kit for the preparation of technetium tc 99m albumin aggregated - Generic Medications

11.1 Product Characteristics DRAXIMAGE MAA contains albumin aggregated obtained by fractionating material (source blood, plasma, serum, or placentas) from healthy human donors. The macroaggregated albumin (MAA) particles are formed by denaturation of albumin human in a heating and aggregation process. Each vial contains 3,000,000 to 8,000,000 particles. By light microscopy, more than 90% of the particles are between 10 and 70 micrometers, while the typical average size is 20 to 40 micrometers; none is greater than 150 micrometers. DRAXIMAGE MAA (kit for the preparation of technetium Tc 99m albumin aggregated) injection provides a sterile, non-pyrogenic, non-radioactive, white lyophilized powder supplied in a multiple-dose reaction vial, sealed under an atmosphere of nitrogen, for radiolabeling with Sodium Pertechnetate Tc 99m Injection to prepare Technetium Tc 99m Albumin Aggregated Injection, a radioactive diagnostic agent, for intravenous or intraperitoneal use. Each reaction vial contains 2.5 mg of albumin aggregated, albumin human (5 mg), stannous chloride (0.06 mg minimum; 0.11 mg maximum stannous and stannic chloride) and sodium chloride (1.2 mg). Sodium hydroxide or hydrochloric acid has been added for pH adjustment. The pH is 5.2 to 6. It contains no preservative. 11.2 Physical Characteristics Technetium-99m decays by isomeric transition with a physical half-life of 6.02 hours. The principal photon that is useful for detection and imaging studies is listed in Table 5. Table 5. Principal Radiation Emission Data for Technetium-99m Radiation Mean % per Disintegration Mean Energy (keV) Gamma 89.07 140.5 11.3 External Radiation The specific gamma ray constant for technetium-99m is 0.78 R/mCi-hr at 1 cm. The first half value layer is 0.017 cm of lead (Pb). A range of values for the relative attenuation of the radiation resulting from the interposition of various thicknesses of lead is shown in Table 6. For example, the use of 0.25 cm thickness of lead will attenuate the radiation emitted by a factor of about 1,000. Table 6. Radiation Attenuation by Lead Shielding Shield Thickness (Pb) cm Coefficient of Attenuation 0.017 0.5 0.08 10 -1 0.16 10 -2 0.25 10 -3 0.33 10 -4 To correct for physical decay of this radionuclide, the fractions that remain at selected intervals after the time of calibration are shown in Table 7. Table 7. Physical Decay Chart for Technetium-99m, half-life 6.02 hours Hours Fraction Remaining Hours Fraction Remaining 0* 1.000 5 0.562 1 0.891 6 0.501 2 0.794 8 0.398 3 0.708 10 0.316 4 0.631 12 0.251 *Calibration time

11.1 Product Characteristics PULMOTECH MAA contains albumin aggregated obtained by fractionating material (source blood, plasma, serum, or placentas) from healthy human donors. The macroaggregated albumin (MAA) particles are formed by heat denaturation of stannous chloride treated albumin human under controlled conditions. Each vial contains 2,000,000 to 4,000,000 particles. The particle size distribution of the aggregated albumin is such that not less than 90% are 10 to 90 micrometers in size. There are no aggregated albumin particles greater than 150 micrometers in size as determined by circular equivalents. PULMOTECH MAA (kit for the preparation of technetium Tc 99m albumin aggregated) injection provides a sterile, non-pyrogenic, non-radioactive, white lyophilized powder in a multiple-dose reaction vial, sealed under an atmosphere of nitrogen, for radiolabeling with Sodium Pertechnetate Tc 99m Injection to prepare Technetium Tc 99m Albumin Aggregated Injection, a radioactive diagnostic agent, for intravenous or intraperitoneal use. Each reaction vial contains 2 mg of albumin aggregated, albumin human (7.1 mg), stannous chloride (0.1 mg minimum; 0.22 mg maximum stannous and stannic), sodium chloride (9 mg). Hydrochloric acid may have been added for pH adjustment. The pH is between 5 and 7. It contains no preservatives. 11.2 Physical Characteristics Technetium-99m decays by isomeric transition with a physical half-life of 6.02 hours. The principal photon that is useful for detection and imaging is listed in Table 4. Table 4 – Principal Radiation Emission Data for Technetium-99m Radiation Mean % per Disintegration Energy (keV) Gamma-2 89.07 140.5 11.3 External Radiation The specific gamma ray constant for technetium-99m is 0.78 R/mCi-hr at 1 cm. The first half-value thickness of lead (Pb) for technetium-99m is 0.017 cm. A range of values for the relative attenuation of the radiation emitted by this radionuclide that results from interposition of various thicknesses of Pb is shown in Table 5. For example, the use of 0.25 cm of Pb will decrease the external radiation exposure by a factor of about 1,000. Table 5 – Radiation Attenuation by Lead Shielding Shield Thickness(Pb) cm Coefficient of Attenuation 0.017 0.5 0.08 10 -1 0.16 10 -2 0.25 10 -3 0.33 10 -4 To correct for physical decay of this radionuclide, the fractions that remain at selected time intervals after the time of calibration are shown in Table 6. Table 6– Physical Decay Chart for Technetium-99m, Half-Life 6.02 Hours Hours Fraction Remaining Hours Fraction Remaining 0* 1.000 7 0.447 1 0.891 8 0.398 2 0.794 9 0.355 3 0.708 10 0.316 4 0.631 11 0.282 5 0.562 12 0.251 6 0.501 *Calibration Time