TABLE 2

Probe-Measured Thyroid Uptake for 15 Subjects

Subject	Thyroid counts/min	Background counts/min	Background-corrected thyroid counts/min	Estimated μCi^* in thyroid	Percentage uptake of injected dose
Nonblocked
0002	652,783	117,756	535,027	150	1.8
0020	590,968	112,988	477,980	134	1.6
0004	377,888	101,925	275,963	78	0.9
0007	638,082	135,748	502,334	141	1.7
0009	543,946	89,304	454,642	128	1.5
0001	635,952	151,500	484,452	136	1.6
0005	331,940	178,212	153,728	43	0.5
0011	644,402	156,117	488,285	137	1.6
0019	543,283	107,075	436,208	123	1.4
Mean					1.4
Blocked
0010	484,072	151,916	332,156	93	1.1
0003	420,677	137,013	283,664	80	0.9
0008	689,564	161,650	527,914	148	1.7
0013	556,816	134,898	421,918	119	1.4
0017	577,106	113,395	463,711	130	1.5
0018	436,055	101,902	334,153	94	1.1
Mean					1.3

↵* 1 μCi = 37 kBq.