Abstract:Objective To discuss the detection value of 3D FIESTA sequence and 3D-T2*FGRE sequence in the morphology of
the lumbar nerve inside and outside the spinal canal. Methods Fifteen healthy volunteers were examined by MRI with normal
sequence, 3D-FIESTA sequence and 3D-T2*FGRE sequence. The latter scan data were reconstructed by MPR and CPR in
workstation. A total of 120 lumbar nerves were rebuilt from the level of lumbar 2 vertebrae to lumbar 5 vertebrae. The signal
differences between the lumbar nerve and the surrounding tissue were observed. Results The lumbar nerve in the spinal canal
appeared low signal and the cerebrospinal fluid in the dural sac appeared high signal in the 3D-FIESTA sequence. The tissue
contrast was clear. Reconstruction images of lumbar nerves in the spinal canal showed clear. In the 3D-FIESTA sequence, the
nerve out of the vertebral canal showed a sord-like low signal, which could not be distinguished from the low signal of cortical
bone. In the 3D-T2*FGRE sequence, the lumbar nerve out of the spinal canal showed a sort-like high signal, the intervertebral disc
showed equal or slightly high signal, the adjacent vertebral body showed low signal, and the tissue contrast was clear. The lumbar
nerve and cerebrospinal fluid in the 3D-T2 *FGRE sequence were both high signal, and the nerve root in the spinal canal could not be
distinguished. Conclusion The 3D-FIESTA sequence and 3D-T2*FGRE sequence are both high resolution 3D volume acquisition, with
high soft tissue resolution and SNR, and the spinal nerves in and out of the spinal canal can be observed well within the scanning range.
The 3D-FIESTA sequence is used to show the lumbar nerve in the spinal canal, and the 3D-T2*FGRE sequence is used to show the
lumbar nerve out of the spinal canal.
那曼丽,李海波,吕喆,张滨,李梦参,耿冀. 高分辨3.0 T MRI多序列联合扫描显示腰神经的应用研究[J]. 中国医疗设备, 2018, 33(6): 63-66.
NA Manli, LI Haibo, LV Zhe, ZHANG Bin, LI Mengshen, GENG Ji. Lumbar Nerve Revealed by High Resolution 3.0 T MRI Multisequence Combined Scan. China Medical Devices, 2018, 33(6): 63-66.