Article Figures & Data
Figures
- FIGURE 1.
Schematic representation of procedures for determination of CFs. Vial CF = (calibrated vial activity × decay factor)/assayed vial activity. Syringe CF = syringe activity (calibrated vial activity − residual vial activity after syringe withdrawal)/assayed syringe activity. *Syringe and second vial assays were decay-corrected to time of first vial assay.
- FIGURE 2.
Distribution of glass vial CFs for 167 dose calibrators tested without copper sleeves. CFv = vial CF.
- FIGURE 3.
Distribution of 10-mL plastic syringe CFs for 167 dose calibrators tested without copper sleeves. CFs = syringe CF.
Tables
Manufacturer No. of models No. of units Biodex 4 24 Capintec 19 127 Empos Ltd. 1 1 Medisystem 1 2 MIE Medical Imaging Electronics GmbH 1 1 Nuclear Associates 1 1 Nuklear Medizintechnik 4 9 PTW Freiburg GmbH 3 6 Radcal 1 1 Syncor 1 1 Veenstra 3 4 No copper sleeve Copper sleeve Container No. Mean vial CF SD No. Mean vial CF SD 10-mL vial 167 1.278 (range, 0.823–1.757) 0.152 10 1.538 (range, 0.931–2.566) 0.697 Dose calibrator Vial CF Syringe CF (10 mL) Difference (syringe CF − vial CF) Manufacturer and model 1 1.288 Not done — Biodex Atomlab 100 2 1.052 1.007 0.045 Capintec CRC-15R 3 1.663 1.628 0.035 Capintec CRC-15R 4 2.395 2.360 0.035 Capintec CRC-15R 5 0.978 0.944 0.034 Capintec CRC-15R 6 0.976 0.971 0.005 Amersham Radioisotope Calibrator (ARC)-150 7 2.530 2.461 0.069 Capintec CRC-15R 8 2.566 2.492 0.074 Capintec CRC-15R 9 0.931 0.887 0.044 Capintec CRC-12R 10 1.004 1.070 0.064 Capintec CRC-15R Mean 1.538 1.536 0.002 — No copper sleeve Copper sleeve Container No. Mean syringe CF SD No. Mean syringe CF SD 10-mL syringe 167 0.811 (range, 0.472–1.052) 0.096 9 1.536 (range, 0.877–2.492) 0.730 5-mL syringe 23 0.815 (range, 0.722–1.027) 0.072 2 1.030 (range, 1.020–1.040) — 3-mL syringe 17 0.792 (range, 0.728–0.935) 0.052 2 0.984 (range, 0.963–1.005) — Manufacturer No. of units Mean vial CF Biodex 23 1.438 (range, 1.064–1.626) Capintec 118 1.274 (range, 0.823–1.757) Empos Ltd. 1 0.988 Medisystem 2 0.922 (range, 0.890–0.954) MIE Medical Imaging Electronics GmbH 1 1.312 Nuclear Associates 1 1.298 Nuklear Medizintechnik 9 1.193 (range, 0.977–1.534) PTW Freiburg GmbH 6 1.069 (range, 0.917–1.207) Radcal 1 1.227 Syncor 1 1.224 Veenstra 4 1.210 (range, 0.996–1.332)
