. Author manuscript; available in PMC: 2010 Mar 3.

Published in final edited form as: Eur J Nucl Med. 2001 Jul;28(7):900–906. doi: 10.1007/s002590100551

Table 3.

Cylinder activity quantification

Cylinder volume (ml)	b	Recovery coefficient (from spheres)	Activity without RC (MBq)	Activity with RC (MBq)
50	0	0.78	0.56 (−79%)	0.72 (−39%)
100	0	0.86	0.67 (−50%)	0.77 (−29%)
200	0	1.00	0.85 (−18%)	0.85 (−18%)
50	1/5	0.87	0.70 (−44%)	0.80 (−25%)
100	1/5	0.90	0.76 (−32%)	0.84 (−19%)
200	1/5	1.00	0.91 (−9%)	0.91 (−9%)
50	1/3	0.93	0.78 (−28%)	0.84 (−19%)
100	1/3	0.93	0.82 (−22%)	0.88 (−13%)
200	1/3	1.00	0.96 (−4%)	0.96 (−4%)

The values in parentheses are the percentage difference between the estimated activity and the true value of 1 MBq. VOIs were defined using physical boundaries