Comparative Evaluation of 24-Hour Thyroid 131I Uptake Between γ Camera–Based Method Using Medium-Energy Collimator and Standard Uptake Probe–Based Method | Journal of Nuclear Medicine Technology

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FIGURE 1.
Scintiscan of camera-based uptake in 45-y-old man with diffuse thyrotoxic goiter. Probe-based 24-h ¹³¹I uptake was 74.3%, whereas camera-based uptake was 75.9%.
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FIGURE 2.
Scintiscan of 24-h ¹³¹I uptake in 45-y-old woman with nonthyrotoxic multinodular goiter. Probe-based 24-h ¹³¹I uptake was 23.17%, whereas camera-based uptake was 21.7%.
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FIGURE 3.
Graphs of probe-based and camera-based uptake calculated in all patients. Neck uptake values calculated by probe and camera are plotted against individual patients in thyrotoxic group (top) and nonthyrotoxic group (bottom). Correlation coefficient of 0.990659 was obtained between the 2 methods when all patients were considered together.

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TABLE 1

Data for Nonthyrotoxic Patients

		Uptake (%)
Patient no.	Sex	Probe	Camera	Difference
1	F	2.64	1.91	0.73
2	F	7.2	4.9	2.3
3	F	9.53	8.1	1.43
4	F	12.4	8.23	4.17
5	F	15.37	13.56	1.81
6	F	16.4	14.08	2.32
7	F	18.3	17.04	1.26
8	F	20.01	19.81	0.2
9	M	20.5	22.7	−2.2
10	F	22.36	21.7	0.66
11	F	23.17	21.71	1.46
12	F	24	23.9	0.1
13	F	28.3	27.04	1.26
14	F	28.35	26.4	1.95
15	M	29.5	37.9	−8.4
16	M	30.33	26.7	3.63
17	F	31.8	28.22	3.58
18	F	32.7	32.7	0
19	F	33.3	34.8	−1.5
20	F	34.29	32	2.29
21	F	38.49	36.84	1.65
Mean		26.3	25.7
SD		9.7	10.5

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TABLE 2

Data for Thyrotoxic Patients

		Uptake (%)
Patient no.	Sex	Probe	Camera	Difference
22	M	40.13	36.89	3.24
23	F	41	38.5	2.5
24	F	41.3	37.04	4.26
25	F	45	50.4	−5.4
26	F	46.16	40.11	6.05
27	F	52	58	−6
28	F	52.4	53.7	−1.3
29	F	54	57	−3
30	F	55.09	51.5	3.59
31	F	55.18	54.9	0.28
32	F	58.74	55.44	3.3
33	M	59.23	55.79	3.44
34	F	61.58	59	2.58
35	F	62	55	7
36	F	66	57.7	8.3
37	F	67.78	66.52	1.26
38	M	69.98	69.7	0.28
39	F	70.2	69.11	1.09
40	F	71	76	−5
41	F	72.42	74.77	−2.35
42	F	73.7	75.59	−1.89
43	M	74.3	75.93	−1.63
44	F	75	80.9	−5.9
45	M	75.6	86.7	−11.1
46	M	76.5	76	0.5
47	F	76.67	68	8.67
48	F	76.9	73	3.9
49	M	77	71	6
50	F	78.06	76.11	1.95
51	F	79.1	82.5	−3.4
52	M	79.2	76.04	3.16
53	M	80.14	75.17	4.97
54	F	80.9	75.3	5.6
55	F	82.4	84.7	−2.3
56	F	86	91.8	−5.8
57	F	86	76.6	9.4
58	M	87.24	83.67	3.57
59	M	88.8	91.7	−2.9
60	M	90	85.54	4.46
61	M	93	90.7	2.3
62	F	94.04	93.04	1
63	F	94.58	89	5.58
64	F	95.21	93.2	2.01
65	F	96.8	95	1.8
66	F	97.2	95.9	1.3
Mean		71.9	70.67
SD		16.22	16.62

Paired t test value, 0.007325.