DicomImage image = new DicomImage("your_3D_dicom_image.dcm");
DicomVolume volume = new DicomVolume(image);
                    
RenderMode3D renderMode = RenderMode3D.VR;
DicomImage3D image3D = new DicomImage3D(volume, renderMode);
                    
var normal = image3D.ScreenNormal();
                    
// Example: Adjust the view plane by rotating along the screen normal
float rotationAngle = 30.0f; // Rotate 30 degrees    
Vector3D normalVector3D = new Vector3D(normal.X, normal.Y, normal.Z); // note: normal is Vector3 (sharpDX)
Vector3D center = new Vector3D(volume.Centre.X, volume.Centre.Y, volume.Centre.Z);
image3D.RotateWorld(rotationAngle, normalVector3D, center);
            
Viewer.Images.Add(image3D);