Evidence map›Paper›PMID 17826323›Full record

ArticleJournal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology

Assessment of myocardial perfusion by dynamic O-15-labeled water PET imaging: validation of a new fast factor analysis.

Itaru Adachi, Oliver Gaemperli, Ines Valenta, Tiziano Schepis, Patrick T Siegrist, Valerie Treyer, Cyrill Burger, Koichi Morita, Philipp A Kaufmann

Abstract readEvaluation StudyValidation Study
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In one paragraph

Article in Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
–field-weighted citation impact
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

8 citing papers in PubMed.

  1. Trial
  2. SimultaneousEuropean journal of hybrid imaging · 2019
    Article
  3. Article
  4. Article
  5. Review
  6. Review
  7. Article
  8. 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

9 authors.

Itaru AdachiDepartment of Medical Radiology, University Hospital Zurich, Zurich, Switzerland.
Oliver Gaemperli
Ines Valenta
Tiziano Schepis
Patrick T Siegrist
Valerie Treyer
Cyrill Burger
Koichi Morita
Philipp A Kaufmann

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundFactor analysis (FA) is an established method for separating myocardium from blood pool by use of oxygen 15-labeled water and positron emission tomography for analyzing myocardial blood flow (MBF). Conventional FA methods generating images from sinograms (sinoFA) are time-consuming, whereas FA can be performed on the reconstructed images (reconFA) in a fraction of time. We validated the MBF values obtained by reconFA versus sinoFA. METHODS AND

resultsIn 23 volunteers (mean age, 26.6 +/- 3.4 years) MBF was calculated from sinoFA and reconFA and blindly reanalyzed 1 month later by the same observer. Intraobserver agreement and reconFA-versus-sinoFA agreement were assessed according to Bland and Altman (BA). Reproducibility proved excellent for global sinoFA (r = 0.968; P < .001; BA limits, -0.617 to 0.676 mL x min(-1) x g(-1)) and slightly superior for reconFA (r = 0.979; P < .001; BA limits, -0.538 to 0.558 mL x min(-1) x g(-1)), with wider limits of agreement for segmental MBF from sinoFA (r = 0.777; P < .001; BA limits, -1.676 to 1.656 mL x min(-1) x g(-1)) and reconFA (r = 0.844; P < .001; BA limits, -1.999 to 1.992 mL x min(-1) x g(-1)). In addition, sinoFA and reconFA showed excellent correlation (r = 0.975, P < .001) and agreement (BA limits, -0.528 to 0.648 mL x min(-1) x g(-1)) for global and segmental values (r = 0.955; P < .001; BA limits, -1.371 to 1.491 mL x min(-1) x g(-1)).

conclusionsUse of reconFA allows rapid and reliable quantitative MBF assessment with O-15-labeled water.

Indexed as

WaterAdultBlood Flow VelocityCoronary CirculationCoronary VesselsFemaleHumansImage Interpretation, Computer-AssistedMaleOxygen RadioisotopesPositron-Emission TomographyRadiopharmaceuticalsReproducibility of ResultsSensitivity and SpecificityOxygen RadioisotopesRadiopharmaceuticalsWater

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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.