Evidence map›Paper›PMID 34901207›Full record

ArticleFrontiers in cardiovascular medicine2021

Machine Learning Algorithms to Distinguish Myocardial Perfusion SPECT Polar Maps.

Erito Marques de Souza Filho, Fernando de Amorim Fernandes, Christiane Wiefels, Lucas Nunes Dalbonio de Carvalho, Tadeu Francisco Dos Santos, Alair Augusto Sarmet M D Dos Santos, Evandro Tinoco Mesquita, Flávio Luiz Seixas, Benjamin J W Chow, Claudio Tinoco Mesquita and 1 more

Open access · goldAbstract read
In one paragraph

Article in Frontiers in cardiovascular medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.4field-weighted citation impact, top 19% 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

9 citing papers in PubMed, 15 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Artificial Intelligence in Nuclear Cardiology.Journal of clinical medicine · 2025
    Review
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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

11 authors at 4 institutions in 2 countries.

Erito Marques de Souza FilhoPost-graduation in Cardiovascular Sciences, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil.
Fernando de Amorim FernandesPost-graduation in Cardiovascular Sciences, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil.
Christiane WiefelsPost-graduation in Cardiovascular Sciences, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil.
Lucas Nunes Dalbonio de CarvalhoDepartment of Languages and Technologies, Universidade Federal Rural do Rio de Janeiro, Rio de Janeiro, Brazil.
Tadeu Francisco Dos SantosPost-graduation in Cardiovascular Sciences, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil.
Alair Augusto Sarmet M D Dos SantosPost-graduation in Cardiovascular Sciences, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil.
Evandro Tinoco MesquitaPost-graduation in Cardiovascular Sciences, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil.
Flávio Luiz SeixasInstitute of Computing, Universidade Federal Fluminense, Rio de Janeiro, Brazil.
Benjamin J W ChowDepartment of Cardiac Image, University of Ottawa Heart Institute, Ottawa, ON, Canada.
Claudio Tinoco MesquitaPost-graduation in Cardiovascular Sciences, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil.
Ronaldo Altenburg GismondiPost-graduation in Cardiovascular Sciences, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil.
Universidade Federal Fluminense · BRUniversity of Ottawa · CAHospital Universitário Antônio Pedro · BRUniversidade Federal Rural do Rio de Janeiro · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Myocardial perfusion imaging (MPI) plays an important role in patients with suspected and documented coronary artery disease (CAD). Machine Learning (ML) algorithms have been developed for many medical applications with excellent performance. This study used ML algorithms to discern normal and abnormal gated Single Photon Emission Computed Tomography (SPECT) images. We analyzed one thousand and seven polar maps from a database of patients referred to a university hospital for clinically indicated MPI between January 2016 and December 2018. These studies were reported and evaluated by two different expert readers. The image features were extracted from a specific type of polar map segmentation based on horizontal and vertical slices. A senior expert reading was the comparator (gold standard). We used cross-validation to divide the dataset into training and testing subsets, using data augmentation in the training set, and evaluated 04 ML models. All models had accuracy >90% and area under the receiver operating characteristics curve (AUC) >0.80 except for Adaptive Boosting (AUC = 0.77), while all precision and sensitivity obtained were >96 and 92%, respectively. Random Forest had the best performance (AUC: 0.853; accuracy: 0,938; precision: 0.968; sensitivity: 0.963). ML algorithms performed very well in image classification. These models were capable of distinguishing polar maps remarkably into normal and abnormal.

Indexed as

coronary artery diseasemachine learningmyocardial perfusion imaging (MPI)polar mapsrandom forest

Identifiers

PMID34901207
PMCPMC8660123
OpenAlexW3212728405

What OpenQuestion holds

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Registered trials

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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.