Resulting from a collaboration between Fraunhofer IGD and Vicomtech in Spain, X3DOM now also provides basic support for the new X3D VolumeRendering component, that originally was developed by the Web3D medical working group and will be part of the upcoming X3D V3.3 specification. Here and here you find some first tests. However, please note that this component is not part of the X3DOM HTML profile, but generally follows the extension mechanism.