Abstract #1460
Reduced-FOV Lumbar Spine T 1 MR Imaging Using High-Low EP-2DRF Excitation Pulse
Qinwei Zhang 1 , Yi-Xiang J Wang 1 , Heather Ting Ma 2 , Queenie Chan 3 , and Jing Yuan 1,4
1
Department of Imaging and Interventional
Radiology, The Chinese University of Hong Kong, Shatin,
N.T., Hong Kong,
2
Harbin
Institute of Technology Shenzhen Graduate School,
Shenzhen, Guangdong, China,
3
Philips
Healthcare, Hong Kong, Hong Kong,
4
CUHK
Shenzhen Research Institute, Shenzhen, Guangdong, China
T1ρ imaging has been proved to be a sensitive biomarker
for disc degeneration while suffering from long scan
time. Large field of view and respiratory motion further
adversely affect the mapping results. We proposed a 2DRF
pulse with novel high-low EP excitation trajectory to
realize reduced field of view (rFOV) T1ρ imaging in
lumbar spine region on a 3T clinical scanner. The scan
time was halved and motion artifact was eliminated. Good
consistency between rFOV and full FOV T1ρ maps was
observed. The proposed 2DRF has potential to be used for
high-resolution spine T1ρ imaging in routine clinical
scan.
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