TotalSeg Cardiac (Dataset293) — 19-class CT segmentation

TotalSegmentator v2.3 head/neck submodel. 18 fg classes: heart, aorta, pulmonary vein, brachiocephalic trunk, L/R subclavian + common carotid, L/R brachiocephalic vein, atrial appendage L, SVC, IVC, portal+splenic vein, L/R iliac artery+vein. Apache-2.0. thyroid + cricoid cartilage, hyoid, L/R zygomatic arch, L/R styloid process, L/R internal carotid artery, L/R internal jugular vein. Apache-2.0 weights. Patch [96,160,160] @ [1.0, 0.75, 0.75] mm, cubic B-spline resample, NibabelIOWithReorient, CTNormalization. Phase B verified 100.0000% argmax voxel-equal vs Python predict_from_files (cta_brain trivial-bg case).