title: Limitation of Virtual Noncontrasted Images in Evaluation of a Liver Lesion Status Post Transarterial Chemoembolization.
abstract: The authors describe a case of a patient with a solitary hepatocellular carcinoma status post transarterial chemoembolization. Follow-up imaging was performed using dual-energy computed tomography. The study was performed with and without contrast and a virtual noncontrast data set was constructed from the postcontrast images. The evaluation of this patient status post transarterial chemoembolization with virtual noncontrast alone erroneously suggested enhancement and viable tumor. However, examination of true noncontrast images revealed these findings to be due to the subtraction of iodine in Ethiodol within the treated lesion.
authors.affiliation: From the Medical University of South Carolina, Department of Radiology, Division of Abdominal Imaging, Charleston, SC.
authors.forename: Brian P
authors.initials: BP
authors.lastname: Flemming
authors.forename: Carlo N
authors.initials: CN
authors.lastname: De Cecco
authors.forename: Andrew D
authors.initials: AD
authors.lastname: Hardie
mesh_terms: D006528:Carcinoma, Hepatocellular / Q000000981:diagnostic imaging* / Q000628:therapy*; D016461:Chemoembolization, Therapeutic / Q000379:methods*; D003287:Contrast Media; D004998:Ethiodized Oil; D006801:Humans; D008113:Liver Neoplasms / Q000000981:diagnostic imaging* / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D015900:Radiography, Dual-Energy Scanned Projection / Q000379:methods*; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D014584:User-Computer Interface
chemical_list: D003287:Contrast Media; D004998:Ethiodized Oil