title: Extrahepatic Arteries Originating from Hepatic Arteries: Analysis Using CT During Hepatic Arteriography and Visualization on Digital Subtraction Angiography.
abstract: OBJECTIVE
  To investigate the prevalence and site of origin of extrahepatic arteries originating from hepatic arteries on early phase CT during hepatic arteriography (CTHA) was accessed. Visualization of these elements on digital subtraction hepatic angiography (DSHA) was assessed using CTHA images as a gold standard.
  
  
  METHODS
  A total of 943 patients (mean age 66.9 ± 10.3 years; male/female, 619/324) underwent CTHA and DSHA. The prevalence and site of origin of extrahepatic arteries were accessed using CTHA and visualized using DSHA.
  
  
  RESULTS
  In 924 (98.0%) patients, a total of 1555 extrahepatic branches, representing eight types, were found to originate from hepatic arteries on CTHA. CTHA indicated the following extrahepatic branch prevalence rates: right gastric artery, 890 (94.4%); falciform artery, 386 (40.9%); accessory left gastric artery, 161 (17.1%); left inferior phrenic artery (IPA), 43 (4.6%); posterior superior pancreaticoduodenal artery, 33 (3.5%); dorsal pancreatic artery, 26 (2.8%); duodenal artery, 12 (1.3%); and right IPA, 4 (0.4%). In addition, 383 patients (40.6%) had at least one undetectable branch on DSHA. The sensitivity, specificity, and accuracy of visualization on DSHA were as follows: RGA, 80.0, 86.8, and 80.4%; falciform artery, 53.9, 97.7, and 80.0%; accessory LGA, 64.6, 98.6, and 92.3%; left IPA, 76.7, 99.8, and 98.7%; PSPDA, 100, 99.7, and 99.9%; dorsal pancreatic artery, 57.7, 100, and 98.8%; duodenal artery, 8.3, 99.9, and 98.7%; and right IPA, 0, 100, and 99.6%, respectively.
  
  
  CONCLUSIONS
  Extrahepatic arteries originating from hepatic arteries were frequently identified on CTHA images. These arteries were frequently overlooked on DSHA.
authors.affiliation: Department of Radiology, Kanazawa University Graduate School of Medical Science, 13-1 Takara-machi, Kanazawa, 920-8640, Japan. ozakik-rad@umin.org.
authors.forename: Kumi
authors.initials: K
authors.lastname: Ozaki
authors.affiliation: Department of Quantum Medicine Technology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kobayashi
authors.affiliation: Department of Radiology, Kanazawa University Graduate School of Medical Science, 13-1 Takara-machi, Kanazawa, 920-8640, Japan.
authors.forename: Osamu
authors.initials: O
authors.lastname: Matsui
authors.affiliation: Department of Radiology, Kanazawa University Graduate School of Medical Science, 13-1 Takara-machi, Kanazawa, 920-8640, Japan.
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Minami
authors.affiliation: Department of Radiology, Kanazawa University Graduate School of Medical Science, 13-1 Takara-machi, Kanazawa, 920-8640, Japan.
authors.forename: Wataru
authors.initials: W
authors.lastname: Koda
authors.affiliation: Department of Radiology, Kanazawa University Graduate School of Medical Science, 13-1 Takara-machi, Kanazawa, 920-8640, Japan.
authors.forename: Toshifumi
authors.initials: T
authors.lastname: Gabata
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015901:Angiography, Digital Subtraction / Q000379:methods*; D000072226:Computed Tomography Angiography / Q000379:methods*; D005260:Female; D005471:Fluoroscopy; D006499:Hepatic Artery / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D006801:Humans; D008099:Liver / Q000098:blood supply; D008113:Liver Neoplasms / Q000098:blood supply; D008297:Male; D008875:Middle Aged; D011172:Portography / Q000379:methods*; D012680:Sensitivity and Specificity; D055815:Young Adult
keywords: CT during hepatic arteriography; Digital subtraction hepatic angiography; Extrahepatic arteries originating from hepatic arteries; Transcatheter arterial chemoembolization