Article Figures & Data
Figures
- FIGURE 1.
Photo of withdrawal system: spinal needle assembled to membrane obturator IN-Stopper.
Tables
Agent Activity (MBq) Volume (mL) 99mTc-HMDP 10,930 (10,220–11,600) 5.0 (5.0–5.0) 99mTc-HSA 2,068 (1,995–2,376) 3.52 (3.3–3.7) 99mTc-albumin nanocolloid 1,634 (1,368–1,814) 4.78 (4.8–5.0) Data are mean followed by range in parentheses.
pH Radiochemical purity (%) Agent Conformity Baseline 4 or 7 h* Conformity Baseline 4 or 7 h* 99mTc-pertechnetate eluate (n = 5) 4–8 5.84 (5.8–6.0) 5.80 (5.8–5.8) >95% 99.63 (99.37–99.99) 99.56 (99.34–99.99) 99mTc-HMDP (n = 5) 5–7 5.36 (5.0–5.5) 5.36 (5.0–5.5) >95% 99.63 (99.34–99.79) 99.05 (98.42–99.57) 99mTc-HSA (n = 5) 2–6.5 5.4 (5.0–6.0) 5.4 (5.0–6.0) >95% 99.70 (99.05–99.99) 99.51 (99.13–99.76) 99mTc-albumin nanocolloid (n = 5) 4–7 5.0 (5.0–5.0) 5.0 (5.0–5.0) >95% 99.55 (99.31–99.99) 99.67 (99.10–99.99) ↵* 7 h for 99mTc-pertechnetate eluate, 99mTc-HMDP, and 99mTc-HSA, and 4 h for 99mTc-albumin nanocolloid.
Data are mean with or without range in parentheses.
- TABLE 3
Activity of 99mTc-Pertechnetate Eluate Vials and Dosimetry of Dominant and Nondominant Hands
Mean dose ± SD (μSv/MBq) Process Range of vial activity (MBq) Dominant hand Nondominant hand Routine disinfection of vial cap, reversal of vial, and drawing of syringe 7,170–10,600 12.3 × 10−5 ± 8.69 × 10−5 17.5 × 10−5 ± 9.92 × 10−5 Insertion of spinal needle/IN-Stopper into vial 10,218–11,800 6.65 × 10−5 ± 3.68 × 10−5 0 Disinfection of obturator cap and syringe; withdrawal of spinal needle/IN-Stopper 6,790–11,215 6.85 × 10−5 ± 6.81 × 10−6 12.1 × 10−5 ± 4.89 × 10−5
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