Qt Quick3D custom geometry from 3D array

[Uro1012]

Hello there,
I have some segmented medical image in DICOM format that I would like to display with Quick3D. I read those images with ITK and there is a image to mesh filter which I should be able to use. My question is how do I create a 3D object from this mesh? I found the custom geometry example, but don't really understand it as I have a limited knowledge about 3D graphics. Any help would be very welcome.

I already have a QML file that can display a 3D image from a mesh file.

import QtQuick 2.0
import QtQuick.Controls 2.12
import QtQuick.Layouts 1.2
import QtQuick3D 1.15
import QtQuick3D.Helpers 1.0

Item {
    id: displayImage
    width: 1200
    height: 800

    Rectangle {
        width: parent.width
        height: parent.height

        Rectangle {
            height: parent.height-60
            width: parent.width
            anchors.top: parent.top

            // content
            View3D {
                id: view
                anchors.fill: parent

                PerspectiveCamera {
                    id: camera
                    position: Qt.vector3d(0, 0, 0)
                    pivot: Qt.vector3d(0, 0, -300)
                }

                DirectionalLight {
                    id: light
                    eulerRotation.x: camera.eulerRotation.x
                    eulerRotation.y: camera.eulerRotation.y
                    eulerRotation.z: camera.eulerRotation.z
                }

                Model {
                    id: bone
                    position: Qt.vector3d(-512/2*0.57, -512/2*0.57, -129/2*1.6) // center of image
                    source: "file:///C:/.../bone.mesh"

                    materials:
                        DefaultMaterial {
                        diffuseColor: "grey"
                    }
                }

            WasdController {
                controlledObject: camera
            }
        }

        Footer {
            anchors.bottom: parent.bottom

            previous: loadImg
        }
    }
}