Last update: March 28, 2014

Positron Emission Tomography

High Risk for breastfeeding

Poorly safe. Evaluate carefully.
Use safer alternative or interrupt breastfeeding 3 to 7 T ½ (elimination half-lives).
Read the Comment.

Radiation from a PET scan test is not higher than that from an abdominal CAT scan test.

Small quantity and short half life span of radionuclides used for this test make it safe to nurse the baby shortly after the test is done. Overall, it is safe to stop nursing for a 5 to 6 of isotope half life period which is the time require for the complete disappereance of radioactivity from the body.

Half life spans . . . . . . . . . . . . . . . . . Breastfeeding interruption time

F-18: 110 minutes . . . . . . . . . . . . . . . . . 10 hours (avoid contact for the first 4 hours)

C-11: 20 minutes . . . . . . . . . . . . . . . . . . . 2 hours

N-13: 10 minutes . . . . . . . . . . . . . . . . . . . 1 hour

O-15: 2 minutes . . . . . . . . . . . . . . . . . . . 10 minutes

Rb-82: 1,3 minutes . . . . . . . . . . . . . . . . . . 8 minutes

Meanwhile the half life span goes by milk pumping and freezing is recommended: it is safe to use the milk after a 10 half life span period.


We do not have alternatives for Positron Emission Tomography.

Suggestions made at e-lactancia are done by APILAM´s pediatricians and pharmacists, and are based on updated scientific publications.
It is not intended to replace the relationship you have with your doctor but to compound it.

Jose Maria Paricio, Founder & President of APILAM/e-Lactancia

Your contribution is essential for this service to continue to exist. We need the generosity of people like you who believe in the benefits of breastfeeding.

Thank you for helping to protect and promote breastfeeding.

José María Paricio, founder of e-lactancia.

Other names

Positron Emission Tomography is also known as


Positron Emission Tomography belongs to this group or family:


  1. Mitchell KB, Fleming MM, Anderson PO, Giesbrandt JG; Academy of Breastfeeding Medicine.. ABM Clinical Protocol #30: Radiology and Nuclear Medicine Studies in Lactating Women. Breastfeed Med. 2019 Jun;14(5):290-294. Abstract
  2. Jamar F, Buscombe J, Chiti A, Christian PE, Delbeke D, Donohoe KJ, Israel O, Martin-Comin J, Signore A. EANM/SNMMI guideline for 18F-FDG use in inflammation and infection. J Nucl Med. 2013 Abstract Full text (in our servers)
  3. Ko KH, Jung HK, Jeon TJ. Diffuse intense 18F-FDG uptake at PET in unilateral breast related to breastfeeding practice. Korean J Radiol. 2013 Abstract Full text (in our servers)
  4. Abhyankar A, Joshi J, Basu S. FDG uptake in unilateral breast related to breastfeeding practice in a patient of pulmonary hydatid cyst. Clin Nucl Med. 2012 Abstract
  5. Devine CE, Mawlawi O. Radiation safety with positron emission tomography and computed tomography. Semin Ultrasound CT MR. 2010 Abstract
  6. Leide-Svegborn S. Radiation exposure of patients and personnel from a PET/CT procedure with 18F-FDG. Radiat Prot Dosimetry. 2010 Abstract
  7. Hendler D, Stemmer SM. Uncommon reason for high fluorodeoxyglucose positron emission tomography uptake. J Clin Oncol. 2010 Abstract Full text (in our servers)
  8. Segall G, Delbeke D, Stabin MG, Even-Sapir E, Fair J, Sajdak R, Smith GT; SNM. SNM practice guideline for sodium 18F-fluoride PET/CT bone scans 1.0. J Nucl Med. 2010 Abstract Full text (in our servers)
  9. ICRP. Radiation dose to patients from radiopharmaceuticals. Addendum 3 to ICRP Publication 53. ICRP Publication 106. Annex D. Recommendations on breast-feeding interruptions, p. 163-165. Ann ICRP. 2008 Abstract Full text (link to original source) Full text (in our servers)
  10. Moses-Kolko EL, Meltzer CC, Helsel JC, Sheetz M, Mathis C, Ruszkiewicz J, Bogen D, Confer AL, Wisner KL. No interruption of lactation is needed after (11)C-WAY 100635 or (11)C-raclopride PET. J Nucl Med. 2005 Abstract Full text (in our servers)
  11. . Anthony Parker, Margaret E. Daube-Witherspoon, L. Stephen Graham, Henry D. Royal, Andrew E. Todd-Pokropek, Michael V. Yester. Society of Nuclear Medicine Procedure Guideline for General Imaging. Society of Nuclear Medicine. 2004 Full text (in our servers)
  12. Hicks RJ, Binns D, Stabin MG. Pattern of uptake and excretion of (18)F-FDG in the lactating breast. J Nucl Med. 2001 Abstract Full text (in our servers)

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e-lactancia is a resource recommended by Confederación Nacional de Pediatría (CONAPEME) from Mexico

Would you like to recommend the use of e-lactancia? Write to us at corporate mail of APILAM