A 38-year-old pregnant woman at 26-week gestation with left breast cancer requested an FDG PET/CT scan for more detailed staging of her breast cancer before treatment. After discussing the potential radiation-related risk and estimating possible absorbed dose to fetus, she consented for examination. By using a low-radiation-dose CT protocol and administration of routine 370-MBq FDG without diuresis, the resultant calculated (using existing models to predict fetal radiation exposure) fetal dose from CT and FDG would be 3.60 mGy and 6.29 mGy, respectively. In contrast to the existing few literatures, our case also demonstrated previously unreported uptake in the fetal kidneys.
From the *Department of Nuclear Medicine and PET Center, China Medical University Hospital, Taichung, Taiwan; †Department of Biomedical Imaging and Radiological Science, China Medical University, Taichung, Taiwan; ‡Department of Nuclear Medicine, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu City, Taiwan; §China Medical University, Taichung, Taiwan; and ¶School of Medicine, China Medical University, Taichung, Taiwan.
Received for publication June 21, 2011; revision accepted December 20, 2011.
Y-C.W. and C-H.K. contributed equally to this work.
Conflicts of interest and sources of funding: none declared.
Reprints: Chia-Hung Kao, MD, Department of Nuclear Medicine and PET Center, China Medical University Hospital, No. 2, Yuh-Der Rd, Taichung 404, Taiwan. E-mail: email@example.com.