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Abstract #4532

Quantitative assessment of lumbar nerve root compression using contrast-enhanced 3D-FIESTA imaging sequence

Kun Ou1, Hui Gao1, Weiyn Vivian Liu2, and Kun Zhang1
1First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, China, 2GE Healthcare, Beijing, China


Actual contact surface between the extraforaminal nerve root and the adjacent structures is commonly missing on the conventional MR scanning, possibly leading to misdiagnosis. In our study, the detection rate of nerve root compression was significantly higher on the 3D-FIESTA-C images than T2WI. The shortest distance between the extraforaminal nerve root and the disc of L4/5 and L5/S1 in the healthy group was significantly longer than that in the lumbar disc herniation (LDH) group. The spatial relationship between nerve roots and surrounding tissues could be better described using 3D-FIESTA-C sequence and was helpful for the detection of nerve root compression.

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