Global trends and research hotspots in esophageal strictures: A bibliometric study

Figure 1  Literature data screening process and technology roadmap.

Figure 2 Publication trends in the field of esophageal stricture during 2004 and 2023. A: Annual publication volume; B: Curves of growth trends.

Figure 3 Visualization of the origin country, institutions, authors, and journals of publications. A: The top 10 fruitful countries; B: Distribution map of collaboration between countries; C: The top 10 fruitful institutions; D: Distribution map of collaboration between institutions; E: The top 10 fruitful authors; F: Distribution map of collaboration between authors; G: The top 10 fruitful journals; H: The dual-map overlay of journals.

Figure 4 The citation and co-cited references network visualization map of references from 2004 to 2023. A: Most local cited references; B: The top 25 co-cited references with the strongest citation bursts from 2004 to 2023.

Figure 5 The co-occurrence network visualization map of keywords. A: Keywords co-occurrence network with different clusters; B: Keywords co-occurrence network with average publication year; C: Keywords density map according to the mean frequency of occurrences (orange indicated the highest frequency); D: Evolutionary trajectory of “keywords plus” terms over time.