TABLE 1

Twenty-Experiment Run Design

Run no.	Generator ingrowth time (h)	Eluate age (h)	Generator manufacturer	Activity (MBq)
1	24	0	DuPont	5,550
2	24	0	DuPont	37,000
3	24	3	DuPont	21,275
4	48	6	DuPont	21,275
5	72	0	DuPont	5,550
6	72	0	DuPont	37,000
7	72	6	DuPont	5,550
8	72	6	DuPont	21,275
9	24	0	Mallinckrodt	21,275
10	24	6	Mallinckrodt	5,550
11	24	6	Mallinckrodt	37,000
12	48	3	Mallinckrodt	37,000
13	72	0	Mallinckrodt	5,550
14	72	0	Mallinckrodt	37,000
15	72	6	Mallinckrodt	21,275
16	24	0	Medi-Physics	5,550
17	24	0	Medi-Physics	37,000
18	24	6	Medi-Physics	5,550
19	72	0	Medi-Physics	5,550
20	72	6	Medi-Physics	37,000