Significantly more and smaller liver tumors can be detected by contrast-enhanced MRI when compared to whole-body FDG PET, say researchers from Massachusetts General Hospital in Boston.
For the study, the researchers analyzed 79 liver tumors in 30 patients. MRI detected all 79 of the lesions, of which 33 were less than 1 cm. PET detected 65 lesions, of which only 12 were less than 1 cm. In a per-lesion analysis, MRI had an accuracy rate of 75.5% compared to 64.1% for PET.
“FDG PET has been shown to be an excellent tool for gastrointestinal cancer staging, but its role in the detection of liver metastases had not been established. Contrast-enhanced MRI, on the other hand, is considered a sensitive imaging technique for liver lesion depiction,” said Dushyant V. Sahani, MD, lead author of the study. “We compared the two because we wanted to determine which imaging method was better for finding liver metastases,” he said.
Jason Ocker | EurekAlert!
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