Viewing essentials

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Viewing essentials
James Miller, Ph.D.. James Ross, M.Sc., Xi
Wang, Ph.D., Steve Pieper, Ph.D., Wendy
Plesniak, Ph.D.
GE Research Isomics Surgical Planning
Laboratory, Brigham and Womens Hospital
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Requisites, expectations and adaptations

• Clinicians and researchers need and expect
  imaging platforms to provide stock capabilities
• Window/level
• Pan/zoom
• Annotation
• Probe
• Measurement
• Oblique reformat
• Volume rendering
• Lightbox
• How do we adapt these concepts to a Slicer
  experience?

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Lightbox
http//www.brighamandwomens.org/excellence/neurosc
ience.aspx
?
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Standard lightbox viewing
http//www.brighamandwomens.org/excellence/neurosc
ience.aspx
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with overlays
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with annotations
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with fiducials
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with multiple reformations
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with an editor
X
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Oblique reformat

• Anatomy is rarely predominantly aligned axially,
  sagitally, or coronally
• Oblique reformation allows image display planes
  to be aligned to an anatomys principal axes

Axial
Oblique
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Standard oblique reformat
CTRL-Right Button to manipulate reformation
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with lightbox
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Comparing series and studies

• Longitudinal analysis
• Cross-sectional analysis

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Standard comparison of studies
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with overlays
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with annotations
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with fiducials
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after registration
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with lightbox
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with oblique reformation
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Applications

• Atlas construction
• Manual delineation
• Quality control
• Cross-sectional comparison of atlas subjects
  before and after aligning to common coordinate
  frame
• Cross-sectional comparison of atlas subjects to
  constructed atlas
• Atlas application
• Comparison of atlas to new subject
• Cross-sectional comparison of new subjects
  aligned with atlas
• Longitudinal analysis
• Response to therapy

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Image viewing is still predominantly 2D

• Native format of acquisition
• Precision dimensional measurements
• Multiplanar reformat (axial, sagittal, coronal)
  provides a natural (perhaps comfortable)
  navigation paradigm
• Lightbox provides a mechanism to display 3D
  relationships
• Oblique reformats provide a mechanism to mitigate
  3D effects (improve accuracy of dimensional
  measurements)
• Longitudinal and cross-sectional comparisons
  build on the same framework of linked controls
  and coordinate frames
• Slicer3 allows all these capabilities to be
  layered due incorporation of coordinate frames at
  a fundamental level of the viewing pipeline