Russell Norman Low1,2, Matthew J. Austin3, Lloyd Estkowski4, Richard Ehman5
1Sharp and Children's MRI Center, San Diego, CA, United States; 2San Diego Imaging, San Diego, CA, United States; 3Radiology, Universit y of California at San Diego, San Diego, CA, United States; 4General Electric Healthcare; 5Mayo Clinic
We present our intial clinical experience using MR elastography in oncology patients to depict peritoneal tumor. Peritoneal tumors in the upper abdomen demonstrated increased mean shear stiffness compared to the liver as was depicted on color encoded spatial maps. On a per patient basis MRE demonstrated a .87 sensitivity, .78 specifity, and .82 accurcy. In the quantitative anlysis the mean shear stiffness of peritoneal tumor was 4.43 kPA and the mean shear stiffness of the adjancent liver was 2.36 kPa.