title: Hepatic arterial supply in 1297 CT-angiographies.
abstract: OBJECTIVE
  Analysis, evaluation and classification of hepatic arterial supply variants and determination of their frequency distribution in CT-angiographies.
  
  
  METHODS
  CT-angiographies of 1,568 patients were evaluated retrospectively for the period between January 1, 2010 and August 30, 2012. The hepatic arterial anatomy was assessed and categorized according to Michels's classification. So far unclassified variants were considered separately.
  
  
  RESULTS
  CT-angiographies of 1297 patients were included in the study. Type I according to Michels was seen in 937 cases (72.2 %), followed by type V in 114 patients (8.8 %) and type III in 83 patients (6.4 %). Type X could not be found in any of the patients. Not yet classified variants were discovered in 26 patients. The most frequent variant in this connection was a right hepatic artery originating from the superior mesenteric artery with the left hepatic artery originating from the left gastric artery (n = 10).
  
  
  CONCLUSIONS
  Michels's classification could be largely confirmed on the basis of a radiologically examined patient population. Not yet classified variants were categorized into subgroups of the existing classification.
  
  
  CONCLUSIONS
  Imaging of hepatic arterial supply variants using CT-angiography. Distribution of variations of arterial liver supply in a general patient population. Expansion of Michels's classification to include new variations of the arterial liver supply.
authors: Department of Radiology, Jena University Hospital, Jena, Germany.
authors: C
authors: C
authors: Löschner
authors: Department of Radiology, Charité-Universitätsmedizin Berlin, Berlin, Germany.
authors: S N
authors: SN
authors: Nagel
authors: Department of Radiology, Jena University Hospital, Jena, Germany.
authors: S
authors: S
authors: Kausche
authors: Department of Radiology, Jena University Hospital, Jena, Germany.
authors: U
authors: U
authors: Teichgräber
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D063405:Anatomic Variation; D000792:Angiography / Q000379:methods*; D005260:Female; D006499:Hepatic Artery / Q000002:abnormalities / Q000000981:diagnostic imaging*; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D021621:Imaging, Three-Dimensional; D008099:Liver / Q000098:blood supply*; D016031:Liver Transplantation; D019520:Living Donors; D008297:Male; D008875:Middle Aged; D012016:Reference Values; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed / Q000379:methods*; D055815:Young Adult