Article Figures & Data
Figures
- FIGURE 1.
Percentage of RCP of stabilized 99mTc-d,l-HMPAO over time in both groups of labeling activities and forms of storage.
- FIGURE 2.
Percentage of radiochemical impurities in stabilized 99mTc-d,l-HMPAO over time in vials and syringes (mean ± SD; n = 10).
Tables
- TABLE 1
Effect of Labeling Activity and Storage Form on RCP of Stabilized 99mTc-d,l-HMPAO over Time
1,110 MBq 2,600–3,700 MBq Time (h) Vial Syringe Needle Vial Syringe Needle 0 93.1 ± 1.6 NA NA 91.4 ± 1.0 NA NA 2 92.1 ± 0.9 89.8 ± 2.1 74.2 ± 5.0 89.0 ± 1.4 85.9 ± 1.4 73.3 ± 8.5 4 91.1 ± 1.0 88.7 ± 2.0 59.8 ± 5.1 85.3 ± 3.0 80.2 ± 3.1 57.1 ± 4.5 NA = not applicable.
Values represent percentage of RCP (mean ± SD); n = 10. P < 0.01 for vials between both groups of labeling activities at all times. P < 0.01 for syringes in both groups of labeling activities at 2 and 4 h. P < 0.01 between vials and syringes in both groups of labeling activities at 2 and 4 h. P < 0.01 between vials and needles in both groups of labeling activities at 2 and 4 h. P < 0.01 between syringes and needles in both groups of labeling activities at 2 and 4 h.
- TABLE 2
Effect of Labeling Activity and Storage Form on Radiochemical Impurities in Stabilized 99mTc-d,l-HMPAO in Vials and Syringes over Time
1,110 MBq 2,600–3,700 MBq 99mTcO2 + secondary 99mTc-HMPAO 99mTcO4− 99mTcO2 + secondary 99mTc-HMPAO 99mTcO4− Time (h) Vial Syringe Vial Syringe Vial Syringe Vial Syringe 0 4.8 ± 0.9 NA 2.1 ± 0.9 NA 6.2 ± 1.2 NA 2.3 ± 0.7 NA 2 5.5 ± 0.9 6.2 ± 1.2 2.4 ± 0.5 4.0 ± 1.6 7.0 ± 1.4 8.1 ± 1.5 4.1 ± 1.2 6.0 ± 1.2 4 6.1 ± 0.8 6.3 ± 0.9 2.8 ± 0.6 5.0 ± 1.7 8.6 ± 1.7 9.3 ± 1.9 6.2 ± 1.7 10.4 ± 2.5 NA = not applicable.
Values represent percentage of radiochemical impurities (mean ± SD); n = 10. P < 0.01 for 99mTcO2 + secondary 99mTc-HMPAO and 99mTcO4− between both groups of activities in vial and syringe at all times. P > 0.05 for 99mTcO4− between both groups of labeling activities in vial at t = 0.
