Evidence map›Paper›PMID 34476186›Full record

ArticleQuantitative imaging in medicine and surgery2021

Dynamic chest radiography: clinical validation of ventilation and perfusion metrics derived from changes in radiographic lung density compared to nuclear medicine imaging.

Rie Tanaka, Isao Matsumoto, Masaya Tamura, Munehisa Takata, Shuhei Yoshida, Daisuke Saito, Yusuke Tanaka, Dai Inoue, Noriyuki Ohkura, Kazuo Kasahara

Open access · diamondAbstract read
In one paragraph

Article in Quantitative imaging in medicine and surgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.5field-weighted citation impact, top 11% 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

23 citing papers in PubMed, 29 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Deep learning-based lung volume estimation with dynamic chest radiography.Journal of applied clinical medical physics · 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 2 institutions in 1 country.

Rie TanakaCollege of Medical, Pharmaceutical & Health Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan.
Isao MatsumotoDepartment of Thoracic Surgery, Kanazawa University, Kanazawa, Ishikawa, Japan.
Masaya TamuraDepartment of Thoracic Surgery, Kanazawa University, Kanazawa, Ishikawa, Japan.
Munehisa TakataDepartment of Thoracic Surgery, Kanazawa University, Kanazawa, Ishikawa, Japan.
Shuhei YoshidaDepartment of Thoracic Surgery, Kanazawa University, Kanazawa, Ishikawa, Japan.
Daisuke SaitoDepartment of Thoracic Surgery, Kanazawa University, Kanazawa, Ishikawa, Japan.
Yusuke TanakaDepartment of Thoracic Surgery, Kanazawa University, Kanazawa, Ishikawa, Japan.
Dai InoueDepartment of Radiology, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan.
Noriyuki OhkuraDepartment of Respiratory Medicine, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan.
Kazuo KasaharaDepartment of Respiratory Medicine, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan.
Kanazawa University · JPKanazawa University Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDynamic chest radiography (DCR) is a type of non-contrast-enhanced functional lung imaging with a dynamic flat-panel detector (FPD). This study aimed to assess the clinical significance of ventilation and perfusion metrics derived from changes in radiographic lung density on DCR in comparison to nuclear medicine imaging-derived metrics.

methodsDCR images of 42 lung cancer patients were sequentially obtained during respiration using a dynamic FPD imaging system. For each subdivided lung region, the maximum change in the averaged pixel value (Δ

resultsWe found a moderate correlation between Δ

conclusionsDCR-derived ventilation and perfusion metrics correlated reasonably well with nuclear medicine imaging findings in lung subdivisions, suggesting that DCR could provide useful information on pulmonary function without the use of radioactive contrast agents.

Indexed as

Diagnostic imagingperfusionradiographythoraxventilation

Identifiers

PMID34476186
PMCPMC8339647
OpenAlexW3169406571

What OpenQuestion holds

Textmetadata
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.