Evidence map›Paper›PMID 38455720›Full record

ArticleFrontiers in cardiovascular medicine2024

Virtual calcium removal in calcified coronary arteries with photon-counting detector CT-first

Victor Mergen, Stéphane Rusek, Filippo Civaia, Philippe Rossi, Rengarajan Rajagopal, Eduardo Bättig, Robert Manka, Alessandro Candreva, Matthias Eberhard, Hatem Alkadhi

Open access · goldAbstract read
In one paragraph

Article in Frontiers in cardiovascular medicine, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
5.2field-weighted citation impact, top 4% 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

20 citing papers in PubMed, 28 citations in OpenAlex.

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  7. Cardiac imaging using photon counting CT - benefits, challenges and prospects.The international journal of cardiovascular imaging · 2026
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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

10 authors at 3 institutions in 4 countries.

Victor MergenDiagnostic and Interventional Radiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Stéphane RusekMonaco Cardiothoracic Center, Monaco, Monaco.
Filippo CivaiaMonaco Cardiothoracic Center, Monaco, Monaco.
Philippe RossiMonaco Cardiothoracic Center, Monaco, Monaco.
Rengarajan RajagopalDiagnostic and Interventional Radiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Eduardo BättigDiagnostic and Interventional Radiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Robert MankaDiagnostic and Interventional Radiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Alessandro CandrevaDepartment of Cardiology, University Heart Center, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Matthias EberhardDiagnostic and Interventional Radiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Hatem AlkadhiDiagnostic and Interventional Radiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
University Hospital of Zurich · CHScientific Centre of Monaco · MCUniversity of Zurich · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: To evaluate the feasibility and accuracy of quantification of calcified coronary stenoses using virtual non-calcium (VNCa) images in coronary CT angiography (CCTA) with photon-counting detector (PCD) CT compared with quantitative coronary angiography (QCA). Materials and methods: This retrospective, institutional-review board approved study included consecutive patients with calcified coronary artery plaques undergoing CCTA with PCD-CT and invasive coronary angiography between July and December 2022. Virtual monoenergetic images (VMI) and VNCa images were reconstructed. Diameter stenoses were quantified on VMI and VNCa images by two readers. 3D-QCA served as the standard of reference. Measurements were compared using Bland-Altman analyses, Wilcoxon tests, and intraclass correlation coefficients (ICC). Results: Thirty patients [mean age, 64 years ± 8 (standard deviation); 26 men] with 81 coronary stenoses from calcified plaques were included. Ten of the 81 stenoses (12%) had to be excluded because of erroneous plaque subtraction on VNCa images. Median diameter stenosis determined on 3D-QCA was 22% (interquartile range, 11%-35%; total range, 4%-88%). As compared with 3D-QCA, VMI overestimated diameter stenoses (mean differences -10%, Conclusion: First experience in mainly minimal to moderate stenoses suggests that virtual calcium removal in CCTA with PCD-CT, when feasible, has the potential to improve the quantification of calcified stenoses.

Indexed as

calcified plaquecoronary artery diseasecoronary CT angiography (CCTA)photon-counting detector CT (PCD-CT)spectral imagingvirtual non-calcium imaging

Identifiers

PMID38455720
PMCPMC10917906
OpenAlexW4392056111

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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.