Daichi Murayama1, Takayuki sakai1, Masami Yoneyama2, and Shigehiro Ochi3
1Radiology, Eastern Chiba Medical Center, Chiba, Japan, 2Philips Japan, Tokyo, Japan, 3Eastern Chiba Medical Center, Chiba, Japan
1Radiology, Eastern Chiba Medical Center, Chiba, Japan, 2Philips Japan, Tokyo, Japan, 3Eastern Chiba Medical Center, Chiba, Japan
The aim of this study was to differentiate between spinal epidural hematoma, spinal epidural abscess and pyogenic spondylitis based on the ADC and T2 values obtained using Diffusion-Relaxation Matrix (DRM). DRM could be useful for differentiation of spinal epidural hematoma and infection.
Fig.1 Sequence diagram of diffusion-relaxation matrix (DRM) sequence consists of dual-echo single-shot EPI-DWI without prolongation of acquisition time. Bipolar diffusion gradient was inserted as a pre-pulse of T2-map acquisition. To obtain the dual echo of different TE, this technique uses two 180° refocusing pulses for one 90° excitation pulse.
Fig.2 The ΔT2 map(C) was also created by differencing the T2 map : b-1000(A) from the T2 map : b-0(B)