s11604-018-0751-2. Epub 2018 Jun 12.
We performed lumbar spinal magnetic resonance imaging of three-dimensional (3D) dual echo volumetric isotropic turbo spin echo acquisition (DE-VISTA) and constructed DE-VISTA additional fusion images (DE-VISTA-AFI), which is the addition of DE-VISTA proton density-weighted images (DE-VISTA-PDWI) to DE-VISTA T2-weighted images (DE-VISTA-T2WI). The aim of this study was to clarify whether DE-VISTA-AFI was able to clearly delineate spinal nerve roots.
A total of 677 patients underwent lumbar MR imaging, and the signal ratio (SR) between cerebrospinal fluid and nerve roots inside the dural sac and the SR between fat and nerve roots outside the dural sac were estimated using DE-VISTA-AFI, DE-VISTA-PDWI, DE-VISTA-T2WI, and 2D-T2WI.
The SR between cerebrospinal fluid and nerve roots inside the dural sac on DE-VISTA-AFI was higher than that on DE-VISTA-PDWI (p < 0.0001) and on 2D T2WI (p < 0.0001). The SR between the fat tissue and nerve roots outside the dural sac on DE-VISTA-AFI was higher than that on DE-VISTA-PDWI (p < 0.0001) and 2D T2WI (p < 0.0001).
DE-VISTA-AFI could clearly delineate the entire length of the lumbar nerve roots that run from the cauda equina in the spinal fluid through to the fat in the lateral recess, intervertebral foramen, and outside the intervertebral foramen.
我们对三维（3D）双回波容积各向同性涡轮自旋回波采集（DE-VISTA）进行了腰椎磁共振成像，并构建了DE-VISTA附加融合图像（DE-VISTA-AFI），即DE-VISTA质子密度加权图像（DE-VISTA-PDWI）与DE-VISTA T2加权图像（DE-VISTA-T2WI）相加。本研究的目的是阐明DE-VISTA-AFI是否能够清晰勾勒出脊神经根。
共有677例患者接受了腰椎磁共振成像检查，并使用DE-VISTA-AFI、DE-VISTA-PDWI、DE-VISTA-T2WI和二维T2加权成像（2D-T2WI）评估了硬脊膜囊内脑脊液与神经根之间的信号比（SR）以及硬脊膜囊外脂肪与神经根之间的信号比。
DE-VISTA-AFI上硬脊膜囊内脑脊液与神经根之间的SR高于DE-VISTA-PDWI（p<0.0001）和2D-T2WI（p<0.0001）。DE-VISTA-AFI上硬脊膜囊外脂肪组织与神经根之间的SR高于DE-VISTA-PDWI（p<0.0001）和2D-T2WI（p<0.0001）。
DE-VISTA-AFI能够清晰勾勒出从脊髓液中的马尾神经一直到侧隐窝、椎间孔和椎间孔外脂肪中的腰神经根的全长。
