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DICOM and CT/PET Fusion

DICOM and CT/PET Fusion. CT and PET slices stored as separate original image files one slice per file (old objects) or multiple slices per file (new enhanced objects) Fused images are NOT stored in special form Blending presentation state specifies what and how to fuse

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DICOM and CT/PET Fusion

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  1. DICOM and CT/PET Fusion • CT and PET slices stored as separate original image files • one slice per file (old objects) or multiple slices per file (new enhanced objects) • Fused images are NOT stored in special form • Blending presentation state specifies what and how to fuse • selection of underlying (CT) and superimposed (PET) sets of images • windowing, relative opacity and pseudo-color palette • may include reference to rigid or non-rigid registration spatial transform • Why ? • allows receiving application user to adjust/correct re-sampling, registration, windowing, relative opacity, perform MPR & 3D • allows for computation of quantitative values from originals • avoids storage of duplicate of entire data set (in original and fused forms) • Can store fused result as “secondary capture image” • for display only (referring physician); can’t be adjusted & useless for quantitation

  2. DICOM Blending Pipeline

  3. Blending for CT-PET selectunderlying selectsuperimposed

  4. Blending for CT-PET selectunderlying [register] selectsuperimposed

  5. Blending for CT-PET selectunderlying [register] selectsuperimposed resample

  6. Blending for CT-PET selectunderlying [register] within slices selectsuperimposed resample

  7. Blending for CT-PET selectunderlying [register] within slices selectsuperimposed resample [between slices]

  8. Blending for CT-PET selectunderlying rescale andwindow [register] within slices selectsuperimposed resample [between slices]

  9. Blending for CT-PET selectunderlying rescale andwindow [register] within slices selectsuperimposed pseudo-color resample [between slices]

  10. Blending for CT-PET selectunderlying rescale andwindow blend [register] within slices selectsuperimposed pseudo-color resample [between slices]

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