Saturday, August 7, 2010
Respiratory motion artifact: Mushroom
58 year old lady with h/o endometrial carcinoma. PETCT done for re-staging.
Arrow points to liver 'mushroom' artifact due to respiratory motion. This artifact results from incorrect attenuation correction from CT images acquired during respiratory motion. Familiarity with the artifact or review of the uncorrected PET images will help to avoid misinterpretation.
Atlas of PET/CT: A Quick Guide to Image Interpretation