{
 "scheme": "CTSpinoPelvic1K v6 (VerSe-native)",
 "source_of_truth": "scripts/label_scheme.py",
 "ignore_label": 255,
 "id_to_name": {
  "0": "background",
  "1": "C1",
  "2": "C2",
  "3": "C3",
  "4": "C4",
  "5": "C5",
  "6": "C6",
  "7": "C7",
  "8": "T1",
  "9": "T2",
  "10": "T3",
  "11": "T4",
  "12": "T5",
  "13": "T6",
  "14": "T7",
  "15": "T8",
  "16": "T9",
  "17": "T10",
  "18": "T11",
  "19": "T12",
  "20": "L1",
  "21": "L2",
  "22": "L3",
  "23": "L4",
  "24": "L5",
  "25": "L6",
  "26": "sacrum",
  "27": "coccyx",
  "28": "T13",
  "29": "S1",
  "30": "left_hip",
  "31": "right_hip",
  "32": "femur_left",
  "33": "femur_right",
  "34": "rib_left_1",
  "35": "rib_left_2",
  "36": "rib_left_3",
  "37": "rib_left_4",
  "38": "rib_left_5",
  "39": "rib_left_6",
  "40": "rib_left_7",
  "41": "rib_left_8",
  "42": "rib_left_9",
  "43": "rib_left_10",
  "44": "rib_left_11",
  "45": "rib_left_12",
  "46": "rib_right_1",
  "47": "rib_right_2",
  "48": "rib_right_3",
  "49": "rib_right_4",
  "50": "rib_right_5",
  "51": "rib_right_6",
  "52": "rib_right_7",
  "53": "rib_right_8",
  "54": "rib_right_9",
  "55": "rib_right_10",
  "56": "rib_right_11",
  "57": "rib_right_12",
  "58": "iliolumbar_left",
  "59": "iliolumbar_right",
  "60": "nerve_L4_left",
  "61": "nerve_L4_right",
  "62": "nerve_L5_left",
  "63": "nerve_L5_right",
  "64": "nerve_S1_left",
  "65": "nerve_S1_right",
  "66": "psoas_left",
  "67": "psoas_right",
  "68": "aorta",
  "69": "inferior_vena_cava",
  "70": "iliac_artery_left",
  "71": "iliac_artery_right",
  "72": "iliac_vena_left",
  "73": "iliac_vena_right",
  "74": "rib_left_lumbar",
  "75": "rib_right_lumbar",
  "76": "hardware",
  "77": "hardware_cage",
  "78": "hardware_screw_rod",
  "79": "hardware_plate",
  "80": "hardware_arthroplasty",
  "81": "hardware_si_screw",
  "82": "hardware_osteosynthesis",
  "255": "ignore"
 },
 "name_to_id": {
  "background": 0,
  "C1": 1,
  "C2": 2,
  "C3": 3,
  "C4": 4,
  "C5": 5,
  "C6": 6,
  "C7": 7,
  "T1": 8,
  "T2": 9,
  "T3": 10,
  "T4": 11,
  "T5": 12,
  "T6": 13,
  "T7": 14,
  "T8": 15,
  "T9": 16,
  "T10": 17,
  "T11": 18,
  "T12": 19,
  "L1": 20,
  "L2": 21,
  "L3": 22,
  "L4": 23,
  "L5": 24,
  "L6": 25,
  "sacrum": 26,
  "coccyx": 27,
  "T13": 28,
  "S1": 29,
  "left_hip": 30,
  "right_hip": 31,
  "femur_left": 32,
  "femur_right": 33,
  "rib_left_1": 34,
  "rib_left_2": 35,
  "rib_left_3": 36,
  "rib_left_4": 37,
  "rib_left_5": 38,
  "rib_left_6": 39,
  "rib_left_7": 40,
  "rib_left_8": 41,
  "rib_left_9": 42,
  "rib_left_10": 43,
  "rib_left_11": 44,
  "rib_left_12": 45,
  "rib_right_1": 46,
  "rib_right_2": 47,
  "rib_right_3": 48,
  "rib_right_4": 49,
  "rib_right_5": 50,
  "rib_right_6": 51,
  "rib_right_7": 52,
  "rib_right_8": 53,
  "rib_right_9": 54,
  "rib_right_10": 55,
  "rib_right_11": 56,
  "rib_right_12": 57,
  "iliolumbar_left": 58,
  "iliolumbar_right": 59,
  "nerve_L4_left": 60,
  "nerve_L4_right": 61,
  "nerve_L5_left": 62,
  "nerve_L5_right": 63,
  "nerve_S1_left": 64,
  "nerve_S1_right": 65,
  "psoas_left": 66,
  "psoas_right": 67,
  "aorta": 68,
  "inferior_vena_cava": 69,
  "iliac_artery_left": 70,
  "iliac_artery_right": 71,
  "iliac_vena_left": 72,
  "iliac_vena_right": 73,
  "rib_left_lumbar": 74,
  "rib_right_lumbar": 75,
  "hardware": 76,
  "hardware_cage": 77,
  "hardware_screw_rod": 78,
  "hardware_plate": 79,
  "ignore": 255
 },
 "notes": {
  "74": "A rib articulating with a LUMBAR vertebra. Given its own class rather than being forced to be 'rib 12': a 13th rib is a finding, and numbering it as the twelfth consumed the id the T12 rib needed.",
  "75": "As 74, right side.",
  "76": "Surgical instrumentation whose subtype is not distinguished. Neither bone nor any anatomical class; labelled rather than ignored because a cage bridging a disc space makes two vertebrae look fused to any distance measurement, and that must stay separable from congenital fusion.",
  "77": "Interbody cage or spacer.",
  "78": "Pedicle screws and rods.",
  "79": "Plates and other fixation."
 },
 "hardware_note": "Surgical instrumentation, populated from v6 onward (declared but empty in v1-v5). Metal outranks bone: where an implant lay inside a vertebra, hip or femur label, the voxel belongs to the implant. 80 (arthroplasty) REPLACES a joint; 82 (osteosynthesis) holds parts of the SAME bone together -- the distinction matters because pelvic incidence and pelvic tilt are measured from the femoral head, which a prosthesis replaces and fixation does not. Filter on manifest.hardware_labelled before any gap-based analysis: a cage-bridged interspace reads as 'no gap' exactly as a congenitally fused transitional vertebra does."
}