The University Of Utah Dba Cyclotron Radiochemistry Lab Huntsman Cancer Institute

The University Of Utah Dba Cyclotron Radiochemistry Lab Huntsman Cancer Institute Drugs

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  Fludeoxyglucose F-18 Injection emits radiation. Use procedures to minimize radiation exposure. Calculate the final dose from the end of synthesis (EOS) time using proper radioactive decay factors. Assay the final dose in a properly calibrated dose calibrator before administration to the patient [see Description(11.2)].

  2.1 Recommended Dose for Adults

  Within the oncology, cardiology and neurology settings, the recommended dose for adults is 5 – 10 mCi (185 – 370 MBq) as an intravenous injection.

  2.2 Recommended Dose for Pediatric Patients

  Within the neurology setting, the recommended dose for pediatric patients is 2.6 mCi, as an intravenous injection. The optimal dose adjustment on the basis of body size or weight has not been determined [see Use in Special Populations (8.4)].

  2.3 Patient Preparation

  To minimize the radiation absorbed dose to the bladder, encourage adequate hydration. Encourage the patient to drink water or other fluids (as tolerated) in the 4 hours before their PET study.

  Encourage the patient to void as soon as the imaging study is completed and as often as possible thereafter for at least one hour.

  Screen patients for clinically significant blood glucose abnormalities by obtaining a history and/or laboratory tests [see Warnings and Precautions (5.2)]. Prior to Fludeoxyglucose F-18 PET imaging in the oncology and neurology settings, instruct patient to fast for 4 – 6 hours prior to the drug’s injection.

  In the cardiology setting, administration of glucose-containing food or liquids (e.g., 50 – 75 grams) prior to Fludeoxyglucose F-18 Injection facilitates localization of cardiac ischemia.

  2.4 Radiation Dosimetry

  The estimated human absorbed radiation doses (rem/mCi) to a newborn (3.4 kg), 1-year old (9.8 kg), 5-year old (19 kg), 10-year old (32 kg), 15-year old (57 kg), and adult (70 kg) from intravenous administration of Fludeoxyglucose F-18 Injection are shown in Table 1. These estimates were calculated based on human 2 data and using the data published by the InternationalCommission on Radiological Protection 4 for Fludeoxyglucose 18F. The dosimetry data show thatthere are slight variations in absorbed radiation dose for various organs in each of the age groups. These dissimilarities in absorbed radiation dose are due to developmental age variations (e.g., organ size, location, and overall metabolic rate for each age group). The identified critical organs (in descending order) across all age groups evaluated are the urinary  bladder, heart, pancreas, spleen, and lungs.

  Table 1. Estimated Absorbed Radiation Doses (rem/mCi) After Intravenous Administration of Fludeoxyglucose F 18 Injection* Organ Newborn (3.4 kg) 1-year old (9.8 kg) 5-year old (19 kg) 10-year old (32 kg) 15-year old (57 kg) Adult (70 kg) Bladder wall† 4.3 1.7 0.93 0.60 0.40 0.32 Heart wall 2.4 1.2 0.70 0.44 0.29 0.22 Pancreas 2.2 0.68 0.33 0.25 0.13 0.096 Spleen 2.2 0.84 0.46 0.29 0.19 0.14 Lungs 0.96 0.38 0.20 0.13 0.092 0.064 Kidneys 0.81 0.34 0.19 0.13 0.089 0.074 Ovaries 0.80 0.8 0.19 0.11 0.058 0.053 Uterus 0.79 0.35 0.19 0.12 0.076 0.062 LLI wall‡ 0.69 0.28 0.15 0.097 0.060 0.051 Liver 0.69 0.31 0.17 0.11 0.076 0.058 Gallbladder wall 0.69 0.26 0.14 0.093 0.059 0.049 Small intestine 0.68 0.29 0.15 0.096 0.060 0.047 ULI wall₴ 0.67 0.27 0.15 0.090 0.057 0.046 Stomach wall 0.65 0.27 0.14 0.089 0.057 0.047 Adrenals 0.65 0.28 0.15 0.095 0.061 0.048 Testes 0.64 0.27 0.14 0.085 0.052 0.041 Red marrow 0.62 0.26 0.14 0.089 0.057 0.047 Thymus 0.61 0.26 0.14 0.086 0.056 0.044 Thyroid 0.61 0.26 0.13 0.080 0.049 0.039 Muscle 0.58 0.25 0.13 0.078 0.049 0.039 Bone surface 0.57 0.24 0.12 0.079 0.052 0.041 Breast 0.54 0.22 0.11 0.068 0.043 0.034 Skin 0.49 0.20 0.10 0.060 0.037 0.030 Brain 0.29 0.13 0.09 0.078 0.072 0.070 Other tissues 0.59 0.25 0.13 0.083 0.052 0.042

  * MIRDOSE 2 software was used to calculate the radiation absorbed dose. Assumptions on the biodistribution based on data from Gallagher et al.1 and Jones et al.2

  † The dynamic bladder model with a uniform voiding frequency of 1.5 hours was used.

  ‡ LLI = lower large intestine;

  ₴ ULI = upper large intestine

  2.5 Radiation Safety – Drug Handling

  Use waterproof gloves, effective radiation shielding, and appropriate safety measures when handling Fludeoxyglucose F-18 Injection to avoid unnecessary radiation exposure to the patient, occupational workers, clinical personnel and other persons. Radiopharmaceuticals should be used by or under the control of physicians who arequalified by specific training and experience in the safe use and handling of radionuclides, and whose experience and training have been approved by the appropriate governmental agency authorized to license the use of radionuclides. Calculate the final dose from the end of synthesis (EOS) time using proper radioactivedecay factors. Assay the final dose in a properly calibrated dose calibrator before administration to the patient [see Description (11.2)]. The dose of Fludeoxyglucose F-18 used in a given patient should be minimizedconsistent with the objectives of the procedure, and the nature of the radiation detection devices employed.

  2.6 Drug Preparation and Administration

  Calculate the necessary volume to administer based on calibration time and dose. Aseptically withdraw Fludeoxyglucose F-18 Injection from its container. Inspect Fludeoxyglucose F-18 Injection visually for particulate matter and discolorationbefore administration, whenever solution and container permit. Do not administer the drug if it contains particulate matter or discoloration; dispose ofthese unacceptable or unused preparations in a safe manner, in compliance with applicable regulations. Use Fludeoxyglucose F-18 Injection within 12 hours from the EOS

  2.7 Imaging Guidelines

  Initiate imaging within 40 minutes following Fludeoxyglucose F-18 Injection administration. Acquire static emission images 30 – 100 minutes from the time of injection.

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  2.1 Radiation Safety - Drug Handling

  Wear waterproof gloves and effective shielding when handling Sodium Fluoride F 18 Injection. Use appropriate safety measures, including shielding, consistent with proper patient management to avoid unnecessary radiation exposure to the patient, occupational workers, clinical personnel, and other persons. Radiopharmaceuticals should be used by or under the control of physicians who are qualified by specific training and experience in the safe use and handling of radionuclides, and whose experience and training have been approved by the appropriate governmental agency authorized to license the use of radionuclides. Use aseptic technique to maintain sterility during all operations involved in the manipulation and administration of Sodium Fluoride F 18 Injection. The dose of Sodium Fluoride F 18 Injection should be minimized consistent with the objectives of the procedure, and the nature of the radiation detection devices employed. The final dose for the patient should be calculated using proper decay factors from the time of End of Synthesis (EOS), and measured by a suitable radioactivity calibration system before administration [see Description (11.2)].

  2.2 Radiation Safety - Patient Preparation

  To minimize the radiation-absorbed dose to the bladder, encourage adequate hydration. Encourage the patient to ingest at least 500 mL of fluid immediately prior and subsequent to the administration of Sodium Fluoride F 18 Injection. Encourage the patient to void one-half hour after administration of Sodium Fluoride F 18 Injection and as frequently thereafter as possible for the next 12 hours.

  2.3 Drug Preparation and Administration

  Calculate the necessary volume to administer based on calibration time and dose. Inspect Sodium Fluoride F 18 Injection visually for particulate matter and discoloration before administration, whenever solution and container permit. Do not administer Sodium Fluoride F 18 Injection containing particulate matter or discoloration; dispose of these unacceptable or unused preparations in a safe manner, in compliance with applicable regulations. Aseptically withdraw Sodium Fluoride F 18 Injection from its container.

  2.4 Recommended Dose for Adults

  Administer 300–450 MBq (8–12 mCi) as an intravenous injection.   

  2.5 Recommended Dose for Pediatric Patients

  In reported clinical experience in approximately 100 children, weight based doses (2.1 MBq/kg) ranging from 19 MBq–148 MBq (0.5 mCi–4 mCi) were used.

  2.6 Radiation Dosimetry

  The age/weight- based estimated absorbed radiation doses (mGy/MBq) from intravenous injection of Sodium Fluoride F 18 Injection are shown in Table 1. These estimates were calculated based on human data and using the data published by the Nuclear Regulatory Commission [1] and the International Commission on Radiological Protection for Sodium Fluoride Injection [2]. The bone, bone marrow and urinary bladder are considered target and critical organs.

  Table 1: Estimated Absorbed Radiation Doses after Intravenous Administration of Sodium Fluoride F 18 Injection Organ Estimated Radiation Dose mGy/MBq Adult 70 kg [1] 15 year 56.8 kg [2] 10 year33.2 kg [2] 5 year19.8 kg [2] 1 year 9.7 kg [2] Adrenals 0.0062 0.012 0.018 0.028 0.052 Brain 0.0056 N/A N/A N/A N/A Bonesurfaces 0.060 0.050 0.079 0.13 0.30 Breasts 0.0028 0.0061 0.0097 0.015 0.030 GI Gallbladder wall 0.0044 N/A N/A N/A N/A Stomach wall 0.0038 0.008 0.013 0.019 0.036 Small intestine 0.0066 0.012 0.018 0.028 0.052 Upper large intestine wall 0.0058 0.010 0.016 0.026 0.046 Lower large intestine wall 0.012 0.016 0.025 0.037 0.063 Heart wall 0.0039 N/A N/A N/A N/A Kidneys 0.019 0.025 0.036 0.053 0.097 Liver 0.0040 0.0084 0.013 0.021 0.039 Lungs 0.0041 0.0084 0.013 0.020 0.039 Muscle 0.0060 N/A N/A N/A N/A Ovaries 0.011 0.016 0.023 0.036 0.063 Pancreas 0.0048 0.0096 0.015 0.023 0.044 Red marrow 0.028 0.053 0.088 0.18 0.38 Skin 0.0040 N/A N/A N/A N/A Spleen 0.0042 0.0088 0.014 0.021 0.041 Testes 0.0078 0.013 0.021 0.033 0.062 Thymus 0.0035 N/A N/A N/A N/A Thyroid 0.0044 0.0084 0.013 0.020 0.036 Urinary bladder wall 0.25 0.27 0.4 0.61 1.1 Uterus 0.019 0.023 0.037 0.057 0.099 Other tissue N/A 0.010 0.015 0.024 0.044 Effective Dose Equivalent mSv/MBq 0.027 0.034 0.052 0.086 0.17

  [1] Data from Nuclear Regulatory Commission Report, Radiation Dose Estimates for Radiopharmaceuticals, NUREG/CR-6345, page 10, 1996.

  [2] Data from ICRP publication 53, Radiation Dose to Patients from Radiopharmaceuticals , Ann ICRP, Volume 18, pages 15 and 74, 1987

  2.7 Imaging Guidelines

  Imaging of Sodium Fluoride F 18 Injection can begin 1–2 hours after administration; optimally at 1 hour post administration. Encourage the patient to void immediately prior to imaging the fluoride F18 radioactivity in the lumbar spine or bony pelvis.

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