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        ["Maxillary veins.l", 3.8, 0]
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    {
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      "ko": "오른쪽 볼림프절",
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        ["(Accessory parotid gland).r", 7.9, 0]
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    {
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    {
      "name": "Lateral superior jugular node.r",
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        "hilumAdded": false,
        "baselineTriangles": null,
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    {
      "name": "Levator veli palatini.l",
      "ko": "왼쪽 입천장올림근",
      "category": "muscles",
      "description": "관자뼈 바위부분과 귀관 연골에서 아래·앞·안쪽으로 내려와 입천장널힘줄에 붙습니다. 삼킬 때와 말할 때 물렁입천장을 올려 코인두를 막습니다. 인두신경얼기를 통해 미주신경이 지배합니다. BodyParts3D 4.0에서 가져와 정합했으며, 아틀라스 물렁입천장 표면에서 약 1.4 mm 떨어져 끝납니다.",
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    {
      "name": "Levator veli palatini.r",
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      "category": "muscles",
      "description": "관자뼈 바위부분과 귀관 연골에서 아래·앞·안쪽으로 내려와 입천장널힘줄에 붙습니다. 삼킬 때와 말할 때 물렁입천장을 올려 코인두를 막습니다. 인두신경얼기를 통해 미주신경이 지배합니다. BodyParts3D 4.0에서 가져와 정합했으며, 아틀라스 물렁입천장 표면에서 약 1.4 mm 떨어져 끝납니다.",
      "sourceSystem": "muscular",
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    {
      "name": "Tensor veli palatini.l",
      "ko": "왼쪽 입천장긴장근",
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      "description": "나비뼈의 배모양오목·나비뼈가시와 귀관 연골에서 날개갈고리까지 내려온 뒤, 힘줄이 안쪽으로 꺾여 입천장널힘줄로 퍼집니다. 물렁입천장을 팽팽하게 하고 삼킬 때 귀관을 엽니다. 아래턱신경(V3)이 안쪽날개근신경을 통해 지배하며, 인두신경얼기의 지배를 받지 않는 유일한 입천장 근육입니다. BodyParts3D 4.0에서 가져와 정합했습니다.",
      "sourceSystem": "muscular",
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      },
      "materialRoles": [
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      "geometrySource": "BodyParts3D 4.0 source mesh, registered to the atlas",
      "detailLevel": "registered source mesh",
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      "label_en": "Left tensor veli palatini",
      "description_en": "Runs from the scaphoid fossa and spine of the sphenoid and the cartilage of the auditory tube down to the pterygoid hamulus, where its tendon turns medially into the palatine aponeurosis; tenses the soft palate and opens the auditory tube in swallowing. Supplied by the mandibular nerve (V3) through the nerve to medial pterygoid, the only palatal muscle not supplied by the pharyngeal plexus. From BodyParts3D 4.0, registered to the atlas.",
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        ["Palatopharyngeus muscle.l", 0.0, 54],
        ["Sphenoid bone", 0.0, 44],
        ["Levator veli palatini.l", 0.0, 36],
        ["Retropharyngeal nodes.l", 0.1, 3],
        ["Medial pterygoid muscle.l", 0.4, 1],
        ["Superior pharyngeal constrictor.l", 0.6, 0],
        ["Uvula of palate", 1.1, 0],
        ["Palatopharyngeus muscle.r", 1.2, 0],
        ["Superior pharyngeal constrictor.r", 2.6, 0],
        ["Tensor veli palatini.r", 2.8, 0],
        ["Palatine bone.l", 2.9, 0],
        ["Levator veli palatini.r", 3.6, 0],
        ["Middle pharyngeal constrictor.l", 3.8, 0],
        ["Ascending pharyngeal artery.l", 4.1, 0]
      ]
    },
    {
      "name": "Tensor veli palatini.r",
      "ko": "오른쪽 입천장긴장근",
      "category": "muscles",
      "description": "나비뼈의 배모양오목·나비뼈가시와 귀관 연골에서 날개갈고리까지 내려온 뒤, 힘줄이 안쪽으로 꺾여 입천장널힘줄로 퍼집니다. 물렁입천장을 팽팽하게 하고 삼킬 때 귀관을 엽니다. 아래턱신경(V3)이 안쪽날개근신경을 통해 지배하며, 인두신경얼기의 지배를 받지 않는 유일한 입천장 근육입니다. BodyParts3D 4.0에서 가져와 정합했습니다.",
      "sourceSystem": "muscular",
      "bounds": {
        "min": [
          -0.01700991,
          1.53453699,
          0.0108435
        ],
        "max": [
          -0.00138193,
          1.57612782,
          0.03095171
        ],
        "center": [
          -0.00919592,
          1.5553324050000001,
          0.020897605
        ],
        "size": [
          0.01562798,
          0.041590829999999857,
          0.02010821
        ]
      },
      "vertices": 1527,
      "triangles": 3050,
      "detail": {
        "source": "BodyParts3D 4.0 (isa_BP3D_4.0_obj_99), simplified copy from the human-atlas project",
        "quality": "registered source mesh",
        "baselineVertices": null,
        "baselineTriangles": null,
        "added": "Registered: one similarity transform from BodyParts3D 4.0 fitted jointly on 9 neighbouring structures (sphenoid, maxillae, temporal bones, palatopharyngeus, superior pharyngeal constrictors) places each with a median surface distance of 0.24-0.49 mm (RMS at most 1.23 mm); closed surface; source geometry simplified by the human-atlas project (meshoptimizer, 0.2% error)"
      },
      "materialRoles": [
        "Internal rotator"
      ],
      "geometrySource": "BodyParts3D 4.0 source mesh, registered to the atlas",
      "detailLevel": "registered source mesh",
      "originalTriangles": null,
      "newTriangles": 3050,
      "label_en": "Right tensor veli palatini",
      "description_en": "Runs from the scaphoid fossa and spine of the sphenoid and the cartilage of the auditory tube down to the pterygoid hamulus, where its tendon turns medially into the palatine aponeurosis; tenses the soft palate and opens the auditory tube in swallowing. Supplied by the mandibular nerve (V3) through the nerve to medial pterygoid, the only palatal muscle not supplied by the pharyngeal plexus. From BodyParts3D 4.0, registered to the atlas.",
      "nearby": [
        ["Soft palate", 0.0, 107],
        ["Oropharynx", 0.0, 106],
        ["Palatopharyngeus muscle.r", 0.0, 53],
        ["Sphenoid bone", 0.1, 50],
        ["Levator veli palatini.r", 0.1, 37],
        ["Retropharyngeal nodes.r", 0.1, 2],
        ["Medial pterygoid muscle.r", 0.4, 0],
        ["Superior pharyngeal constrictor.r", 0.6, 0],
        ["Uvula of palate", 1.1, 0],
        ["Palatopharyngeus muscle.l", 1.3, 0],
        ["Superior pharyngeal constrictor.l", 2.6, 0],
        ["Tensor veli palatini.l", 2.8, 0],
        ["Palatine bone.r", 2.9, 0],
        ["Middle pharyngeal constrictor.r", 3.8, 0],
        ["Levator veli palatini.l", 3.9, 0],
        ["Ascending pharyngeal artery.r", 4.2, 0]
      ]
    }
  ],
  "stats": {
    "vertices": 922089,
    "triangles": 1723532,
    "meshes": 212,
    "materials": 21,
    "nodes": 271,
    "compressed": true,
    "sourceRenderUpgrades": 17,
    "highResolutionDentalUpgrades": 20,
    "tissueGeometryRefinements": 114,
    "tissueUVStructures": 118,
    "textures": 12,
    "namedNerveBranches": 14,
    "namedArteryBranches": 4,
    "addedSourceStructures": 10,
    "addedPalateMuscles": 4
  },
  "quality": {
    "source": "Original Z-Anatomy Startup.blend, Blender 3.5",
    "sourceSha256": "9f08a17ea0115fed80b2a73ecdf0a1bc2ab2f6956f37c593ce23d513ea35afcd",
    "method": "Original authored render subdivision for 17 structures and registered higher-resolution source teeth for 20 structures; remaining 197 original meshes preserved",
    "notes": "Source subdivision improves surface smoothness. Registered dental surfaces add actual source resolution. Tongue remains original 343 vertices / 682 triangles; no synthetic papillae or unsupported anatomical tissue.",
    "dentalSource": "BodyParts3D 3.0 95-percent STL, per-tooth rigid+uniform-scale registration",
    "dentalRegistrationGate": "Bidirectional sample maximum <=0.2mm, RMS<=0.1mm, bounding difference<=0.2mm",
    "dentalMirror": "Left pairs mirrored from right original source, following existing Z-Anatomy bilateral construction",
    "tissueRefinement": "80 native nerve/vessel spline surfaces resampled without changing centerlines, handles, radii, caps, branches or node transforms.20lymph-group structures interpolated from56original components with component bounds restored.4nerve roots receive shading UVs only. No new branches or hilum geometry added.",
    "tissueTextures": "UV coordinates are intended for illustrative continuous sheath, vascular wall and capsule textures, not microscopic scanned surface detail.",
    "branchSeparation": "14 named nerve branches (both sides) separated from the existing maxillary, inferior alveolar and facial nerve spline surfaces: infraorbital nerve from the first point of the maxillary nerve within 1 mm of the maxilla (approximating the inferior orbital fissure); incisive nerve as the source spline from the mental-foramen junction to the midline with its dental twigs; facial nerve temporal, zygomatic, buccal, marginal mandibular and cervical branches by the position of each source spline's free end, the trunk divided where the cervical branch leaves it. All original triangles are kept exactly once; only flat caps close the four cut points per side. The maxillary artery's unnamed alveolar splines are separated whole (no cuts) into the middle superior alveolar artery (the spline leaving the infraorbital artery in its groove, with its twigs) and the dental branches of the posterior superior alveolar artery (the spline descending over the maxillary tuberosity, with its twigs).",
    "sphenoid": "Original Z-Anatomy sphenoid bone (3,650 vertices, 7,308 triangles). The higher-resolution BodyParts3D 3.0 FMA52736 surface was registered (rigid + uniform scale) but rejected: RMS 0.73 mm, 95th percentile 1.37 mm, maximum 7.6 mm against the Z-Anatomy surface.",
    "sourceAdditions": "Frontalis, the orbital and palpebral parts of orbicularis oculi, platysma and the vagus nerve, both sides, come from the same Z-Anatomy file as the atlas. Registration gate: 8 reference structures (mandible, maxillae, zygomatic bone, buccinators, depressor anguli oris, sphenoid) coincide with the GLB within 0.006 mm after the fixed axis conversion; each new muscle is a closed surface whose share deeper than 0.5 mm inside a bone (0.1% at most) does not exceed that of existing facial muscles (up to 3.0%). Frontalis and platysma are clipped at the atlas region box and capped so the model bounds and centre do not change; the vagus nerve uses the atlas nerve construction (bevel depth × point radius, 20 radial and 18 per-segment samples), validated against the existing glossopharyngeal and hypoglossal nerves (radii within 0.4%, every source spline covered). Styloglossus and palatoglossus have no source mesh and are drawn as schematic paths; levator and tensor veli palatini were added from BodyParts3D 4.0 (see palateMuscles).",
    "dentalLowerFirstMolars": "Both lower first molars: the BodyParts3D FMA55705 surface replaces only the original outer crown and root surface (1,836 triangles), registered against that surface (rigid + uniform scale 1.0311; RMS 0.017 mm, 95th percentile 0.035 mm, sampled maximum 0.097 mm, bounding difference 0.014 mm). The original Dentine surface and inner enamel shell stay unchanged inside it. The other eight original teeth still fail the gate against BodyParts3D (incisal edges and lower canines/lateral incisors were reshaped in Z-Anatomy; maxima 0.44–0.66 mm). BodyParts3D 3.0 has no tongue or third molars; the only reachable BodyParts3D 4.0 tongue is coarser (502 triangles) and differs by RMS 2.1 mm, so the tongue is unchanged.",
    "palateMuscles": "Levator and tensor veli palatini, both sides, come from BodyParts3D 4.0 (CC BY 4.0, Database Center for Life Science), using the meshoptimizer-simplified copy published by the human-atlas project (0.2% relative error per structure). BodyParts3D 4.0 is not in the atlas coordinate frame, so one similarity transform (scale 0.9831 mm per source mm, rotation 0.34 deg from the fixed axis conversion) was fitted jointly on 9 neighbouring structures; each lands with a median surface distance of 0.24-0.49 mm (RMS 0.37-1.23 mm). The palatine bones were left out of the fit: their BodyParts3D 4.0 shapes differ (2.2 mm RMS). Checks: closed surfaces; tensor within 0.01 mm of the sphenoid and touching the soft palate; levator within 0.33 mm of the temporal bone and ending about 1.4 mm short of the soft-palate surface; 0-2.2% of each new muscle lies deeper than 0.5 mm inside bone, within the range of the existing nearby muscles (0-4.2%). Existing primitives are byte-identical."
  },
  "languages": [
    "en",
    "ko"
  ],
  "tissueAppearance": {
    "mode": "illustrative procedural PBR",
    "structures": 104,
    "measurement": false,
    "notes": "UV-following sheath grain, capsule texture and tissue color; no patient tissue scan or additional anatomical branches. Embedded PNG color, normal and roughness maps."
  },
  "compression": {
    "extension": "EXT_meshopt_compression",
    "losslessAttributes": true,
    "triangleWindingPreserved": true,
    "preprocessing": "Vertex/index reorder only; no quantization or lossy filters",
    "encoder": "meshoptimizer 1.3.0"
  },
  "nearby": {
    "method": "Area-weighted surface samples (about 8 per mm², at most 60,000 per structure); closest sampled distance; contact area is the mean over both directions of sampled area within 0.5 mm of the other surface",
    "limitMm": 8,
    "contactToleranceMm": 0.5,
    "perStructure": 16,
    "fields": [
      "name",
      "distanceMm",
      "contactMm2"
    ],
    "clinical": false
  }
}