Table 1.

The five organizations that contributed to the research or development of the largest number of imaging NMEs^a

Company	First	Total	Now
Mallinckrodt	1962	20	Acquired and relaunched
Squibb	1989	13	Bristol-Myers Squibb
Roche (Medi-Physics)	1974	11	GE Healthcare
DuPont	1978	10	Lantheus
Schering AG	1952	6	Bayer

^aThe table also gives the date of their first approval, the total number of NMEs introduced by the organization, and their current statues. Please note that the organizations shown in red are still active in imaging NME research and development based on publically available information, whereas there is no evidence for continued NME research for those companies shown in bold