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 21 November 2017

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News

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

There is no significant difference in detection of liver metastases using MR or PET imaging, find researchers in the March issue of the Journal of Magnetic Resonance Imaging.

News image

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In this study, researchers from the United States compared the accuracy of fluoro-18-deoxyglucose positron emission tomography (FDG-PET) with dynamic-enhanced magnetic resonance imaging (MRI) scans in the diagnosis of liver metastases.

The research team assessed 30 consecutive patients, with known or suspected metastatic lesions. Patients were scanned using both MRI and FGD-PET.

They used histopathology and/or clinical outcome, including cross-sectional imaging follow up, as a gold standard.

The difference between the 2 methods was not significant.
Journal of Magnetic Resonance Imaging

The researchers found that of the 30 patients, 16 were positive by pathology and/or clinical outcome, while 14 were negative for liver metastases.

They determined that the sensitivity, specificity, and positive and negative predictive values on MRI were 86%, 100%, 100%, and 89%, respectively. These compared to 71%, 94%, 91%, and 79% on FDG-PET.

The team found that the difference between the 2 methods was not significant.

Dr Ming Yang's team concluded, "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."

J Magn Reson Imaging 2003; 17: 343-9
24 February 2003

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