Table 1.

Summary of available information needed for quantitation assessment of outside PET/CT studies. This information is either recorded in the header file or written in the outside report accompanying the scan, if available. While SUV or SUL can be calculated, we do not know precise calibration methods for scanner and injected dose. Thus absolute quantitation can be inaccurate.

	Outside Studies
	Number	Percentage of total
Total	170	100%
Weight	110	65%
Height	64	38%
FDG dose	123	72%
Injection-to-scan time	127	75%
Plasma glucose	61	36 %
Adequate for SUL and SUV	63	37%
Adequate for SUV only	105	68%
Not adequate for any quantitation	55	32%