Abstract #1908

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

Qingle Kong^1,2,3, Haiqiang Qin⁴, Jing An⁵, Yan Zhuo^1,3, and Zihao Zhang^1,3

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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