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Cardiac CT research: exponential growth
Michael W Itagaki1, Robert D Suh, Jonathan G Goldin
1Department of Radiological Sciences, David Geffen School of Medicine at UCLA, Ronald Reagan UCLA Medical Center, 757 Westwood Plaza, 1st Floor, Los Angeles, CA 90095, USA. mitagaki@mednet.ucla.edu
Insights
Cardiac CT research is growing exponentially, with both radiologists and cardiologists contributing significantly. Their contributions vary by research type and country, potentially impacting future clinical use.
Area of Science:
- Cardiology
- Radiology
- Medical Imaging
Background:
- Cardiac computed tomographic (CT) imaging has seen a substantial rise in research output.
- Understanding the trends and contributors in cardiac CT research is crucial for its advancement.
Purpose of the Study:
- To evaluate the growth trajectory of cardiac CT research.
- To determine the relative contributions of radiologists and cardiologists to this research.
Main Methods:
- A retrospective observational study analyzing public data from the MEDLINE database (1996-2006).
- Inclusion criteria focused on articles related to cardiac CT imaging.
- Data on publication date, journal, author specialty, country, and article type were extracted and analyzed using regression analysis.
Main Results:
- A total of 1270 articles were identified, showing a 15.4-fold increase in publications over the decade, with an annual exponential growth rate of 28%.
- The United States, Germany, Japan, and The Netherlands were the leading countries in cardiac CT research.
- While radiologists published more articles overall, cardiologists led in case reports and clinical trials, with contributions varying by country.
Conclusions:
- Cardiac CT research is experiencing exponential growth, primarily concentrated in a few key countries.
- Both radiologists and cardiologists are vital contributors, with their specific roles differing based on research methodology and geographical location.
- These variations in research contributions may influence the future adoption of cardiac CT in clinical practice.
Purpose:
To evaluate the increase in cardiac x-ray computed tomographic (CT) research and the relative contributions of radiologists and cardiologists.
Materials And Methods:
This observational study of public data was exempt from institutional review board approval. The National Library of Medicine MEDLINE database was searched for articles published between 1996 and 2006 in which CT was used to acquire images of the heart. The date and journal of publication, authors' specialty and country, and article type were recorded. Trends were evaluated by using regression analysis, with P < or = .05 indicating a significant difference.
Results:
A total of 1270 articles were identified. Basic science research articles, review articles, case reports, and reports of clinical trials constituted 38%, 19%, 11%, and 7% of the total, respectively. The number of journal articles increased 15.4-fold and increased exponentially at a rate of 28% per year (P < .001). An exponential increase was seen in the number of basic science articles (P < .001), review articles (P < .001), case reports (P < .001), and reports of clinical trials (P < .001). Articles from the United States (n = 464), Germany (n = 260), Japan (n = 125), and The Netherlands (n = 76) constituted 72.8% of the world total. Radiologists published more articles (378 vs 319) and more general research articles (143 vs 100) than did cardiologists; however, cardiologists published more case reports (50 vs 29) and clinical trials (22 vs 18) than did radiologists. Cardiologists wrote more articles than did radiologists in the United States (112 vs 95) and Japan (31 vs 22), whereas radiologists wrote more articles than did cardiologists in Germany (126 vs 53) and The Netherlands (34 vs 31).
Conclusion:
Cardiac CT research is increasing exponentially and is conducted primarily in four countries. Both radiologists and cardiologists make important contributions; however, contributions vary according to the research method used and the country in which the study was conducted. Both factors may influence future clinical adoption patterns.
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