Meeting Banner
Abstract #1693

Exercise modulates brain pulsatility: Insights from q-aMRI and MRI-based flow methods

Jethro Stephan Wright1,2, Edward Clarkson1,2, Haribalan Kumar3, Itamar Terem4, Alireza Sharifzadeh-Kermani1,2, Josh McGeown1,5, Ed Maunder6, Paul Condron1,5, Gonzalo Maso-Talou2, David Dubowitz7,8, Miriam Scadeng1,5, Sarah-Jane Guild7, Vickie Shim1,2, Samantha Jane Holdsworth1,5, and Eryn Kwon1,2
1Mātai Medical Research Institute, Gisborne, New Zealand, 2Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand, 3General Electric Healthcare, Gisborne, New Zealand, 4Department of Electrical Engineering, Stanford University, Stanford, CA, United States, 5Faculty of Medical Health Science & Centre for Brain Research, University of Auckland, Auckland, New Zealand, 6Sports Performance Research Institute New Zealand, Auckland University of Technology, Auckland, New Zealand, 7Faculty of Medical Health Sciences & Centre for Brain Research, University of Auckland, Auckland, New Zealand, 8Centre for Advanced MRI (CAMRI), University of Auckland, Auckland, New Zealand

Synopsis

Keywords: Quantitative Imaging, Neurofluids, Brain Motion, Pulsatility, Amplified MRI

Motivation: The interaction between cranial fluid flow and brain displacement patterns following exercise has not been studied in an MRI context. Quantification of this relationship is now possible with the novel quantitative amplified MRI (q-aMRI) algorithm.

Goal(s): Characterization of intracranial fluid dynamics with low-intensity exercise to measure how these correlate.

Approach: Cerebral blood flow (CBF), cerebrospinal fluid (CSF) flow, and brain motion were measured at rest and during handgrip exercise to assess relative changes.

Results: During exercise, CBF was less pulsatile, CSF flow increased and did not regurgitate, and brain motion reduced. q-aMRI brain motion patterns mimicked CSF flow patterns.

Impact: This study demonstrates exercise has a physiological effect on fluid flow and brain displacement. It highlights q-aMRI’s potential diagnostic applications, as intracranical dynamics coupling could serve as a potential biomarker of abnormality, especially in intracranial pressure and fluid-related disorders.

How to access this content:

For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.

After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.

After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.

Click here for more information on becoming a member.

Keywords