title: Balloon-occluded arterial stump pressure before balloon-occluded transarterial chemoembolization.
abstract: OBJECTIVE
  To evaluate balloon-occluded arterial stump pressure (BOASP), which is responsible for effective balloon-occluded transarterial chemoembolization (B-TACE), at each hepatic arterial level before B-TACE using a 1.8-French tip microballoon catheter for unresectable hepatocellular carcinoma (HCC).
  
  
  METHODS
  The BOASP at various embolization portions was retrospectively investigated. "Selective" and "non-targeted" BOASP was defined as the BOASP at the subsegmental or segmental artery and the lobar artery, respectively.
  
  
  RESULTS
  The measurement of the BOASP was carried out in 87 arteries in 47 patients. BOASP > 64 mmHg was revealed in the caudate lobe artery (A1) and the left medial segmental (A4), right anterior superior segmental (A8), anterior segmental, right and left hepatic arteries. Significant difference was noted in the incidence of BOASP above 64 mmHg between "non-targeted" and "selective" BOASP (p = 0.01). "Non-targeted" BOASP was significantly greater than "selective" BOASP (p = 0.0147). In addition, the BOASP in A1, 4, 8 and the anterior segmental arteries were significantly greater than in the other subsegmental and segmental arteries (p = 0.0007).
  
  
  CONCLUSIONS
  "Non-targeted" B-TACE should be avoided to perform effective B-TACE and "selective" B-TACE at A1, 4, 8 and the anterior segmental arteries may become less effective than at the other segmental or subsegmental arteries.
authors.affiliation: a Department of Radiology , Tokai University Hachioji Hospital, Tokai University School of Medicine , Tokyo , Japan .
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Matsumoto
authors.affiliation: a Department of Radiology , Tokai University Hachioji Hospital, Tokai University School of Medicine , Tokyo , Japan .
authors.forename: Jun
authors.initials: J
authors.lastname: Endo
authors.affiliation: a Department of Radiology , Tokai University Hachioji Hospital, Tokai University School of Medicine , Tokyo , Japan .
authors.forename: Kazunobu
authors.initials: K
authors.lastname: Hashida
authors.affiliation: b Department of Gastroenterology , Tokai University Hachioji Hospital, Tokai University School of Medicine , Tokyo , Japan , and.
authors.forename: Hajime
authors.initials: H
authors.lastname: Mizukami
authors.affiliation: b Department of Gastroenterology , Tokai University Hachioji Hospital, Tokai University School of Medicine , Tokyo , Japan , and.
authors.forename: Junko
authors.initials: J
authors.lastname: Nagata
authors.affiliation: b Department of Gastroenterology , Tokai University Hachioji Hospital, Tokai University School of Medicine , Tokyo , Japan , and.
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Ichikawa
authors.affiliation: b Department of Gastroenterology , Tokai University Hachioji Hospital, Tokai University School of Medicine , Tokyo , Japan , and.
authors.forename: Seiichiro
authors.initials: S
authors.lastname: Kojima
authors.affiliation: b Department of Gastroenterology , Tokai University Hachioji Hospital, Tokai University School of Medicine , Tokyo , Japan , and.
authors.forename: Shinji
authors.initials: S
authors.lastname: Takashimizu
authors.affiliation: c Department of Radiology , Kochi University , Kohasu, Oko-cho, Nankoku , Kochi , Japan.
authors.forename: Takuji
authors.initials: T
authors.lastname: Yamagami
authors.affiliation: b Department of Gastroenterology , Tokai University Hachioji Hospital, Tokai University School of Medicine , Tokyo , Japan , and.
authors.forename: Norihito
authors.initials: N
authors.lastname: Watanabe
authors.affiliation: a Department of Radiology , Tokai University Hachioji Hospital, Tokai University School of Medicine , Tokyo , Japan .
authors.forename: Terumitsu
authors.initials: T
authors.lastname: Hasebe
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D062186:Arterial Pressure / Q000502:physiology*; D021721:Balloon Occlusion / Q000379:methods; D006528:Carcinoma, Hepatocellular / Q000628:therapy*; D016461:Chemoembolization, Therapeutic / Q000379:methods*; D005260:Female; D006499:Hepatic Artery; D006801:Humans; D008113:Liver Neoplasms / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies
keywords: Interventional radiology; balloon-occluded arterial stump pressure; balloon-occluded transarterial chemoembolization; hepatocellular carcinoma; microballoon catheter