Skellytour Cortical/Trabecular (Dataset850) — 3-class cortical/trabecular subsegmentation

Skellytour Dataset815 (Mann et al. Radiology AI 2025). 38 fg classes: SKULL, PELVIS, STERNUM, L/R {femur, humerus, scapula, clavicle, ribs(mass)}, vert_1..24, ARTIFACTS. Apache-2.0 weights. Trained on 75 myeloma CT cohort. Patch [160,112,96] @ [2.0, 0.977, 0.977] mm anisotropic, cubic B-spline resample, SimpleITKIO no-reorient, CTNormalization (μ=418.7 σ=412.2 — bone HU range). Anisotropic L0 kernel [1,3,3] + asymmetric strides via `set_shape_nd_kernels`. Beats TotalSeg D297 on internal test (DSC 0.94 vs 0.90).