ArticleRadiology2020
Frequency and Distribution of Chest Radiographic Findings in Patients Positive for COVID-19.
2 registry-linked trialsOpen access · greenAbstract readMulticenter Study
In one paragraph
Article in Radiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 771 papers, 2 of them syntheses that pooled it.
0numbers the graph read from it
0cells of the map it votes in
771citing papers in PubMed, 2 pooled it
155.9field-weighted citation impact, top 1% of its field
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.
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.
Lung Ultrasound in COVID-19 Infection Screening for Patients With Indication of Emergency Surgery
Artificial Intelligence - SARS-CoV-2 Risk Evaluation
Who cites it
771 citing papers in PubMed, 2 syntheses or guidelines pooled it, 1,516 citations in OpenAlex.
- COVID-19 in Neonates with Positive RT-PCR Test. Systematic Review.Archives of medical research · 2022Pooled it
- Estimate false-negative RT-PCR rates for SARS-CoV-2. A systematic review and meta-analysis.European journal of clinical investigation · 2022Pooled it
- Phase IIB, Randomized, Double-Blind, Placebo-Controlled Clinical Trial of Intravenous Defibrotide for the Prevention and Treatment of Respiratory Distress and Cytokine Release Syndrome in COVID-19.European journal of haematology · 2026Trial
- Artificial intelligence-based model for COVID-19 prognosis incorporating chest radiographs and clinical data; a retrospective model development and validation study.The British journal of radiology · 2022Trial
- Transparent chest radiograph foundation model enables explainable human disease profiling.NPJ digital medicine · 2026Article
- TriNet-MoE: One New Neural Network Framework Based on Mixture of Experts for CXR-Based COVID-19 Detection.Journal of imaging informatics in medicine · 2026Article
- Letter to the Editor: Chest X-ray-based severity scores in COVID-19 - what do they tell us about oxygen needs?World journal of critical care medicine · 2026Article
- Externally Validated Deep Learning Analysis of Chest Radiographs for Differentiating COVID-19 and Viral Pneumonia.Diagnostics (Basel, Switzerland) · 2026Article
- Utilizing AI CAD for early pandemic screening in chest radiographs.Scientific reports · 2026Article
- Severity-dependent metabolic rewiring in COVID-19 based on untargeted metabolomic profiling of patient plasma.PloS one · 2026Article
- Predictive validity of the simplified Radiographic Assessment of Lung Edema score for mortality in critically ill patients with COVID-19.Frontiers in medicine · 2026Article
- High-Resolution Imaging Analysis of CT Severity Index in COVID-19 Patients: Impact of Age and SexCurrent medical imaging · 2026Article
- Multimodal prediction of persistent pulmonary nodules after COVID-19: radiomics feature integration with clinical and epidemiologic variables.Frontiers in medicine · 2026Article
- The impact of technical factors on the chest radiographic findings in COVID-19 pneumonia.Journal of the colleges of medicine of South Africa · 2026Article
- The post-COVID-19 pulmonary sequelae: manifestations, mechanisms and treatment strategies.Journal of thoracic disease · 2025Review
- SARS-CoV-2 Pneumonia: Advances in Diagnosis and Treatment.Microorganisms · 2025Review
- Assessing chest radiographic quality and the influence of COVID-19 pathology: the Australian experience.Journal of medical radiation sciences · 2025Article
- ACCREDIT: Validation of clinical score for progression of COVID-19 while hospitalized.Global epidemiology · 2025Article
- Prognostic Value of the Brixia Radiological Score in COVID-19 Patients: A Retrospective Study from Romania.Tropical medicine and infectious disease · 2025Article
- Artificial Intelligence Assessment of Chest Radiographs for COVID-19.Clinical lymphoma, myeloma & leukemia · 2025Article
711 more citing papers are in PubMed but not listed here.
Corrections and comments
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Authors and funding
16 authors at 3 institutions in 3 countries.
Ho Yuen Frank WongFrom the Departments of Radiology (H.Y.F.W., H.Y.S.L., C.S.Y.L., T.P.W.L.), Medicine (M.M.S.L., I.F.N.H.), and Microbiology (T.W.H.C.), Queen Mary Hospital, Hong Kong; Departments of Diagnostic Radiology (A.H.T.F., K.W.H.C., E.Y.P.L., M.D.K., M.Y.N.), Family Medicine and Primary Care (E.Y.F.W.), Pharmacology and Pharmacy (E.Y.F.W.), and Medicine (I.F.N.H.), University of Hong Kong, Room 406, Block K, Hong Kong; Department of Radiology, Pamela Youde Nethersole Eastern Hospital, Hong Kong (S.T.L.); Ruttonjee and Tang Shiu Kin Hospitals, Hong Kong (S.T.L.); Department of Radiology and Imaging, Queen Elizabeth Hospital, Hong Kong (T.W.Y.C., J.C.Y.L.) and Department of Medical Imaging, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China (M.Y.N.).ORCID 0000-0003-0818-8223
Hiu Yin Sonia LamFrom the Departments of Radiology (H.Y.F.W., H.Y.S.L., C.S.Y.L., T.P.W.L.), Medicine (M.M.S.L., I.F.N.H.), and Microbiology (T.W.H.C.), Queen Mary Hospital, Hong Kong; Departments of Diagnostic Radiology (A.H.T.F., K.W.H.C., E.Y.P.L., M.D.K., M.Y.N.), Family Medicine and Primary Care (E.Y.F.W.), Pharmacology and Pharmacy (E.Y.F.W.), and Medicine (I.F.N.H.), University of Hong Kong, Room 406, Block K, Hong Kong; Department of Radiology, Pamela Youde Nethersole Eastern Hospital, Hong Kong (S.T.L.); Ruttonjee and Tang Shiu Kin Hospitals, Hong Kong (S.T.L.); Department of Radiology and Imaging, Queen Elizabeth Hospital, Hong Kong (T.W.Y.C., J.C.Y.L.) and Department of Medical Imaging, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China (M.Y.N.).
Ambrose Ho-Tung FongFrom the Departments of Radiology (H.Y.F.W., H.Y.S.L., C.S.Y.L., T.P.W.L.), Medicine (M.M.S.L., I.F.N.H.), and Microbiology (T.W.H.C.), Queen Mary Hospital, Hong Kong; Departments of Diagnostic Radiology (A.H.T.F., K.W.H.C., E.Y.P.L., M.D.K., M.Y.N.), Family Medicine and Primary Care (E.Y.F.W.), Pharmacology and Pharmacy (E.Y.F.W.), and Medicine (I.F.N.H.), University of Hong Kong, Room 406, Block K, Hong Kong; Department of Radiology, Pamela Youde Nethersole Eastern Hospital, Hong Kong (S.T.L.); Ruttonjee and Tang Shiu Kin Hospitals, Hong Kong (S.T.L.); Department of Radiology and Imaging, Queen Elizabeth Hospital, Hong Kong (T.W.Y.C., J.C.Y.L.) and Department of Medical Imaging, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China (M.Y.N.).ORCID 0000-0002-4165-8293
Siu Ting LeungFrom the Departments of Radiology (H.Y.F.W., H.Y.S.L., C.S.Y.L., T.P.W.L.), Medicine (M.M.S.L., I.F.N.H.), and Microbiology (T.W.H.C.), Queen Mary Hospital, Hong Kong; Departments of Diagnostic Radiology (A.H.T.F., K.W.H.C., E.Y.P.L., M.D.K., M.Y.N.), Family Medicine and Primary Care (E.Y.F.W.), Pharmacology and Pharmacy (E.Y.F.W.), and Medicine (I.F.N.H.), University of Hong Kong, Room 406, Block K, Hong Kong; Department of Radiology, Pamela Youde Nethersole Eastern Hospital, Hong Kong (S.T.L.); Ruttonjee and Tang Shiu Kin Hospitals, Hong Kong (S.T.L.); Department of Radiology and Imaging, Queen Elizabeth Hospital, Hong Kong (T.W.Y.C., J.C.Y.L.) and Department of Medical Imaging, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China (M.Y.N.).ORCID 0000-0002-3135-9230
Thomas Wing-Yan ChinFrom the Departments of Radiology (H.Y.F.W., H.Y.S.L., C.S.Y.L., T.P.W.L.), Medicine (M.M.S.L., I.F.N.H.), and Microbiology (T.W.H.C.), Queen Mary Hospital, Hong Kong; Departments of Diagnostic Radiology (A.H.T.F., K.W.H.C., E.Y.P.L., M.D.K., M.Y.N.), Family Medicine and Primary Care (E.Y.F.W.), Pharmacology and Pharmacy (E.Y.F.W.), and Medicine (I.F.N.H.), University of Hong Kong, Room 406, Block K, Hong Kong; Department of Radiology, Pamela Youde Nethersole Eastern Hospital, Hong Kong (S.T.L.); Ruttonjee and Tang Shiu Kin Hospitals, Hong Kong (S.T.L.); Department of Radiology and Imaging, Queen Elizabeth Hospital, Hong Kong (T.W.Y.C., J.C.Y.L.) and Department of Medical Imaging, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China (M.Y.N.).ORCID 0000-0002-3737-5864
Christine Shing Yen LoFrom the Departments of Radiology (H.Y.F.W., H.Y.S.L., C.S.Y.L., T.P.W.L.), Medicine (M.M.S.L., I.F.N.H.), and Microbiology (T.W.H.C.), Queen Mary Hospital, Hong Kong; Departments of Diagnostic Radiology (A.H.T.F., K.W.H.C., E.Y.P.L., M.D.K., M.Y.N.), Family Medicine and Primary Care (E.Y.F.W.), Pharmacology and Pharmacy (E.Y.F.W.), and Medicine (I.F.N.H.), University of Hong Kong, Room 406, Block K, Hong Kong; Department of Radiology, Pamela Youde Nethersole Eastern Hospital, Hong Kong (S.T.L.); Ruttonjee and Tang Shiu Kin Hospitals, Hong Kong (S.T.L.); Department of Radiology and Imaging, Queen Elizabeth Hospital, Hong Kong (T.W.Y.C., J.C.Y.L.) and Department of Medical Imaging, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China (M.Y.N.).ORCID 0000-0002-3346-1896
Macy Mei-Sze LuiFrom the Departments of Radiology (H.Y.F.W., H.Y.S.L., C.S.Y.L., T.P.W.L.), Medicine (M.M.S.L., I.F.N.H.), and Microbiology (T.W.H.C.), Queen Mary Hospital, Hong Kong; Departments of Diagnostic Radiology (A.H.T.F., K.W.H.C., E.Y.P.L., M.D.K., M.Y.N.), Family Medicine and Primary Care (E.Y.F.W.), Pharmacology and Pharmacy (E.Y.F.W.), and Medicine (I.F.N.H.), University of Hong Kong, Room 406, Block K, Hong Kong; Department of Radiology, Pamela Youde Nethersole Eastern Hospital, Hong Kong (S.T.L.); Ruttonjee and Tang Shiu Kin Hospitals, Hong Kong (S.T.L.); Department of Radiology and Imaging, Queen Elizabeth Hospital, Hong Kong (T.W.Y.C., J.C.Y.L.) and Department of Medical Imaging, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China (M.Y.N.).ORCID 0000-0002-7150-9360
Jonan Chun Yin LeeFrom the Departments of Radiology (H.Y.F.W., H.Y.S.L., C.S.Y.L., T.P.W.L.), Medicine (M.M.S.L., I.F.N.H.), and Microbiology (T.W.H.C.), Queen Mary Hospital, Hong Kong; Departments of Diagnostic Radiology (A.H.T.F., K.W.H.C., E.Y.P.L., M.D.K., M.Y.N.), Family Medicine and Primary Care (E.Y.F.W.), Pharmacology and Pharmacy (E.Y.F.W.), and Medicine (I.F.N.H.), University of Hong Kong, Room 406, Block K, Hong Kong; Department of Radiology, Pamela Youde Nethersole Eastern Hospital, Hong Kong (S.T.L.); Ruttonjee and Tang Shiu Kin Hospitals, Hong Kong (S.T.L.); Department of Radiology and Imaging, Queen Elizabeth Hospital, Hong Kong (T.W.Y.C., J.C.Y.L.) and Department of Medical Imaging, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China (M.Y.N.).ORCID 0000-0002-9157-6982
Keith Wan-Hang ChiuFrom the Departments of Radiology (H.Y.F.W., H.Y.S.L., C.S.Y.L., T.P.W.L.), Medicine (M.M.S.L., I.F.N.H.), and Microbiology (T.W.H.C.), Queen Mary Hospital, Hong Kong; Departments of Diagnostic Radiology (A.H.T.F., K.W.H.C., E.Y.P.L., M.D.K., M.Y.N.), Family Medicine and Primary Care (E.Y.F.W.), Pharmacology and Pharmacy (E.Y.F.W.), and Medicine (I.F.N.H.), University of Hong Kong, Room 406, Block K, Hong Kong; Department of Radiology, Pamela Youde Nethersole Eastern Hospital, Hong Kong (S.T.L.); Ruttonjee and Tang Shiu Kin Hospitals, Hong Kong (S.T.L.); Department of Radiology and Imaging, Queen Elizabeth Hospital, Hong Kong (T.W.Y.C., J.C.Y.L.) and Department of Medical Imaging, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China (M.Y.N.).ORCID 0000-0002-7930-1193
Tom Wai-Hin ChungFrom the Departments of Radiology (H.Y.F.W., H.Y.S.L., C.S.Y.L., T.P.W.L.), Medicine (M.M.S.L., I.F.N.H.), and Microbiology (T.W.H.C.), Queen Mary Hospital, Hong Kong; Departments of Diagnostic Radiology (A.H.T.F., K.W.H.C., E.Y.P.L., M.D.K., M.Y.N.), Family Medicine and Primary Care (E.Y.F.W.), Pharmacology and Pharmacy (E.Y.F.W.), and Medicine (I.F.N.H.), University of Hong Kong, Room 406, Block K, Hong Kong; Department of Radiology, Pamela Youde Nethersole Eastern Hospital, Hong Kong (S.T.L.); Ruttonjee and Tang Shiu Kin Hospitals, Hong Kong (S.T.L.); Department of Radiology and Imaging, Queen Elizabeth Hospital, Hong Kong (T.W.Y.C., J.C.Y.L.) and Department of Medical Imaging, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China (M.Y.N.).ORCID 0000-0003-3434-7099
Elaine Yuen Phin LeeFrom the Departments of Radiology (H.Y.F.W., H.Y.S.L., C.S.Y.L., T.P.W.L.), Medicine (M.M.S.L., I.F.N.H.), and Microbiology (T.W.H.C.), Queen Mary Hospital, Hong Kong; Departments of Diagnostic Radiology (A.H.T.F., K.W.H.C., E.Y.P.L., M.D.K., M.Y.N.), Family Medicine and Primary Care (E.Y.F.W.), Pharmacology and Pharmacy (E.Y.F.W.), and Medicine (I.F.N.H.), University of Hong Kong, Room 406, Block K, Hong Kong; Department of Radiology, Pamela Youde Nethersole Eastern Hospital, Hong Kong (S.T.L.); Ruttonjee and Tang Shiu Kin Hospitals, Hong Kong (S.T.L.); Department of Radiology and Imaging, Queen Elizabeth Hospital, Hong Kong (T.W.Y.C., J.C.Y.L.) and Department of Medical Imaging, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China (M.Y.N.).ORCID 0000-0002-0627-5297
Eric Yuk Fai WanFrom the Departments of Radiology (H.Y.F.W., H.Y.S.L., C.S.Y.L., T.P.W.L.), Medicine (M.M.S.L., I.F.N.H.), and Microbiology (T.W.H.C.), Queen Mary Hospital, Hong Kong; Departments of Diagnostic Radiology (A.H.T.F., K.W.H.C., E.Y.P.L., M.D.K., M.Y.N.), Family Medicine and Primary Care (E.Y.F.W.), Pharmacology and Pharmacy (E.Y.F.W.), and Medicine (I.F.N.H.), University of Hong Kong, Room 406, Block K, Hong Kong; Department of Radiology, Pamela Youde Nethersole Eastern Hospital, Hong Kong (S.T.L.); Ruttonjee and Tang Shiu Kin Hospitals, Hong Kong (S.T.L.); Department of Radiology and Imaging, Queen Elizabeth Hospital, Hong Kong (T.W.Y.C., J.C.Y.L.) and Department of Medical Imaging, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China (M.Y.N.).ORCID 0000-0002-6275-1147
Ivan Fan Ngai HungFrom the Departments of Radiology (H.Y.F.W., H.Y.S.L., C.S.Y.L., T.P.W.L.), Medicine (M.M.S.L., I.F.N.H.), and Microbiology (T.W.H.C.), Queen Mary Hospital, Hong Kong; Departments of Diagnostic Radiology (A.H.T.F., K.W.H.C., E.Y.P.L., M.D.K., M.Y.N.), Family Medicine and Primary Care (E.Y.F.W.), Pharmacology and Pharmacy (E.Y.F.W.), and Medicine (I.F.N.H.), University of Hong Kong, Room 406, Block K, Hong Kong; Department of Radiology, Pamela Youde Nethersole Eastern Hospital, Hong Kong (S.T.L.); Ruttonjee and Tang Shiu Kin Hospitals, Hong Kong (S.T.L.); Department of Radiology and Imaging, Queen Elizabeth Hospital, Hong Kong (T.W.Y.C., J.C.Y.L.) and Department of Medical Imaging, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China (M.Y.N.).
Tina Poy Wing LamFrom the Departments of Radiology (H.Y.F.W., H.Y.S.L., C.S.Y.L., T.P.W.L.), Medicine (M.M.S.L., I.F.N.H.), and Microbiology (T.W.H.C.), Queen Mary Hospital, Hong Kong; Departments of Diagnostic Radiology (A.H.T.F., K.W.H.C., E.Y.P.L., M.D.K., M.Y.N.), Family Medicine and Primary Care (E.Y.F.W.), Pharmacology and Pharmacy (E.Y.F.W.), and Medicine (I.F.N.H.), University of Hong Kong, Room 406, Block K, Hong Kong; Department of Radiology, Pamela Youde Nethersole Eastern Hospital, Hong Kong (S.T.L.); Ruttonjee and Tang Shiu Kin Hospitals, Hong Kong (S.T.L.); Department of Radiology and Imaging, Queen Elizabeth Hospital, Hong Kong (T.W.Y.C., J.C.Y.L.) and Department of Medical Imaging, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China (M.Y.N.).ORCID 0000-0001-7153-1157
Michael D KuoFrom the Departments of Radiology (H.Y.F.W., H.Y.S.L., C.S.Y.L., T.P.W.L.), Medicine (M.M.S.L., I.F.N.H.), and Microbiology (T.W.H.C.), Queen Mary Hospital, Hong Kong; Departments of Diagnostic Radiology (A.H.T.F., K.W.H.C., E.Y.P.L., M.D.K., M.Y.N.), Family Medicine and Primary Care (E.Y.F.W.), Pharmacology and Pharmacy (E.Y.F.W.), and Medicine (I.F.N.H.), University of Hong Kong, Room 406, Block K, Hong Kong; Department of Radiology, Pamela Youde Nethersole Eastern Hospital, Hong Kong (S.T.L.); Ruttonjee and Tang Shiu Kin Hospitals, Hong Kong (S.T.L.); Department of Radiology and Imaging, Queen Elizabeth Hospital, Hong Kong (T.W.Y.C., J.C.Y.L.) and Department of Medical Imaging, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China (M.Y.N.).
Ming-Yen NgFrom the Departments of Radiology (H.Y.F.W., H.Y.S.L., C.S.Y.L., T.P.W.L.), Medicine (M.M.S.L., I.F.N.H.), and Microbiology (T.W.H.C.), Queen Mary Hospital, Hong Kong; Departments of Diagnostic Radiology (A.H.T.F., K.W.H.C., E.Y.P.L., M.D.K., M.Y.N.), Family Medicine and Primary Care (E.Y.F.W.), Pharmacology and Pharmacy (E.Y.F.W.), and Medicine (I.F.N.H.), University of Hong Kong, Room 406, Block K, Hong Kong; Department of Radiology, Pamela Youde Nethersole Eastern Hospital, Hong Kong (S.T.L.); Ruttonjee and Tang Shiu Kin Hospitals, Hong Kong (S.T.L.); Department of Radiology and Imaging, Queen Elizabeth Hospital, Hong Kong (T.W.Y.C., J.C.Y.L.) and Department of Medical Imaging, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China (M.Y.N.).ORCID 0000-0001-9533-3892
Maine Farmland Trust · USQueen Mary Hospital · CNPamela Youde Nethersole Eastern Hospital · CN
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background Current coronavirus disease 2019 (COVID-19) radiologic literature is dominated by CT, and a detailed description of chest radiography appearances in relation to the disease time course is lacking. Purpose To describe the time course and severity of findings of COVID-19 at chest radiography and correlate these with real-time reverse transcription polymerase chain reaction (RT-PCR) testing for severe acute respiratory syndrome coronavirus 2, or SARS-CoV-2, nucleic acid. Materials and Methods This is a retrospective study of patients with COVID-19 confirmed by using RT-PCR and chest radiographic examinations who were admitted across four hospitals and evaluated between January and March 2020. Baseline and serial chest radiographs (
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BetacoronavirusAdolescentAdultAgedAged, 80 and overClinical Laboratory TechniquesCoronavirus InfectionsCOVID-19COVID-19 TestingCOVID-19 VaccinesFemaleHumansMaleMiddle AgedPandemicsPneumonia, ViralCOVID-19 Vaccines
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NCT04661631ClinicalTrials.gov
NCT04834934ClinicalTrials.gov
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