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. 2023 Aug;33(8):5653-5663.
doi: 10.1007/s00330-023-09495-2. Epub 2023 Feb 23.

Who publishes imaging articles in non-imaging journals? A large sample data-mining study

Augustin Gaudemer  1   2 , Adrien Haegel  3 , Marco Dioguardi Burgio  1 , Valérie Vilgrain  1 , Jules Grégory  1   4 , Maxime Ronot  5   6
Affiliations

Who publishes imaging articles in non-imaging journals? A large sample data-mining study

Augustin Gaudemer et al. Eur Radiol. 2023 Aug.

Abstract

Objectives: To assess the weight of imaging and imaging specialists (i.e., affiliated to a radiology/nuclear medicine department) in publications in non-imaging journals.

Methods: All articles indexed in English on the Embase database between 1989 and 2019 were extracted. The number and affiliation of authors were determined. A naive Bayesian classifier algorithm was trained to classify abstracts as "imaging" or "non-imaging." The main outcome was the number and position of imaging specialists in the authorship of imaging articles published in non-imaging journals. Analyses per medical specialties and per journal impact factor (IF) were performed.

Results: A total of 15,787,825 articles were included with 968,259 (6%) "imaging" articles. The proportion of imaging articles increased over time (+ 370%), quicker than the overall academic output. The proportion of imaging specialist among authors grew from 0.58% in 1989-1994 to 1.54% in 2015-2019. About 20% of imaging articles had ≥ 1 imaging specialist among authors. The proportion of imaging articles decreased with the IF (7.3% for IF 0-2.5 vs. 5.1% for IF > 10, p < 0.001), but the proportion of imaging specialist authors in imaging papers with ≥ 1 imaging specialist author increased with the IF (40% for IF 0-2.5, 53% for IF > 10, p < 0.001). There was significant variability across medical specialties.

Conclusions: The weight of imaging articles and imaging specialist among authors in non-imaging journals has increased over time but remains limited. Most of the authors of imaging publications are not imaging specialists. Imaging specialists among authors in imaging papers are associated with a greater IF.

Key points: • The proportion of imaging specialist authors in non-imaging journals, though small, has increased significantly. • Marked differences are observed according to medical specialties and the reputation/impact factor of the journal. • Collaboration between imaging specialists and non-specialists is associated with publication in higher impact journals.

Keywords: Bibliometrics; Data mining; Diagnostic imaging; Nuclear medicine.

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