Letter to the editor: “Utilization of CT and MRI scanning in Taiwan, 2000–2017”

Insights into Imaging

Table 1 Worldwide trends of CT use in the ED patients

Country	Setting	Study	Rates per 1000 ED visits			References
Country	Setting	Periods	2005	2009	2013	References
Taiwan	Single center	2005–2020	116	111–154	177	[2,3,4]
US	National	2004–2016	107–153	211	245	[5, 6]
Canada	Regional	2003–2009	55	82	NR	[7, 8]
Australia	Regional	2003–2015	61	64	82	[9]
Korea	Single center	2001–2010	220	224	NR	[10]
Iceland	Single center	2002–2017	34	59	87	[11]