Evidence map›Paper›PMID 34446812›Full record

ArticleScientific reports2021

Radiomics-based machine learning differentiates "ground-glass" opacities due to COVID-19 from acute non-COVID-19 lung disease.

Andrea Delli Pizzi, Antonio Maria Chiarelli, Piero Chiacchiaretta, Cristina Valdesi, Pierpaolo Croce, Domenico Mastrodicasa, Michela Villani, Stefano Trebeschi, Francesco Lorenzo Serafini, Consuelo Rosa and 10 more

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
3.7field-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

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

  1. Pooled it
  2. CT-based radiomics nomogram for distinguishingTranslational pediatrics · 2026
    Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Sansoninto-induced Lung Injury.Internal medicine (Tokyo, Japan) · 2022
    Article
  12. Article
  13. Review
  14. Review
  15. Article
  16. Article
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

20 authors at 3 institutions in 3 countries.

Andrea Delli PizziDepartment of Neuroscience, Imaging and Clinical Sciences, "G. d'Annunzio" University, Chieti, Italy.
Antonio Maria ChiarelliDepartment of Neuroscience, Imaging and Clinical Sciences, "G. d'Annunzio" University, Chieti, Italy.
Piero ChiacchiarettaCenter of Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy. p.chiacchiaretta@unich.it.ORCID 0000-0003-1089-9809
Cristina ValdesiDepartment of Radiology, "Santissima Annunziata" Hospital, "G. d'Annunzio" University of Chieti, Via dei Vestini, 66100, Chieti, Italy.
Pierpaolo CroceDepartment of Neuroscience, Imaging and Clinical Sciences, "G. d'Annunzio" University, Chieti, Italy.
Domenico MastrodicasaDepartment of Radiology, Stanford University School of Medicine, Stanford, CA, USA.
Michela VillaniDepartment of Radiology, "Santissima Annunziata" Hospital, "G. d'Annunzio" University of Chieti, Via dei Vestini, 66100, Chieti, Italy.
Stefano TrebeschiDepartment of Radiology, Netherlands Cancer Institute, Amsterdam, The Netherlands.
Francesco Lorenzo SerafiniDepartment of Neuroscience, Imaging and Clinical Sciences, "G. d'Annunzio" University, Chieti, Italy.
Consuelo RosaDepartment of Radiation Oncology, "Santissima Annunziata" Hospital, "G. d'Annunzio" University of Chieti, Via Dei Vestini, 66100, Chieti, Italy.
Giulio CoccoUnit of Ultrasound in Internal Medicine, Department of Medicine and Science of Aging, "G. D'Annunzio" University, Chieti, Italy.
Riccardo LubertiDepartment of Radiology, "Santissima Annunziata" Hospital, "G. d'Annunzio" University of Chieti, Via dei Vestini, 66100, Chieti, Italy.
Sabrina ConteDepartment of Radiology, "Santissima Annunziata" Hospital, "G. d'Annunzio" University of Chieti, Via dei Vestini, 66100, Chieti, Italy.
Lucia MazzamurroDepartment of Radiology, "Santissima Annunziata" Hospital, "G. d'Annunzio" University of Chieti, Via dei Vestini, 66100, Chieti, Italy.
Manuela MereuDepartment of Radiology, "Santissima Annunziata" Hospital, "G. d'Annunzio" University of Chieti, Via dei Vestini, 66100, Chieti, Italy.
Rosa Lucia PateaDepartment of Radiology, "Santissima Annunziata" Hospital, "G. d'Annunzio" University of Chieti, Via dei Vestini, 66100, Chieti, Italy.
Valentina PanaraDepartment of Radiology, "Santissima Annunziata" Hospital, "G. d'Annunzio" University of Chieti, Via dei Vestini, 66100, Chieti, Italy.
Stefano MarinariDepartment of Pneumology, "Santissima Annunziata" Hospital, "G. d'Annunzio" University of Chieti, Via Dei Vestini, 66100, Chieti, Italy.
Jacopo VecchietClinic of Infectious Diseases, Department of Medicine and Science of Aging, University 'G. d'Annunzio' Chieti-Pescara, 66100, Chieti, Italy.
Massimo CauloDepartment of Neuroscience, Imaging and Clinical Sciences, "G. d'Annunzio" University, Chieti, Italy.
University of Chieti-Pescara · ITStanford University · USThe Netherlands Cancer Institute · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Ground-glass opacities (GGOs) are a non-specific high-resolution computed tomography (HRCT) finding tipically observed in early Coronavirus disesase 19 (COVID-19) pneumonia. However, GGOs are also seen in other acute lung diseases, thus making challenging the differential diagnosis. To this aim, we investigated the performance of a radiomics-based machine learning method to discriminate GGOs due to COVID-19 from those due to other acute lung diseases. Two sets of patients were included: a first set of 28 patients (COVID) diagnosed with COVID-19 infection confirmed by real-time polymerase chain reaction (RT-PCR) between March and April 2020 having (a) baseline HRCT at hospital admission and (b) predominant GGOs pattern on HRCT; a second set of 30 patients (nCOVID) showing (a) predominant GGOs pattern on HRCT performed between August 2019 and April 2020 and (b) availability of final diagnosis. Two readers independently segmented GGOs on HRCTs using a semi-automated approach, and radiomics features were extracted using a standard open source software (PyRadiomics). Partial least square (PLS) regression was used as the multivariate machine-learning algorithm. A leave-one-out nested cross-validation was implemented. PLS β-weights of radiomics features, including the 5% features with the largest β-weights in magnitude (top 5%), were obtained. The diagnostic performance of the radiomics model was assessed through receiver operating characteristic (ROC) analysis. The Youden's test assessed sensitivity and specificity of the classification. A null hypothesis probability threshold of 5% was chosen (p < 0.05). The predictive model delivered an AUC of 0.868 (Youden's index = 0.68, sensitivity = 93%, specificity 75%, p = 4.2 × 10

Indexed as

AgedAged, 80 and overCOVID-19COVID-19 Nucleic Acid TestingCOVID-19 TestingFemaleHumansLungMachine LearningMaleMiddle AgedRadiometryRetrospective StudiesROC CurveSARS-CoV-2Sensitivity and Specificity

Identifiers

PMID34446812
PMCPMC8390673
OpenAlexW3195269283

What OpenQuestion holds

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LicenceCC BY
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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.