Evidence map›Paper›PMID 34255159›Full record

ArticleEuropean radiology2022

Coronary calcium scoring potential of large field-of-view spectral photon-counting CT: a phantom study.

Niels R van der Werf, S Si-Mohamed, P A Rodesch, R W van Hamersvelt, M J W Greuter, S Boccalini, J Greffier, T Leiner, L Boussel, M J Willemink and 1 more

Open access · hybridAbstract read
In one paragraph

Article in European radiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
4.3field-weighted citation impact, top 5% 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

34 citing papers in PubMed, 66 citations in OpenAlex.

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  8. Photon-counting detector computed tomography in cardiac imaging.Netherlands heart journal : monthly journal of the Netherlands Society of Cardiology and the Netherlands Heart Foundation · 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 6 institutions in 3 countries.

Niels R van der Werf *Department of Radiology, University Medical Center Utrecht, Utrecht, The Netherlands. n.vanderwerf@erasmusmc.nl.ORCID http://orcid.org/0000-0003-0138-052X
S Si-Mohamed *Louis Pradel Cardiology Hospital, Hospices Civils de Lyon, Lyon, France.
P A RodeschLouis Pradel Cardiology Hospital, Hospices Civils de Lyon, Lyon, France.
R W van HamersveltDepartment of Radiology, University Medical Center Utrecht, Utrecht, The Netherlands.
M J W GreuterDepartment of Radiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
S BoccaliniLouis Pradel Cardiology Hospital, Hospices Civils de Lyon, Lyon, France.
J GreffierDepartment of medical imaging, Medical Imaging Group, Univ Montpellier, CHU Nimes, 2415, Nimes, EA, France.
T LeinerDepartment of Radiology, University Medical Center Utrecht, Utrecht, The Netherlands.
L BousselLouis Pradel Cardiology Hospital, Hospices Civils de Lyon, Lyon, France.
M J WilleminkDepartment of Radiology, Stanford University School of Medicine, Stanford, CA, USA.
P DouekLouis Pradel Cardiology Hospital, Hospices Civils de Lyon, Lyon, France.
Université Claude Bernard Lyon 1 · FRUniversity Medical Center Utrecht · NLErasmus MC · NLStanford University · USUniversité de Montpellier · FRUniversity Medical Center Groningen · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThe aim of the current study was, first, to assess the coronary artery calcium (CAC) scoring potential of spectral photon-counting CT (SPCCT) in comparison with computed tomography (CT) for routine clinical protocols. Second, improved CAC detection and quantification at reduced slice thickness were assessed.

methodsRaw data was acquired and reconstructed with several combinations of reduced slice thickness and increasing strengths of iterative reconstruction (IR) for both CT systems with routine clinical CAC protocols for CT. Two CAC-containing cylindrical inserts, consisting of CAC of different densities and sizes, were placed in an anthropomorphic phantom. A specific CAC was detectable when 3 or more connected voxels exceeded the CAC scoring threshold of 130 Hounsfield units (HU). For all reconstructions, total CAC detectability was compared between both CT systems. Significant differences in CAC quantification (Agatston and volume scores) were assessed with Mann-Whitney U tests. Furthermore, volume scores were compared with the known CAC physical.

resultsCAC scores for routine clinical protocols were comparable between SPCCT and CT. SPCCT showed 34% and 4% higher detectability of CAC for the small and large phantom, respectively. At reduced slice thickness, CAC detection increased by 142% and 169% for CT and SPCCT, respectively. In comparison with CT, volume scores from SPCCT were more comparable with the physical volume of the CAC.

conclusionCAC scores using routine clinical protocols are comparable between conventional CT and SPCCT. The increased spatial resolution of SPCCT allows for increased detectability and more accurate CAC volume estimation. KEY POINTS: • Coronary artery calcium scores using routine clinical protocols are comparable between conventional CT and spectral photon-counting CT. • In comparison with conventional CT, increased coronary artery calcium detectability was shown for spectral photon-counting CT due to increased spatial resolution. • Volumes scores were more accurately determined with spectral photon-counting CT.

Indexed as

CalciumCoronary Artery DiseaseCoronary VesselsHumansPhantoms, ImagingTomography, X-Ray ComputedCalciumCalciumCoronary vesselsImaging phantomsX-ray computed tomography

Identifiers

PMID34255159
PMCPMC8660747
OpenAlexW3179560770

What OpenQuestion holds

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LicenceCC BY
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.