ISMRM25 - Blood Vessel 3: Arterial Spin Labeling & Angiography Techniques

ISMRM & ISMRT Annual Meeting & Exhibition • 10-15 May 2025 • Honolulu, Hawai'i

Blood Vessel 3: Arterial Spin Labeling & Angiography Techniques

Digital Poster

Neuro

Monday, 12 May 2025

Exhibition Hall

09:15 - 10:15

Session Number: D-181

No CME/CE Credit

		Computer Number: 97 1626. Can signal intensity of silent MRA represent hemodynamic information in BAVM？ View Presentation Video L. Yang, C. Wu, J. Lu Department of Radiology and Nuclear Medicine, Xuanwu Hospital, Capital Medical University, Beijing, China Impact: As a three-dimensional, pseudo continuous arterial spin labeling (pcASL),contrast-free MR angiography, signal intensity of silent MRA can reflect blood flow and velocity in non-FAs and DVs, but does not seem to follow this pattern when assessing FAs of BAVM.
		Computer Number: 98 1627. Quantitative Magnetic Resonance Imaging and Computational Analysis of Hemodynamics for Evaluating Internal Carotid Artery Stenosis View Presentation Video D. Braet, M. Lu, V. Dandu, H-L Lee, J. Richardson, N. Osborne, Y. Xie, C. A. Figueroa University of Michigan, Ann Arbor, United States Impact: This work highlights how percentage ICA stenosis does not account for physiological-relevant risks for stroke. We found a subset of patients not selected for surgery that may be at high risk of stroke. These data support larger follow-up prospective studies.
		Computer Number: 99 1628. Detection of Cardiac-Induced Volumetric Brain Tissue Pulsations and Compressions in a Post-Trauma Craniectomy Patient: An MRI Case Report View Presentation Video E. van Hulst, M. Báez-Yañez, A. Adams, E. van der Voort, G. J. Biessels, J. Zwanenburg University Medical Center Utrecht, Utrecht, Netherlands Impact: Clustering volumetric strain data from a craniectomy patient revealed the absence of a compression cluster, confirming the physiological basis of observed systolic brain tissue compressions in healthy volunteers. Furthermore, it highlights the crucial role of boundary conditions in brain pulsatility.
		Computer Number: 100 1629. Evaluation of compressed sensing and segmented acquisition techniques in head 3D TOF-MRA at 3T X. Mu, H. Li, P. Gao, W. Yan, F. Wu, W. Sheng, S. Wang Ankang Gaoxin Hospital, Ankang, China Impact: This study demonstrates that increasing the acceleration factor can significantly enhance the image quality of specific vascular regions while maintaining overall image quality and effectively reducing scan time.
		Computer Number: 101 1630. Optimization of Flip Angle in Arterial Spin Labeling-based Ultra-Short TE MRI for Brain MR Angiography View Presentation Video K. Fujimoto, K. Miyake, S. Okuchi, Y. Monzen, R. Imai, H. Kusahara, J. Fujimoto, Y. Fushimi, Y. Nakamoto Graduate School of Medicine, Kyoto University, Kyoto, Japan Impact: ASL-based MRA with Ultra-short TE sequence was examined with 1° FA increments and its relationship with vessel signals were quantitatively measured. This provides a guide for improving vessel visualization in UTE-MRA.
		Computer Number: 102 1631. Quantitative Assessment of Cerebral Arterial Morphology in Tanzanian Children with Sickle Cell Anaemia Using MR Angiography View Presentation Video M. Lee, M. Jakob, D. Saunders, F. Kirkham, K. Shmueli University College London, London, United Kingdom Impact: Automated morphological analysis of MR angiograms revealed significant alterations in cerebral arterial morphology in Tanzanian children with SCA, suggesting compensatory vascular adaptations. Applying this approach in other studies may improve understanding of brain vasculopathy in SCA and other diseases.
		Computer Number: 103 1632. Angiopathic Impact of Hypertension and Comorbidities in Healthy Individuals Revealed by Signal Intensity Gradient from TOF-MRA View Presentation Video C-H Lee, S-K Jeong, H. J. Kim, R. Rosenson, W. Yang, K-H Jung Ulsan University Hospital, Ulsan, Korea, Republic of Impact: Functional analysis using SIG, alongside vascular morphological status, may offer valuable insights into the arterial effects of vascular risk factors, particularly within intracranial cerebral arteries.
		Computer Number: 104 1633. Evaluating Cerebral Perfusion Changes in Acute Ischemic Stroke Patients After Enhanced External Counterpulsation Using ASL and IVIM Sequences View Presentation Video X. Liu, S. Wang, A. Zhang, Q. Wang, L. Liu The First Hospital of Qinhuangdao City Affiliated to Hebei Medical University, Qinhuangdao, China Impact: ASL and IVIM effectively assess cerebral perfusion and collateral circulation in AIS patients. These imaging techniques offer a novel, non-invasive method for evaluating the efficacy of EECP treatment, providing valuable insights into treatment-related changes in brain perfusion and clinical outcomes.
		Computer Number: 105 1634. Intracranial Vessel Wall Enhancement for Assessing Disease Activity and Neuropsychiatric Impairment in Systemic Lupus Erythematosus View Presentation Video X. Zhao, Y. Sun, W. Meng, S. Wang, L. Zhou The Second Hospital of Hebei Medical University, Shijiazhuang City, China Impact: Intracranial vessel wall enhancement scoring system could be easily used for physicians to assess disease activity and early detect neuropsychiatric impairment, thereby providing valuable insights for clinical diagnosis and evaluation in SLE patients.
		Computer Number: 106 1635. High-resolution MRI study of stroke recurrence in patients with symptomatic atherosclerotic middle cerebral artery occlusion Q. Wang, M. Tang, K. Ai, X. Lei, X. Zhang Shaanxi Provincial People's Hospital, Xi'an, China Impact: Plaque enhancement degree, incomplete anterior Circle of Willis circulation, and absent DTFV are independently linked to stroke recurrence in sAMCAO patients. HR-MRI evaluation of the occluded vessel aids in identifying imaging markers predictive of recurrence.
		Computer Number: 107 1636. Simultaneous Multiparametric Estimation of Arteriovenous Malformations Hemodynamics Using MR Fingerprinting ASL (MRF-ASL) View Presentation Video Z. Hu, D. Jiang, W. Shi, D. A. Lakhani, R. Xu, J. Huang, K. Nael, H. Lu, V. Yedavalli Johns Hopkins University School of Medicine, Baltimore, United States Impact: MRF-ASL enables detailed, non-invasive assessment of AVM hemodynamics, demonstrating superior sensitivity over pCASL for detecting high-flow AVM regions. Elevated aCBV values correlated with Spetzler-Martin grades, highlighting MRF-ASL's potential as a valuable tool for AVM treatment planning and monitoring.
		Computer Number: 1637. WITHDRAWN
		Computer Number: 108 1638. Improved CBF and BBB Water Exchange Asymmetry in Vascular Territories Following Cranioplasty: A DP-pCASL MRI Study View Presentation Video B. Ojogho, A. Abedi, D. Lee, X. Shao, J. Russin, C. Liu, D. Wang Laboratory of FMRI Technology (LOFT) Mark & Mary Stevens Neuroimaging and Informatics Institute Keck School of Medicine University of Southern California (USC), Los Angeles, United States Impact: This study suggests that cerebral perfusion markers may clarify mechanisms behind cognitive improvements after cranioplasty, potentially guiding future research into biomarkers for brain recovery and influencing clinical approaches to post-injury rehabilitation.
		Computer Number: 109 1639. Cost-Effectiveness of Magnetic Resonance Imaging for Guiding Intravenous Thrombolysis in Acute Ischemic Stroke View Presentation Video W. Kunz LMU Munich, Munich, Germany Impact: MRI-guided IVT is projected to provide long-term clinical benefit whilst also leading to cost-savings in the management of stroke patients with unknown onset. Based on the projected health and cost benefits, investments to support the required MRI infrastructure are justified.
		Computer Number: 110 1640. CVR Transfer Functional Analysis and multi-PLD pCASL MRI to examine vascular dynamics during subacute stroke recovery View Presentation Video V. Krishnamurthy, L. Krishnamurthy, P. Liu, C. Xu, A. Hillis, H. Lu Emory University, Atlanta, United States Impact: Given that stroke has a vascular etiology, characterizing the vascular remodeling and associated dynamics, especially during the subacute phase is crucial to developing effective stroke rehabilitation strategies. Advanced physiological MRI techniques designed for this purpose can significantly influence clinical practice.
		Computer Number: 111 1641. Assessing Cerebral Blood Flow Dynamics associated with TMS Neuromodulation using Arterial Spin Labeling View Presentation Video L. Schmitzer, S. Preis, M. Szillat, S. H. Kim, B. Meyer, G. Hoffmann, N. Sollmann, J. Kirschke, S. Schramm Klinikum Rechts der Isar, Munich, Germany Impact: These initial results suggest that both neuromodulation protocols, as well as TMS stimulation in general does not cause significant local changes in CBF. Other imaging parameters may be more suited to track neuromodulation effects

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