A matrix S = (sij) ∈ R n×n is said to determine a transitional measure for a digraph Γ on n vertices if for all i, j, k ∈ {1, . . . , n}, the transition inequality sij sjk ≤ sik sjj holds and reduces to the equality (called the graph bottleneck identity) if and only if every path in Γ from i to k contains j. We show that every positive transitional measure produces a distance by means of a loga...

PurposeTo compare the diagnostic performance of texture analysis (TA) against visual qualitative assessment in differentiation spondyloarthritis (SpA) from degenerative changes sacroiliac joints (SIJ).MethodNinety patients referred for suspected inflammatory lower back pain rheumatology department were retrospectively included at our university hospital institution. MRI 3 T lumbar spine and SIJ...

Background Imaging of the sacroiliac joints, especially with magnetic resonance imaging (MRI), is an important tool for early diagnosis axial spondyloarthritis (axSpA). Interpretation joint can vary according to readers’ experience, but it currently unknown if and how assessment differs between academic hospitals community based rheumatological care. Objectives To investigate (1) agreement loca...