TABLE 5

Normal Range of ^99mTc-TRODAT-1 Binding Ratios in 3 Different Age Groups

Age group (y)	^99mTc-TRODAT-1 binding ratio
Age group (y)		C-S/O	I-S/O	C-P/O	I-P/O
50–59
Normal range	0.87∼1.09	0.85∼1.08	0.70∼0.85	0.70∼0.87
60–69
Normal range	0.78∼1.09	0.78∼1.11	0.65∼0.92	0.67∼0.94
70–79
Normal range	0.61∼0.85	0.67∼0.86	0.51∼0.75	0.52∼0.77

Abbreviations are as defined in Table 2.