Evidence map›Paper›PMID 36304574›Full record

ArticleFrontiers in physiology2022

Contrastive learning and subtyping of post-COVID-19 lung computed tomography images.

Frank Li, Xuan Zhang, Alejandro P Comellas, Eric A Hoffman, Tianbao Yang, Ching-Long Lin

Open access · goldAbstract read
In one paragraph

Article in Frontiers in physiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.6field-weighted citation impact, top 30% 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

5 citing papers in PubMed, 5 citations in OpenAlex.

  1. Article
  2. From Stagnation to Strategy: Challenges in Advancing Long COVID Research.Journal of evaluation in clinical practice · 2025
    Review
  3. Investigating distributions of inhaled aerosols in the lungs of post-COVID-19 clusters through a unified imaging and modeling approach.European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences · 2024
    Article
  4. Article
  5. 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

6 authors at 1 institution in 1 country.

Frank LiRoy J. Carver Department of Biomedical Engineering, University of Iowa, Iowa City, IA, United States.
Xuan ZhangIIHR-Hydroscience and Engineering, University of Iowa, Iowa City, IA, United States.
Alejandro P ComellasDepartment of Internal Medicine, University of Iowa, Iowa City, IA, United States.
Eric A HoffmanRoy J. Carver Department of Biomedical Engineering, University of Iowa, Iowa City, IA, United States.
Tianbao YangDepartment of Computer Science, University of Iowa, Iowa City, IA, United States.
Ching-Long LinRoy J. Carver Department of Biomedical Engineering, University of Iowa, Iowa City, IA, United States.
University of Iowa · US

Funding

Iowa Lung Imaging Training ProgramT32HL144461 · NHLBI · UNIVERSITY OF IOWA · PI HOFFMAN, ERIC ALFRED, REINHARDT, JOSEPH M · 2019 to 2023
$1.6M
NHLBI NIH HHS T32 HL144461
6 · The paper itself

Abstract

Patients who recovered from the novel coronavirus disease 2019 (COVID-19) may experience a range of long-term symptoms. Since the lung is the most common site of the infection, pulmonary sequelae may present persistently in COVID-19 survivors. To better understand the symptoms associated with impaired lung function in patients with post-COVID-19, we aimed to build a deep learning model which conducts two tasks: to differentiate post-COVID-19 from healthy subjects and to identify post-COVID-19 subtypes, based on the latent representations of lung computed tomography (CT) scans. CT scans of 140 post-COVID-19 subjects and 105 healthy controls were analyzed. A novel contrastive learning model was developed by introducing a lung volume transform to learn latent features of disease phenotypes from CT scans at inspiration and expiration of the same subjects. The model achieved 90% accuracy for the differentiation of the post-COVID-19 subjects from the healthy controls. Two clusters (C1 and C2) with distinct characteristics were identified among the post-COVID-19 subjects. C1 exhibited increased air-trapping caused by small airways disease (4.10%,

Indexed as

cluster analysiscomputed tomographycontrastive learninglong CovidPASCpost-COVID-19small airways disease

Identifiers

PMID36304574
PMCPMC9593072
OpenAlexW4304185156

What OpenQuestion holds

Textmetadata
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.