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Abstract #1908

7T TOF-MRA showed a decreased contrast-to-noise ratio of the lenticulostriate arteries in hemispheres with unilateral lacunar stroke

Qingle Kong1,2,3, Haiqiang Qin4, Jing An5, Yan Zhuo1,3, and Zihao Zhang1,3

1State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China, 2University of Chinese Academy of Sciences, Beijing, China, 3The Innovation Center of Excellence on Brain Science, Chinese Academy of Sciences, Beijing, China, 4Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China, 5Siemens Shenzhen Magnetic Resonance Ltd., Shenzhen, China

7T TOF-MRA has demonstrated an exquisite capacity for imaging the lenticulostriate artery (LSA) due to its high spatial resolution and in-flow effect. However, due to the morphological variability of the LSA, a clinical application is needed to identify abnormalities of this vessel. In this study, we analyzed the LSA using 7T TOF-MRA on patients with unilateral lacunar stroke. Comparing the results with other morphological parameters, we found that a reduced contrast-to-noise ratio (CNR) was a more sensitive parameter for reflecting impairment of the LSA on the ipsilateral side of the lacunae.

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