Evidence map›Paper›PMID 22499844›Full record

ArticleAJNR. American journal of neuroradiology2012

Hemodynamic changes in patients with arteriovenous malformations assessed using high-resolution 3D radial phase-contrast MR angiography.

W Chang, M W Loecher, Y Wu, D B Niemann, B Ciske, B Aagaard-Kienitz, S Kecskemeti, K M Johnson, O Wieben, C Mistretta and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in AJNR. American journal of neuroradiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 1 pooled it
4.1field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

33 citing papers in PubMed, 1 synthesis or guideline pooled it, 75 citations in OpenAlex.

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  11. Brain arteriovenous malformation flow after stereotactic radiosurgery: Role of quantitative MRA.Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences · 2024
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 1 institution in 1 country.

W ChangDepartment of Medical Physics, University of Wisconsin, Madison, WI 53705, USA. wmchang2@wisc.edu
M W Loecher
Y Wu
D B Niemann
B Ciske
B Aagaard-Kienitz
S Kecskemeti
K M Johnson
O Wieben
C Mistretta
P Turski
University of Wisconsin–Madison · US

Funding

Phase Contrast Imaging using Isotropic ProjectionR01HL072260 · NHLBI · UNIVERSITY OF WISCONSIN-MADISON · PI WIEBEN, OLIVER · 2003 to 2012
$3.4M
Functional Magnetic Resonance Angiography (fMRA) of the BrainR21EB009441 · NIBIB · UNIVERSITY OF WISCONSIN-MADISON · PI TURSKI, PATRICK ALAN · 2009 to 2010
$399k
NHLBI NIH HHS R01 HL072260NIBIB NIH HHS R21 EB009441
6 · The paper itself

Abstract

background and purposeArteriovenous malformations have a high lifetime risk of hemorrhage; however, treatment carries a significant risk of morbidity and mortality, including permanent neurologic sequelae. WSS and other hemodynamic parameters are altered in patients with symptomatic AVMs, and analysis of hemodynamics may have value in stratifying patients into different risk groups. In this study, we examined hemodynamic data from patients with stable symptoms and those who presented with acute symptoms to identify trends which may help in risk stratification. MATERIALS AND

methodsPhase-contrast MRA using a radial readout (PC-VIPR) is a fast, high-resolution technique that can acquire whole-brain velocity-encoded angiograms with scan times of approximately 5 minutes. Ten patients with AVMs were scanned using PC-VIPR; velocity, area, flow, and WSS in vessels feeding the AVMs and normal contralateral vessels were calculated using velocity data from the phase-contrast acquisition.

resultsPatients with an asymptomatic presentation or mild symptoms (n = 4) had no significant difference in WSS in feeding vessels compared with normal contralateral vessels, whereas patients presenting with hemorrhage, severe headaches/seizures, or focal neurologic deficits (n = 6) had significantly higher WSS in feeding vessels compared with contralateral vessels.

conclusionsIn this study, we demonstrate that estimates of WSS and other hemodynamic parameters can be obtained noninvasively in patients with AVMs in clinically useful imaging times. Variation in WSS between feeders and normal vessels appears to relate to the clinical presentation of the patient. Further analysis of hemodynamic changes may improve characterization and staging of AVM patients, when combined with existing risk factors.

Indexed as

Cerebrovascular CirculationImaging, Three-DimensionalMagnetic Resonance AngiographyAdultBlood Flow VelocityCerebral ArteriesFemaleHumansImage Processing, Computer-AssistedIntracranial Arteriovenous MalformationsIntracranial HemorrhagesMaleMiddle AgedShear StrengthYoung Adult

Identifiers

PMID22499844
PMCPMC6278605
OpenAlexW2052052856

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.