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Abstract #4864

A comparative study to assess the flow of meningeal lymphatic vessels in healthy volunteers and brain disorders using the IR-ALADDIN technique

Jun-Hee Kim1, Roh-Eul Yoo2,3, Seung-Hong Choi2,3, and Sung-Hong Park1
1Korea Advanced Institute of Science and Technology, Daejeon, Korea, Republic of, 2Department of Radiology, Seoul National University College of Medicine, Seoul, Korea, Republic of, 3Seoul National University Hospital, Seoul, Korea, Republic of

Synopsis

Keywords: Neurofluids, Neurofluids

Motivation: The difference in mLVs outflow between healthy control (HC) and brain disorder patients may contribute to toxic protein aggregation and cognitive decline.

Goal(s): To demonstrate mLVs structure and flow information of brain disorder patients and compare quantitative flow metrics between HC and patient

Approach: We applied IR-ALADDIN to acquire mLVs images around superior sagittal sinus in 20 HCs and 9 patients with various brain disorders such as meningioma, hydrocephalus.

Results: The mLVs size was reduced in patients compared to HC with no significant difference in mLVs velocity, leading to overall mLVs flow reduction in patients.

Impact: The reduced mLVs flow in brain disorder patients was confirmed using a non-invasive technique. This suggests the possibility to study relationship between brain disorders and waste clearance through the mLVs flow in further studies.

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Keywords