Information in this record refers to the use of Ga 67 citrate as a diagnostic agent. The United States Nuclear Regulatory Commission states that breastfeeding should be interrupted temporarily after administration of Ga 67 citrate to a nursing mother. The duration of breastfeeding interruption depends on the dose administered (see table).[1] The International Commission on Radiological Protection recommends discontinuation of breastfeeding for more than 3 weeks after Ga 67 citrate.[2] Those receiving the higher doses might have to permanently discontinue breastfeeding this infant.[3][4] After doses greater than 200 MBq, consideration of temporarily limiting close contact between the mother and infant.[5] During the period of interruption, the breasts should be emptied regularly and completely. If the mother has expressed and saved milk prior to the examination, she can feed it to the infant during the period of nursing interruption.[3][5][6] The milk that is pumped by the mother during the time of breastfeeding interruption can either be discarded or[3][6] stored frozen and given to the infant after 10 physical half-lives, or about 33 days, have elapsed. Mothers concerned about the level of radioactivity in their milk could ask to have it tested at a nuclear medicine facility at their hospital. When the radioactivity is at a safe level she may resume breastfeeding. A method for measuring milk radioactivity and determining the time when a mother can safely resume breastfeeding has been published.[4] Mothers who receive a dose less than 190 MBq for an inflammation scan need not refrain from close contact with their infants.[7]
Dose |
Duration of Interruption[1] |
---|
150 MBq (4 mCi) | 1 month |
50 MBq (1.3 mCi) | 2 weeks |
7 MBq (0.2 mCi) | 1 week |