title: Iodized oil uptake assessment with cone-beam CT in chemoembolization of small hepatocellular carcinomas.
abstract: OBJECTIVE
  To evaluate the utility of assessing iodized oil uptake with cone-beam computed tomography (CT) in transarterial chemoembolization (TACE) for small hepatocellular carcinoma (HCC).
  
  
  METHODS
  Cone-beam CT provided by a biplane flat-panel detector angiography suite was performed on eighteen patients (sixteen men and two women; 41-76 years; mean age, 58.9 years) directly after TACE for small HCC (26 nodules under 30 mm; mean diameter, 11.9 mm; range, 5-28 mm). The pre-procedural locations of the tumors were evaluated using triphasic multi-detector row helical computed tomography (MDCT). The tumor locations on MDCT and the iodized oil uptake by the tumors were analyzed on cone-beam CT and on spot image directly after the procedures.
  
  
  RESULTS
  All lesions on preprocedural MDCT were detected using iodized oil uptake in the lesions on cone-beam CT (sensitivity 100%, 26/26). Spot image depicted iodized oil uptake in 22 of the lesions (sensitivity 85%). The degree of iodized oil uptake was overestimated (9%, 2/22) or underestimated (14%, 3/22) on spot image in five nodules compared with that of cone-beam CT.
  
  
  CONCLUSIONS
  Cone-beam CT is a useful and convenient tool for assessing the iodized oil uptake of small hepatic tumors (< 3 cm) directly after TACE.
authors.affiliation: Department of Radiology, Pusan National University Hospital, Yangsan, South Korea.
authors.forename: Ung Bae
authors.initials: UB
authors.lastname: Jeon
authors.forename: Jun Woo
authors.initials: JW
authors.lastname: Lee
authors.forename: Ki Seok
authors.initials: KS
authors.lastname: Choo
authors.forename: Chang Won
authors.initials: CW
authors.lastname: Kim
authors.forename: Suk
authors.initials: S
authors.lastname: Kim
authors.forename: Tae Hong
authors.initials: TH
authors.lastname: Lee
authors.forename: Yeon Joo
authors.initials: YJ
authors.lastname: Jeong
authors.forename: Dae Hwan
authors.initials: DH
authors.lastname: Kang
mesh_terms: D000328:Adult; D000368:Aged; D006528:Carcinoma, Hepatocellular / Q000000981:diagnostic imaging / Q000628:therapy; D016461:Chemoembolization, Therapeutic / Q000379:methods*; D054893:Cone-Beam Computed Tomography / Q000379:methods*; D003287:Contrast Media / Q000378:metabolism*; D005260:Female; D006801:Humans; D007459:Iodized Oil / Q000378:metabolism*; D008113:Liver Neoplasms / Q000000981:diagnostic imaging / Q000628:therapy; D008297:Male; D008875:Middle Aged
chemical_list: D003287:Contrast Media; D007459:Iodized Oil