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Comparison of MR and PET imaging for the evaluation of liver metastases

✍ Scribed by Ming Yang; Diego R. Martin; Nevzat Karabulut; Mathis P. Frick

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
352 KB
Volume
17
Category
Article
ISSN
1053-1807

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✦ Synopsis

Purpose:

To compare the accuracy of fluoro-18-deoxyglucose positron emission tomography (fdg-pet) and dynamic-enhanced magnetic resonance imaging (mri) scans in the diagnosis of liver metastatic lesions from colon and other sources.

Materials and methods:

Thirty consecutive patients with known or suspected metastatic lesions were scanned by both mri and pet. histopathology and/or clinical outcome, including cross-sectional imaging follow up, were used as a gold standard.

Results:

Of 30 patients, 16 were positive by pathology and/or clinical outcome and 14 were negative for liver metastases. the sensitivity, specificity, and positive and negative predictive values on mri were 85.7%, 100%, 100%, and 89%, respectively, compared to 71%, 93.7%, 90.9%, and 79% on fdg-pet. the difference between the two methods was not significant (x(2) = 0.2, p > 0.05).

Conclusion:

Our study showed no significant difference in detection of liver metastases using mri or fdg-pet. however, mri has advantages in spatial resolution and lesion characterization.

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