Abstract #4229

Improvement of distortion-free diffusion tensor imaging of lumbar nerve roots using direct coronal MultiVane-SPLICE diffusion-weighted MRI.

Takayuki Sakai^1,2, Masami Yoneyama³, Atsuya Watanabe^4,5, Daichi Murayama¹, Shigehiro Ochi¹, and Tosiaki Miyati⁶

¹Radiology, Eastern Chiba Medical Center, Tonage, Japan, ²Division of Health Sciences, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan, ³Philips Japan, Tokyo, Japan, ⁴General Medical Services, Chiba University Graduate School of Medicine, Chiba, Japan, ⁵Orthopaedic Surgery, Eastern Chiba Medical Center, Chiba, Japan, ⁶Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan

Diffusion tensor imaging (DTI) has a severe problem such as high geometric distortion and body motion. To solve these problems, we attempted to apply a split acquisition of fast spin-echo signals for diffusion imaging (SPLICE) instead of conventional Mx-eliminated TSE-DTI. In addition, so as to improve the incoherent signal phase due to motion, SPLICE was combined with MultiVane (known as PROPELLER) which is to sample k-space in a rotating fashion using a set of radially directed blades. In this study, we evaluated the effect of accuracy and reproducibility of the quantitative values in lumbar nerve roots using MultiVane-SPLICE-DTI.

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