title: Novel virtual hepatectomy is useful for evaluation of the portal territory for anatomical sectionectomy, segmentectomy, and hemihepatectomy.
abstract: BACKGROUND
  The novel technique of virtual hepatectomy is useful for evaluation of the portal territory of the liver, since this software program includes functions for liver surgery planning. We evaluated the accuracy of virtual hepatectomy for anatomical hepatectomy.
  
  
  METHODS
  Between 2010 and 2011, 92 patients with liver tumors underwent virtual hepatectomy preoperatively. The predicted liver volume was compared with the actual liver volume among patients who underwent anatomical sectionectomy, segmentectomy, and hemihepatectomy.
  
  
  RESULTS
  Ninety of 92 patients underwent anatomical hepatectomy on the basis of virtual hepatectomy. According to the surgical procedure, the predicted liver resection volume showed a strong correlation with the actual liver volume in patients who underwent sectionectomy (r = 0.985, p < 0.0001, n = 44, median error rate 9 %), segmentectomy (r = 0.949, p < 0.0001, n = 17, median error rate 12 %), and hemihepatectomy (r = 0.967, p < 0.0001, n = 29, median error rate 7 %).
  
  
  CONCLUSIONS
  The novel technique of virtual hepatectomy is useful for evaluation of the portal territory for anatomical sectionectomy, segmentectomy, and hemihepatectomy.
authors.affiliation: Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University, Kawada 8-1, Shinjuku-ku, Tokyo, 162-8666, Japan. ariizumi@ige.twmu.ac.jp
authors.forename: Shun-Ichi
authors.initials: S
authors.lastname: Ariizumi
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Takahashi
authors.forename: Yoshihito
authors.initials: Y
authors.lastname: Kotera
authors.forename: Akiko
authors.initials: A
authors.lastname: Omori
authors.forename: Godai
authors.initials: G
authors.lastname: Yoneda
authors.forename: Han
authors.initials: H
authors.lastname: Mu
authors.forename: Satoshi
authors.initials: S
authors.lastname: Katagiri
authors.forename: Hiroto
authors.initials: H
authors.lastname: Egawa
authors.forename: Masakazu
authors.initials: M
authors.lastname: Yamamoto
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006498:Hepatectomy / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D025321:Surgery, Computer-Assisted; D016896:Treatment Outcome; D014584:User-Computer Interface