Is Bicisato de tecnecio (99m Tc) Safe in Breastfeeding

I am a breastfeeding mother and i want to know if it is safe to use Bicisato de tecnecio (99m Tc)? Is Bicisato de tecnecio (99m Tc) safe for nursing mother and child? Does Bicisato de tecnecio (99m Tc) extracts into breast milk? Does Bicisato de tecnecio (99m Tc) has any long term or short term side effects on infants? Can Bicisato de tecnecio (99m Tc) influence milk supply or can Bicisato de tecnecio (99m Tc) decrease milk supply in lactating mothers?

Information in this record refers to the use of technetium Tc 99m bicisate (Tc 99m ethylcysteinate dimer; Tc 99m ECD) as a diagnostic agent. The International Commission on Radiological Protection states that breastfeeding need not be interrupted after administration of Tc 99m ECD.[1] To follow the principle of keeping exposure "as low as reasonably achievable", some experts recommend nursing the infant just before administration of the radiopharmaceutical and interrupting breastfeeding for 3 to 6 hours after the dose, then expressing the milk completely once and discarding it. 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.[2][3][4] Mothers need not refrain from close contact with their infants after usual clinical doses.[5] However, reducing close contact with the child to the least possible time for 6 hours following injection of the radiopharmaceutical, will ensure that the exposure is "as low as reasonably achievable". 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 levels she may resume breastfeeding. A method for measuring milk radioactivity and determining the time when a mother can safely resume breastfeeding has been published.[6] For nursing mothers who work with Tc 99m substances in their workplace, there is no need to take any precautions other than those appropriate for general radiation protection.[7]