Global Trend in Artificial Intelligence–Based Publications in Radiology From 2000 to 2018 : American Journal of Roentgenology : Vol. 213, No. 6 (AJR)

All publication searches were performed using a comprehensive central database (Web of Science Core Collection, Clarivate Analytics) that searches the world's leading scholarly journals and proceedings in the sciences and includes the MEDLINE and PubMed databases. From 2000 to 2018, all AI-related publications were selected using the following search terms: "artificial intelligence," "AI," "CNN," "CNNs," "ANN," "ANNs," "neural network," "neural networks," "machine learning," "deep learning," "computer learning," "support vector machine," "support vector machines," "Bayesian network," "Bayesian networks," "cluster analysis," "feature learning," "feature extraction," and "principal components analysis." Radiology-specific AI research was selected using the predefined database category "Radiology Nuclear Medicine Medical Imaging." The resulting publication database was then categorized by country of origin, funding agencies, organizations, publication type, and journal. Nine radiology subspecialty publications were evaluated using the following search terms.