Abstract #3584
Interobserver agreement in relative liver lesion signal intensity on hepatobiliary phase imaging with gadoxetic acid (Gd-EOB-DTPA)
Sharon Ngu 1 , Lizza Lebron-Zapata 1 , Christy Pomeranz 1,2 , Seth Katz 1 , Scott Gerst 1 , Michael Sohn 1 , Junting Zheng 3 , Chaya Moskowitz 3 , and Richard K. G. Do 1
1
Radiology, Memorial Sloan-Kettering Cancer
Center, New York, New York, United States,
2
New
York Presbyterian Hospital - Weill Cornell, New York,
New York, United States,
3
Department
of Epidemiology and Biostatistics, Memorial
Sloan-Kettering Cancer Center, New York, New York,
United States
A retrospective study was conducted to assess
interobserver agreement in the qualitative and
quantitative evaluation of liver lesions signal
intensity (SI) on delayed hepatobiliary phase MRI with
gadoxetic acid (Gd-EOB-DTPA). In 50 patients, four
readers (2 fellows, 2 experts) assessed lesion SI
compared to liver on a 4 point scale and measured SI of
the lesion and adjacent liver parenchyma. Result showed
almost perfect agreement in expert readers and
substantial agreement among fellows. A cutoff point of
lesion to liver SI ratio of 0.876 was found to
differentiate hypointense from iso- to hyperintense
liver lesions on delayed hepatobiliary phase.
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