Dicom Annotations:
Layers
LDicomDS::GetLayerElementByIndex
LDicomDS::GetLayerElementByName
LDicomDS::GetLayerGraphicObjectCount
LDicomDS::GetLayerTextObjectCount
LDicomDS::RemoveLayerGraphicObjects
LDicomDS::RemoveLayerTextObjects
LDicomDS::GetLayerImageRefCount
LDicomDS::GetLayerImageRefElement
LDicomDS::RemoveAllImageRefFromAllLayers