{ "$schema":                                  "https://json-schema.org/draft/2020-12/schema",
  "$id":                                      "https://schemas.mpai.community/OSD/V1.5/data/BasicUltrasoundSceneGeometry.json",
  "title":                                    "Basic 3D Model Scene Geometry V1.5", 
  "type":                                     "object", 
  "additionalProperties":                     false, 
  "required":                                 [ "Header", "BasicUltrasoundSceneGeometryID", "BasicUltrasoundSceneGeometrySpaceTime", 
                                                "UltrasoundObjectCount", "UltrasoundObjects" ], 
  "properties":                               {

    "Header":                                 { "type": "string", "pattern": "^OSD-B3G-V[0-9]{1,2}[.][0-9]{1,2}$" },
    "MInstanceID":                            { "type": "string" },
    "BasicUltrasoundSceneGeometryID":         { "type": "string" },
    "BasicUltrasoundSceneGeometrySpaceTime":  { "$ref": "https://schemas.mpai.community/OSD/V1.5/data/SpaceTime.json" },

    "UltrasoundObjectCount":                  { "type": "integer", "minimum": 0 },
    "UltrasoundObjects":                      { "type": "array", "minItems": 0, "items": { "type": "object", "additionalProperties": false,
                                                "required": [ "UltrasoundObjectSpaceTime", "UltrasoundObjectQualifier" ], "properties": {
      "UltrasoundObjectSpaceTime":            { "$ref": "https://schemas.mpai.community/OSD/V1.5/data/SpaceTime.json" },
      "UltrasoundObjectQualifier":            { "$ref": "https://schemas.mpai.community/TFA/V1.5/data/UltrasoundQualifier.json" } } } },

    "DataEMData":                             { "$ref": "https://schemas.mpai.community/PTF/V1.0/data/DataExchangeMetadata.json" },
    "DescrMetadata":                          { "type": "string", "maxLength": 2048 } } }