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Abstract #1184

Assessment of Inter-Operator Agreement in Manual Image-Segmentation of Femoral Cartilage

Hon J. Yu 1,2 , Taiki Nozaki 1 , Yasuhito Kaneko 1 , Kayleigh Kaneshiro 1 , Ran Schwarzkopf 3 , and Hiroshi Yoshioka 1

1 Radiological Sciences, University of California, Irvine, CA, United States, 2 Tu & Yuen Center for Functional Onco-Imaging, University of California, Irvine, CA, United States, 3 Orthopaedic Surgery, University of California, Irvine, CA, United States

Geometrical-attribute based comparison of inter-operator manual segmentation is demonstrated using MRI of articular cartilage. When combined with Bland-Altman analysis rather than more commonly used regression approach, such inter-operator assessment could provide a more insightful comparison that is not biased by the underlying segmentation-based quantity (e.g., T2 or T1 lower case Greek rho value) and can be also extended to segmentation assessment based on semi-/automatic schemes.

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