Страна: Австралия
Язык: английский
Источник: Department of Health (Therapeutic Goods Administration)
Gallium(67Ga) citrate
DESCRIPTION The product is an injection containing radioactive Gallium [ 67 Ga] at an activity concentration of 100 MBq/mL at the calibration time and date. The product conforms to the British Pharmacopoeia for Gallium [ 67 Ga] Citrate Injection. 4 mL and 8 mL. As supplied the product is sterile and contains 1% benzyl alcohol as a preservative. The product is designed for diagnostic use. Use by intravenous administration PHYSICAL CHARACTERISTICS OF 67 GA Gallium-67 with a physical half life of 78.3 hours, decays by electron capture to stable zinc-67. Photons associated with this transition that are useful for detection and imaging studies are listed in Table 1. TABLE 1: PRINCIPAL RADIATION EMISSION DATA Reference: Weber D A, Eckerman K F, Dillman L T and Ryman J C.MIRD. Radionuclide Data and Decay Schemes (1989) TABLE 2: PHYSICAL DECAY CHART EXTERNAL RADIATION The specific gamma ray constant for 67 Ga is 0.21 mGy per MBq-h at 1 cm. The first half value thickness of lead (Pb) for 67 Ga is 0.066 cm. Attenuation by lead is given in the following table. TABLE 3: RADIATION ATTENUATION BY LEAD SHIELDING GALLIUM [ 67 GA] CITRATE INJECTION BP _PI_ P RODUCT I NFORMATION PRINCIPAL ENERGY (KEV)* ABUNDANCE RADIATION Gamma-2 37.0 93.3 Gamma-3 20.4 184.6 Gamma-5 16.0 300.2 TIME FACTOR TIME FACTOR (HR)* (HR)* 0 1.00 72 0.53 6 0.95 78 0.50 12 0.90 84 0.48 18 0.85 90 0.45 24 0.81 96 0.43 30 0.77 108 0.38 36 0.73 120 0.35 42 0.69 132 0.31 48 0.65 144 0.28 54 0.62 156 0.25 60 0.59 168 0.23 66 0.563 SHIELD THICKNESS COEFFICIENT OF ATTENUATION MM PB 0.066 0.5 0.41 Прочитать полный документ