title: Image Fusion.
mesh_terms: D006801:Humans; D007089:Image Enhancement / Q000379:methods; D064847:Multimodal Imaging / Q000379:methods*; D049268:Positron-Emission Tomography / Q000379:methods*; D061766:Proton Therapy / Q000379:methods*; D061089:Radiotherapy, Image-Guided / Q000379:methods*; D013382:Subtraction Technique; D014057:Tomography, X-Ray Computed / Q000379:methods*