Table 2.

Summary of x-ray equipment manufacturers extracted from DICOM metadata.

Dataset	Manufacturer (headquarters)	Number of CXRs
Hospital 1 inpatient test set (United States)	Agfa (Mortsel, Belgium)	136
	GE Healthcare (Chicago, USA)	1
	Varian (Palo Alto, USA)	4
	Not available	13
Hospital 1 outpatient test set (United States)	Agfa (Mortsel, Belgium)	108
Hospital 2 emergency test set (Brazil)	Fujifilm Corporation (Tokyo, Japan)	303
Hospital 3 inpatient test set (United States)	Agfa (Mortsel, Belgium)	33
	Caresteam (Rochester, USA)	72
	Kodak (Rochester, USA)	2
	Philips (Amsterdam, Netherlands)	2
	Siemens (Munich, Germany)	2