SPIO-MR imaging versus double-phase spiral CT in detecting malignant lesions of the liver

Ralf Dietrich Müller*, K. Vogel, K. Neumann, H. Hirche, J. Barkhausen, F. Stöblen, H. Henrich, R. Langer

*Corresponding author for this work
39 Citations (Scopus)


Purpose: To assess the diagnostic performance of superparamagnetic iron oxide MR (SPIO-MR) imaging compared with double-phase spiral CT in detecting liver metastases and hepatocellular carcinoma. Material and Methods: Thirty-eight patients with a total of 144 malignant lesions of the liver were examined by CT and SPIO-MR. After definition of a gold standard by a panel of experts, the patient images were randomized and presented to a blinded jury of 5 independent observers whose task was to identify as many lesions as possible. The results were tested for statistical significance using multifactorial analysis of variance (α=5%). Results: SPIO-MR produced the highest detection rate and was significantly superior (p<0.05) to unenhanced MR imaging and double spiral-phase contrast-enhanced CT (DPS-CECT). Maximum performance in DPS-CECT was obtained during the portal venous contrast phase but was significantly inferior to SPIO-MR imaging. The scores for unenhanced CT and unenhanced MR were significantly lower than for the corresponding enhanced procedures. SPIO-MR imaging produced a higher incidence of false-positive findings (n=39). Conclusion: SPIO-MR produced a significantly better detection rate for malignant focal liver lesions compared with double-phase spiral DPS-CECT but was associated with a higher rate of false-positive findings.

Original languageEnglish
JournalActa Radiologica
Issue number6
Pages (from-to)628-635
Number of pages8
Publication statusPublished - 01.01.1999


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