title: [PET and CT cross-modality medical image fusion based on out-location frame].
abstract: OBJECTIVE
  To develop a new method of PET and CT cross-modality medical image fusion based on out-location frame.
  
  
  METHODS
  PET/CT cross-modality medical images were obtained based on the out-location frame and the external fiducial marker on the frame was used for rigid medical image registration. A variation model based on the wavelet transform was used for image fusion.
  
  
  RESULTS
  The CT images were displayed by grey scale and overlaid with the PET images displayed by chromatic scale to obtain the image after registration and fusion.
  
  
  CONCLUSIONS
  The method of external markers registration can be effective and accurate in achieving PET and CT image fusion.
authors.affiliation: Radiotherapy Center of PLA 303 Hospital, Nanning 530021, China.
authors.forename: Zi-hai
authors.initials: ZH
authors.lastname: Xu
authors.forename: Fu-xi
authors.initials: FX
authors.lastname: Liao
authors.forename: Zhi-qiang
authors.initials: ZQ
authors.lastname: He
authors.forename: Qian
authors.initials: Q
authors.lastname: Ni
mesh_terms: D006801:Humans; D007089:Image Enhancement / Q000295:instrumentation / Q000379:methods; D007090:Image Interpretation, Computer-Assisted / Q000295:instrumentation / Q000379:methods*; D049268:Positron-Emission Tomography / Q000295:instrumentation / Q000379:methods*; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted / Q000295:instrumentation / Q000379:methods*; D011881:Radiotherapy, Computer-Assisted / Q000295:instrumentation / Q000379:methods*; D020266:Radiotherapy, Conformal / Q000379:methods; D014057:Tomography, X-Ray Computed / Q000379:methods*