Technologies for the investigation of CAD: association between scientific publications and clinical use.
BACKGROUND
Although some evidence suggests an association between a technology exposure in the literature and its dissemination in clinical practice, few studies have evaluated such association.


OBJECTIVE
To analyze whether the pattern of scientific publication on two competitive technologies used in the assessment of coronary artery disease (CAD) reflects what occurs in clinical practice.


METHODS
The number of scientific articles published annually in the medical literature (global scientific interest in technology) on two technologies used in the assessment of CAD was evaluated: electron beam computed tomography (EBCT) and multidetector computed tomography (MDCT). The number of countries that annually publish scientific articles about these technologies (geographic interest in the technology) was also analyzed.


RESULTS
The EBCT showed a peak of "global scientific interest" in 2001, with 127 published articles. After this peak, the "global scientific interest" decreased by around 50% in 2008. In opposition, the "global scientific interest" for MDCT progressively increased up to 2007, with 454 articles published in that year. The "geographic scientific interest" by EBCT showed a peak in 2002, with 14 countries publishing about this technology. After this peak, the "geographic scientific interest" decreased by almost 25% up to 2008, with 11 countries publishing about this technology. In opposition, the "geographic scientific interest" by MDCT progressively increased up to 2008, with 37 countries publishing articles about it.


CONCLUSIONS
The medical scientific literature is compatible with the substitution of EBCT by MDCT in the assessment of CAD.
Duarte
Paulo Schiavom
PS
Faculdade de Saúde Pública, USP, São Paulo, SP, Brasil. psduarte@usp.br
D015706:Bibliometrics; D035843:Biomedical Research / Q000706:statistics & numerical data; D020811:Biomedical Technology / Q000706:statistics & numerical data*; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging*; D016206:Databases, Bibliographic; D006801:Humans; D010506:Periodicals as Topic / Q000706:statistics & numerical data; D010818:Practice Patterns, Physicians'; D011857:Radiographic Image Interpretation, Computer-Assisted; D013673:Technology Assessment, Biomedical; D014057:Tomography, X-Ray Computed / Q000379:methods / Q000592:standards*