Quantitative magnetic resonance angiography to assess post embolization hemodynamics following pipeline embolization

Introduction Delayed intraparenchymal hemorrhage is a known complication of the Pipeline Embolization device (PED); however, its etiology is unclear and some have suggested it is a flow related phenomenon. Quantitative magnetic resonance angiography (QMRA) serves as a powerful tool to collect and an...

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Bibliographic Details
Published in:Interventional neuroradiology 2022-04, Vol.28 (2), p.177-182
Main Authors: White, Timothy G, Ryu, Brendan, Shah, Kevin A, Turpin, Justin, Black, Karen, Link, Thomas, Dehdashti, Amir R, Katz, Jeffrey M, Woo, Henry H
Format: Article
Language:English
Subjects:
Cerebral Angiography
Embolization, Therapeutic - methods
Hemodynamics
Humans
Intracranial Aneurysm - diagnostic imaging
Intracranial Aneurysm - therapy
Magnetic Resonance Angiography
Original
Retrospective Studies
Treatment Outcome
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Summary:Introduction Delayed intraparenchymal hemorrhage is a known complication of the Pipeline Embolization device (PED); however, its etiology is unclear and some have suggested it is a flow related phenomenon. Quantitative magnetic resonance angiography (QMRA) serves as a powerful tool to collect and analyze hemodynamic data. We report a detailed characterization of short-term hemodynamics after PED placement. Methods Patients who underwent PED placement for a distal internal carotid artery (ICA) aneurysm between 2017 to 2019 with post embolization QMRA were reviewed. Aneurysm characteristics, flow volume rate (ml/min), mean, systolic, and diastolic flow velocities (cm/s), vessel diameter (mm), pulsatility index, Lindegaard ratio, and wall shear stress (WSS) were collected. Results A total of 67 patients were included. Post-procedure patients were found to have a significantly lower ICA flow on the side with flow diversion when compared to the side without flow diversion (218 vs. 236.3; P 2 cm was significantly lower when compared to the untreated side (187.7 vs. 240.4; P 
ISSN:1591-0199
2385-2011
DOI:10.1177/15910199211023650