Evidence map›Paper›PMID 29790017›Full record

ArticleJournal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology2020

Machine learning in the integration of simple variables for identifying patients with myocardial ischemia.

Luis Eduardo Juarez-Orozco, Remco J J Knol, Carlos A Sanchez-Catasus, Octavio Martinez-Manzanera, Friso M van der Zant, Juhani Knuuti

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Article in Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing 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

29 citing papers in PubMed.

  1. Review
  2. Artificial Intelligence in Nuclear Cardiology.Journal of clinical medicine · 2025
    Review
  3. Article
  4. Review
  5. Review
  6. Artificial intelligence: Applications in cardio-oncology and potential impact on racial disparities.American heart journal plus : cardiology research and practice · 2024
    Article
  7. Review
  8. Artificial Intelligence in Metabolomics: A Current Review.Trends in analytical chemistry : TRAC · 2024
    Article
  9. Review
  10. Article
  11. Article
  12. Hybridizing machine learning in survival analysis of cardiac PET/CT imaging.Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2023
    Article
  13. Review
  14. Article
  15. Review
  16. Development and validation of ischemia risk scores.Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2023
    Article
  17. Developing a framework for evaluating and comparing risk models.Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2023
    Article
  18. A highly predictive cardiac positron emission tomography (PET) risk score for 90-day and one-year major adverse cardiac events and revascularization.Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2023
    Article
  19. Machine learning to predict abnormal myocardial perfusion from pre-test features.Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2022
    Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Luis Eduardo Juarez-OrozcoTurku PET Centre, University of Turku and Turku University Hospital, Kiinamyllynkatu 4-8, 20520, Turku, Finland. l.e.juarez.orozco@gmail.com.
Remco J J KnolCardiac Imaging Division Alkmaar, Department of Nuclear Medicine, Northwest Clinics, Alkmaar, The Netherlands.
Carlos A Sanchez-CatasusNuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
Octavio Martinez-ManzaneraDepartment of Neurology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
Friso M van der ZantCardiac Imaging Division Alkmaar, Department of Nuclear Medicine, Northwest Clinics, Alkmaar, The Netherlands.
Juhani KnuutiTurku PET Centre, University of Turku and Turku University Hospital, Kiinamyllynkatu 4-8, 20520, Turku, Finland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundA significant number of variables are obtained when characterizing patients suspected with myocardial ischemia or at risk of MACE. Guidelines typically use a handful of them to support further workup or therapeutic decisions. However, it is likely that the numerous available predictors maintain intrinsic complex interrelations. Machine learning (ML) offers the possibility to elucidate complex patterns within data to optimize individual patient classification. We evaluated the feasibility and performance of ML in utilizing simple accessible clinical and functional variables for the identification of patients with ischemia or an elevated risk of MACE as determined through quantitative PET myocardial perfusion reserve (MPR).

methods1,234 patients referred to Nitrogen-13 ammonia PET were analyzed. Demographic (4), clinical (8), and functional variables (9) were retrieved and input into a cross-validated ML workflow consisting of feature selection and modeling. Two PET-defined outcome variables were operationalized: (1) any myocardial ischemia (regional MPR < 2.0) and (2) an elevated risk of MACE (global MPR < 2.0). ROC curves were used to evaluate ML performance.

results16 features were included for boosted ensemble ML. ML achieved an AUC of 0.72 and 0.71 in identifying patients with myocardial ischemia and with an elevated risk of MACE, respectively. ML performance was superior to logistic regression when the latter used the ESC guidelines risk models variables for both PET-defined labels (P < .001 and P = .01, respectively).

conclusionsML is feasible and applicable in the evaluation and utilization of simple and accessible predictors for the identification of patients who will present myocardial ischemia and an elevated risk of MACE in quantitative PET imaging.

Indexed as

Machine LearningMyocardial Perfusion ImagingPositron-Emission TomographyAgedFeasibility StudiesFemaleHumansMaleMiddle AgedMyocardial IschemiaNitrogen RadioisotopesPredictive Value of TestsRetrospective StudiesROC CurveNitrogen-13Nitrogen RadioisotopesMachine learningmyocardial ischemiaPETrisk of MACE

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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.