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Abstract #5399

Simultaneous Diffusion Tensor Imaging and T2 relaxometry in Lumbar Nerve Roots using Dual-Echo Single-Shot DW-EPI

Masami Yoneyama1, Takayuki Sakai2,3, Eunju Kim4, Tetsuo Ogino1, Atsuya Watanabe5,6, and Marc Van Cauteren7

1Philips Japan, Tokyo, Japan, 2Radiology, Eastern Chiba Medical Center, Chiba, Japan, 3Division of Health Sciences, Graduate School of Medical Sciences, Kanazawa University, Ishikawa, Japan, 4Philips Healthcare Korea, Seoul, Korea, Democratic People's Republic of, 5General Medical Services, Chiba University Graduate School of Medicine, Chiba, Japan, 6Orthopaedic Surgery, Eastern Chiba Medical Center, Chiba, Japan, 7Philips Healthcare Asia Pacific, Tokyo, Japan

Diffusion tensor imaging (DTI) is promising for evaluation of lumbar nerve root compression in the extraforaminal area. A quantitative assessment using T2 relaxometry is also promising to evaluate nerve injury. Hence, nerve root quantification using both DTI and T2 relaxation properties may improve the diagnosis of nerve roots in patients with lower back pain, but it requires a long scan time. In this study, we developed a new sequence to simultaneously obtain both diffusion parameters and T2 value in one single scan (Diffusion-Relaxation Matrix: DRM). DRM simultaneously provides diffusion tensor imaging and T2 map without prolongation of acquisition time. This quantitative combination may be helpful to further assess the lumbar nerve root pathology.

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