Evidence map›Paper›PMID 33184068›Full record

ArticleAJNR. American journal of neuroradiology2021

Effects of Acquisition Parameter Modifications and Field Strength on the Reproducibility of Brain Perfusion Measurements Using Arterial Spin-Labeling.

K P A Baas, J Petr, J P A Kuijer, A J Nederveen, H J M M Mutsaerts, K C C van de Ven

Abstract readClinical Study
In one paragraph

Article in AJNR. American journal of neuroradiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

12 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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

6 authors.

K P A BaasFrom the Department of Radiology and Nuclear Medicine (K.P.A.B., A.J.N.), Amsterdam University Medical Center, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands k.p.baas@amsterdamumc.nl.ORCID 0000-0001-7902-9241
J PetrInstitute of Radiopharmaceutical Cancer Research (J.P.), Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.ORCID 0000-0002-3201-6002
J P A KuijerDepartment of Radiology and Nuclear Medicine (J.P.A.K., H.J.M.M.M.), Amsterdam University Medical Center, VU University Medical Center, Amsterdam, the Netherlands.ORCID 0000-0002-4181-0427
A J NederveenFrom the Department of Radiology and Nuclear Medicine (K.P.A.B., A.J.N.), Amsterdam University Medical Center, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands.ORCID 0000-0002-5477-973X
H J M M MutsaertsDepartment of Biomedical Engineering (J.P., H.J.M.M.M.), Institute Hall, Rochester Institute of Technology, Rochester, New York.ORCID 0000-0003-0894-0307
K C C van de VenBIU MR (K.C.C.v.d.V.), Philips Healthcare, Best, the Netherlands.ORCID 0000-0002-2751-6213

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeAlthough the added diagnostic value of arterial spin-labeling is shown in various cerebral pathologies, its use in clinical practice is limited. To encourage clinical adoption of ASL, we investigated the reproducibility of CBF measurements and the effects of variations in acquisition parameters compared to the recommended ASL implementation. MATERIALS AND

methodsThirty-four volunteers (mean age, 57.8 ± 17.0 years; range, 22-80 years) underwent two separate sessions (1.5T and 3T scanners from a single vendor) using a 15-channel head coil. Both sessions contained repeated 3D and 2D pseudocontinuous arterial spin-labeling scans using vendor-recommended acquisition parameters (recommendation paper-based), followed by three 3D pseudocontinuous arterial spin-labeling scans, two with postlabeling delays of 1600  and 2000 ms and one with increased spatial resolution. All scans were single postlabeling delay. Intrasession (identical acquisitions, scanned five minutes apart) and intersession (first 2D and 3D acquisitions of two sessions) reproducibility was examined as well as the effect of parameter variations on CBF.

resultsIntrasession CBF reproducibility was similar across image readouts and field strengths (within-subject coefficient of variation between 4.0% and 6.7%). Intersession within-subject coefficient of variation ranged from 6.6% to 14.8%. At 3T, the 3D acquisition with a higher spatial resolution resulted in less mixing of GM and WM signal, thus decreasing the bias in GM CBF between the 2D and 3D acquisitions (ΔCBF = 2.49 mL/100g/min [

conclusionsArterial spin-labeling imaging is reproducible at both field strengths, and the reproducibility is not significantly correlated with age. Furthermore, 3T tolerates more acquisition parameter variations and allows more extensive optimizations so that 3D and 2D acquisitions can be compared.

Indexed as

AdultAgedAged, 80 and overBrainCerebrovascular CirculationElectron Spin Resonance SpectroscopyFemaleHumansImaging, Three-DimensionalMagnetic Resonance ImagingMaleMiddle AgedNeuroimagingPerfusion ImagingReproducibility of ResultsSpin LabelsSpin Labels

Identifiers

PMID33184068
PMCPMC7814799

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Registered trials

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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.