Hepatic computed tomography perfusion: Comparison of maximum slope and dual-input single-compartment methods

Tomonori Kanda, Takeshi Yoshikawa, Yoshiharu Ohno, Naoki Kanata, Hisanobu Koyama, Munenobu Nogami, Daisuke Takenaka, Kazuro Sugimura

研究成果: Article査読

7 被引用数 (Scopus)

抄録

Purpose: The aim of the study was to compare two analytical methods-maximum slope (MS) and the dualinput single-compartment model (CM)-in computed tomography (CT) measurements of hepatic perfusion and to assess the effects of extrahepatic systemic factors. Materials and methods: A total of 109 patients underwent hepatic CT perfusion. The scans were conducted at the hepatic hilum 7-77 s after administration of contrast material. Hepatic arterial perfusion (HAP) and portal perfusion (HPP) (ml/min/100 ml) and the arterial perfusion fraction (APF, %) were calculated with the two methods, followed by correlation assessment. Partial correlation analysis was used to assess the effects on hepatic perfusion values by various factors, including age, sex, risk of cardiovascular disease, compensation for respiratory misregistration, arrival time of contrast material at the abdominal aorta, transit time from abdominal aorta to hepatic parenchyma, and liver dysfunction. Results: The mean HAPs, HPPs, and APFs were, respectively, 31.4, 104.2, and 23.9 for MS and 27.1, 141.3, and 22.1 for CM. HAP and APF showed significant (P < 0.0001) and moderate correlation (γ = 0.417 and 0.548) and HPP showed poor correlation (γ = 0.172) between the two methods. While MS showed weak correlations (γ = -0.39 to 0.34; P < 0.001 to <0.02) between multiple extrahepatic factors and perfusion values, CM showed weak correlation only between the patients' sex and HAP (γ = 0.31, P = 0.001). Conclusion: Hepatic perfusion values estimated by the two methods are not interchangeable. CM is less susceptible to extrahepatic systemic factors.

本文言語English
ページ(範囲)714-719
ページ数6
ジャーナルJapanese journal of radiology
28
10
DOI
出版ステータスPublished - 12-2010
外部発表はい

All Science Journal Classification (ASJC) codes

  • 放射線学、核医学およびイメージング

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