Sodium Fluoride F 18

Sodium Fluoride F 18

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Uses

1 INDICATIONS AND USAGE
Sodium Fluoride F 18 Injection is indicated for diagnostic positron emission tomography (PET) imaging of bone to define areas of altered osteogenic activity.

History

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Other Information

11 DESCRIPTION
11.1 Chemical Characteristics
Sodium Fluoride F 18 Injection is a positron emitting radiopharmaceutical, containing no-carrier-added, radioactive fluoride F18 that is used for diagnostic purposes in conjunction with PET imaging. It is administered by intravenous injection. The active ingredient, sodium fluoride F18, has the molecular formula Na[18F] with a molecular weight of 40.99, and has the following chemical structure:
Na+ 18F-
Sodium Fluoride F 18 Injection is provided as a ready-to-use, isotonic, sterile, pyrogen-free, preservative-free, clear and colorless solution. Each mL of the solution contains between 370 MBq to 7,400 MBq (10 mCi to 200 mCi) sodium fluoride F18, at the EOS reference time, in 0.9% aqueous sodium chloride. The pH of the solution is between 4.5 and 8. The solution is presented in 10-50 mL multiple- dose glass vials with variable total volume and total radioactivity in each vial.
11.2 Physical Characteristics
Fluoride F18 decays by positron (β+) emission and has a half-life of 109.7 minutes. Ninety-seven percent of the decay results in emission of a positron with a maximum energy of 633 keV and 3% of the decay results in electron capture with subsequent emission of characteristic X-rays of oxygen. The principal photons useful for diagnostic imaging are the 511 keV gamma photons, resulting from the interaction of the emitted positron with an electron (Table 2). Fluorine F18 atom decays to stable 18O-oxygen.

Table 2: Principal Emission Data for Fluoride F18
Radiation/Emission % per Disintegration Mean Energy
*
Produced by positron annihilation
[3] Kocher, D.C. Radioactive Decay Data Tables DOE/TIC-11026, 69, 1981.
Positron (β+) 96.73 249.8 keV
Gamma (±)*
193.46 511.0 keV
The specific gamma ray constant (point source air kerma coefficient) for fluoride F18 is 5.7 R/hr/mCi (1.35 x 10 -6 Gy/hr/kBq) at 1 cm. The half-value layer (HVL) for the 511 keV photons is 4 mm lead (Pb). A range of values for the attenuation of radiation results from the interposition of various thickness of Pb. The range of attenuation coefficients for this radionuclide is shown in Table 3. For example, the interposition of an 8 mm thickness of Pb with a coefficient of attenuation of 0.25 will decrease the external radiation by 75%.

Table 3:Radiation Attenuation of 511 keV Photons by Lead (Pb) Shielding
Shield Thickness (Pb) mm Coefficient of Attenuation
0 0.00
4 0.50
8 0.25
13 0.10
26 0.01
39 0.001
52 0.0001


Table 4 lists the fraction of radioactivity remaining at selected time intervals from the calibration time. This information may be used to correct for physical decay of the radionuclide.

Table 4: Physical Decay Chart for Fluoride F18
Time Since Calibration Fraction Remaining
0*
1.00
15 minutes 0.909
30 minutes 0.826
60 minutes 0.683
110 minutes 0.500
220 minutes 0.250
440 minutes 0.060
12 hours 0.011
24 hours 0.0001
*Calibration time

Sodium Fluoride F 18 Manufacturers


  • Spectron Mrc, Llc
    Sodium Fluoride F 18 Injection [Spectron Mrc, Llc]
  • Global Isotopes, Llc D/b/a Zevacor Molecular
    Sodium Fluoride F 18 Injection [Global Isotopes, Llc D/b/a Zevacor Molecular]
  • Essential Isotopes Llc
    Sodium Fluoride F 18 (Sodium Fluoride F-18) Injection [Essential Isotopes Llc]
  • Triad Isotopes, Inc.
    Sodium Fluoride F 18 (Sodium Fluoride F-18) Injection, Solution [Triad Isotopes, Inc.]
  • Petnet Solutions, Inc.
    Sodium Fluoride F 18 Injection, Solution [Petnet Solutions, Inc.]
  • Iba Molecular North America, Inc.
    Sodium Fluoride F 18 (Sodium Fluoride F-18) Injection [Iba Molecular North America, Inc.]
  • Precision Nuclear Llc
    Sodium Fluoride F 18 (Sodium Fluoride F-18) Injection [Precision Nuclear Llc]
  • Houston Cyclotron Partners Lp Dba Cyclotope
    Sodium Fluoride F 18 (Sodium Fluoride F-18) Injection [Houston Cyclotron Partners Lp Dba Cyclotope]
  • Mayo Clinic Pet Radiochemistry Facility
    Sodium Fluoride F 18 Injection [Mayo Clinic Pet Radiochemistry Facility]
  • Shertech Laboratories, Llc
    Sodium Fluoride F 18 Injection [Shertech Laboratories, Llc]
  • University Of Texas Md Anderson Cancer Center
    Sodium Fluoride F 18 (Sodium Fluoride F-18) Injection [University Of Texas Md Anderson Cancer Center]
  • Ucsf Radiopharmaceutical Facility
    Sodium Fluoride F 18 (Sodium Fluoride F-18) Injection [Ucsf Radiopharmaceutical Facility]

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