Abstract
Double contrast MR imaging with combined use of chondroitin sulfate iron colloid (CSIC) and Gd-DTPA was attempted in 3 cases of cholangiocellular carcinoma (CCC). In all cases, nonenhanced spin echo T1- and T2-weighted images, and T1-weighted images after i.v. injection of Gd-DTPA were obtained. Within one week, the MR sequences were repeated one hour after i.v. injection of CSIC. Double contrast (CSIC/Gd-DTPA) T1-weighted imaging was evaluated and compared with the other sequences in terms of tumor detectability, tumor spreading and tumor characterization. Double contrast MR imaging was comparable in tumor detectability and superior as to the evaluation of spreading and characterization to the other MR imaging modalities.
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