Dynamic contrast-enhanced CT imaging of hepatocellular carcinoma in cirrhosis: feasibility of a prolonged dual-phase imaging protocol with tracer kinetics modeling.

Full Abstract

Dynamic contrast-enhanced (DCE) CT imaging of four patients with hepatocellular carcinoma (HCC) was performed using a dual-phase imaging protocol designed with initial rapid dynamic imaging to capture the initial increase in contrast medium enhancement in order to assess perfusion, followed by a delayed imaging phase with progressively longer intervals to monitor subsequent tissue enhancement behaviour in order to assess tissue permeability. The DCE CT images were analysed using a dual-input two-compartment distributed parameter model to yield separate estimates for blood flow and permeability, as well as fractional intravascular and extravascular volumes. The HCCs and surrounding cirrhotic liver tissues were found to exhibit enhancement curves that can be appropriately described by two distinct compartments separated by a semipermeable barrier. Early contrast arrival was also found for HCC as compared with background liver. These findings are consistent with the current understanding of sinusoidal capillarization and hepatocarcinogenesis.

Author information

Author/s: Koh, Tong San (TS); Thng, Choon Hua (CH); Hartono, Septian (S); Lee, Puor Sherng (PS); Choo, Su Pin (SP); Poon, Donald Y H (DY); Toh, Han Chong (HC); Bisdas, Sotirios (S);

Affiliation: School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, Singapore.

Journal and publication information

Publication Type: Journal Article; Research Support, Non-U.S. Gov't

Journal: European radiology (Eur Radiol), published in Germany. (Language: eng)

Reference: 2009-May; vol 19 (issue 5) : pp 1184-96

Dates: Created 2009/04/01; Completed 2009/08/14;

PMID: 19137312, status: MEDLINE (last retrieved date: 8/21/2009)

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