title: Does the right inferior phrenic artery have a supplying role in liver cirrhosis without hepatocellular carcinoma? A 64-slice CT study.
abstract: OBJECTIVE
  To investigate whether the right inferior phrenic artery (RIPA) has a role in supplying the liver in cirrhotic patients without hepatocellular carcinoma (HCC) using 64-slice computed tomography (CT).
  
  
  METHODS
  Fifty-eight consecutive cirrhotic patients were categorized into two groups in regard to the absence (group 1, n=33) or presence of portal vein thrombosis (group 2, n=25). In addition, 35 patients without liver disease were included as a control group (group 0). The diameters of the RIPA and left inferior phrenic artery (LIPA) were measured in the ascending portion of these vessels using arterial-phase CT images. The discrepancy between the diameters of the RIPA and LIPA were calculated. The diameters of the RIPA and LIPA and the discrepancy between the diameters of the RIPA and LIPA were then compared.
  
  
  RESULTS
  The characteristics of all RIPA and LIPA were visualized. The diameter of the LIPA among the three groups was not significantly different (P = 0.363). The mean diameters of the LIPA were 1.8±0.19, 1.8±0.22, and 1.7±0.38 mm for groups 0, 1, and 2, respectively. The diameter of the RIPA was significantly greater (2.1±0.54 mm) in groups 1 and 2 (1.9±0.19 mm) than in group 0 (1.8±0.18 mm). There was significantly difference between groups 0 and 2 (P = 0.003), and groups 1 and 2 (P = 0.01) with regard to the discrepancy of the diameters of RIPA and LIPA.
  
  
  CONCLUSIONS
  The RIPA may contribute to the blood supply of the liver in cirrhotic patients, especially those with portal venous thrombosis.
authors.affiliation: Department of Radiology, Türkiye Yüksek İhtisas Hospital, Ankara, Turkey. nilgunisiksalan@yahoo.com
authors.forename: Nilgün Işıksalan
authors.initials: NI
authors.lastname: Ozbülbül
authors.forename: Mehmet
authors.initials: M
authors.lastname: Yurdakul
authors.forename: Muharrem
authors.initials: M
authors.lastname: Tola
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000704:Analysis of Variance; D000792:Angiography / Q000295:instrumentation / Q000379:methods; D006528:Carcinoma, Hepatocellular; D016022:Case-Control Studies; D003964:Diaphragm / Q000098:blood supply; D005260:Female; D006801:Humans; D008099:Liver / Q000098:blood supply* / Q000000981:diagnostic imaging; D008103:Liver Cirrhosis / Q000000981:diagnostic imaging* / Q000473:pathology*; D008113:Liver Neoplasms; D008297:Male; D008875:Middle Aged; D061330:Multidetector Computed Tomography / Q000379:methods*; D011446:Prospective Studies; D012039:Regional Blood Flow / Q000502:physiology; D012720:Severity of Illness Index