ArticleClinical imaging2020
The bullseye sign: A variant of the reverse halo sign in COVID-19 pneumonia.
Article in Clinical imaging, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.
What it found
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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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
10 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Do COVID-19 CT features vary between patients from within and outside mainland China? Findings from a meta-analysis.Frontiers in public health · 2022Pooled it
- Is target sign (bull's eye appearance) associated with adverse outcomes in COVID-19 patients? A case series and literature review.Caspian journal of internal medicine · 2022Article
- Radiological Findings in SARS-CoV-2 Viral Pneumonia Compared to Other Viral Pneumonias: A Single-Centre Study.The Canadian journal of infectious diseases & medical microbiology = Journal canadien des maladies infectieuses et de la microbiologie medicale · 2022Article
- COVID-19 Pneumonia Presenting with Multiple Nodules Mimicking Metastases: An Atypical Case.Journal of the Belgian Society of Radiology · 2022Article
- Simultaneous presence of the "bullseye" and "reversed halo" sign at CT of COVID-19 pneumonia: A case report.Radiology case reports · 2021Article
- "Pulmonary target sign" as a diagnostic feature in chest computed tomography of COVID-19.World journal of radiology · 2021Article
- COVID-19 imaging: Diagnostic approaches, challenges, and evolving advances.World journal of radiology · 2021Review
- Single, unilateral halo sign in COVID-19 pneumonia.Clinical imaging · 2021Article
- Imaging of Coronavirus Disease 2019 Infection From Head to Toe: A Primer for the Radiologist.Current problems in diagnostic radiologyReview
- Does COVID-19 pneumonia signify secondary organizing pneumonia?: A narrative review comparing the similarities between these two distinct entities.Heart & lung : the journal of critical careReview
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The predominant pulmonary imaging findings on chest CT in the novel 2019 coronavirus infection (COVID-19) are bilateral ground glass opacities. The reverse halo sign is uncommon. This is a report of the new "bullseye sign," which is considered a variant of the reverse halo sign and favored to represent a focus of organizing pneumonia. The specificity of this finding is unclear, however its presence should alert radiologists to the possibility of COVID-19 infection.
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Registered trials
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.