ND Presentation State What should it do? D. Sluis December 2, 2003, Open Discussion at WG11 Meeting, RSNA

D Sluis, Meeting Goals Identify functional needs for NDPS –Clinical use cases, workflow, (prioritize) –Actors and transactions: creators & users –Features to supports Consensus on scope of deliverables Explore conceptual approach

D Sluis, Some Proposed Classes of Use Specify views of “ND images” –Created by modality, user, CAD or other post-processing system Specify views on existing 2D-frame images –CT, MR, PET, NM … Specify fused presentations leveraging Supplement 73: multi-modality, atlas … “Presentation path” for usability & productivity –Unburden distracting navigation tasks

D Sluis, Review ND DICOM Status ND Presentation State motivation Overview of ND and prior discussion Functional requirements –WG12, WG17

D Sluis, D Images Have Default Display State Up Down DICOM 2D image –Is array of pixels –Has orientation –Has Photometric Interpretation Grayscale Softcopy Presentation State alters or augments image display LeftRight Pixels Photometric Interpretation

D Sluis, ND Instances Have No Display State No pixels No horz/vert, up/down, left/right No photometric interpretation Potentially multiple bit- plane types Acute need for ND Presentation State

D Sluis, ND Framework Component Array Component Dimensions Component Value Stored Values

D Sluis, Real World Domain Mapping Real World Domains Component Value Value A Value Mapping Value B Stored Values Space, time, absorbance, velocity, … Component Dimension Mapping Real World Domain-Centric; not Sample-Centric

D Sluis, Masking Spatial Masking –Cut planes, bit masks, shapes… –Unions & intersections Value Masking –Threshold window –Comparative values (aka write priority)

D Sluis, Display Window Mapping Map Real World Domains to horizontal & vertical –Orthogonal, oblique, curved Dynamic behavior –Cine –Scrolling, sweeping, M-Mode –State paths Fly-through, moving cut plane Overlapping windows 2D Annotation and mask

D Sluis, Rendering Rendering type –Tomographic –Integrals Volumetric, MIP, etc. Shading: Phong, surface … Support coarse set of models? Value rendering –Color –Multi-layer Blending (  ) Eg functional and anatomy –Layer priority …

D Sluis, Multi-Window Display Bi- and multi-plane views, MPR M-Mode Synchronized display windows (shared state)

D Sluis, Annotation and Graphics Data space –Shapes –Semantics Display space –Overlays, graphics

D Sluis, Modality and Atlas Fusion – Sup73

D Sluis,

D Sluis, DICOM Supplements WG17 WG12 Spatial Registration (73) ND Image (63) Framework for ND Presentation State US ND Presentation State Approximate Time when Official DICOM WG17&WG11 3D/4D US (43) WGnn Specialized ND Presentation State

D Sluis, Next Steps Use case and requirements consensus Tiered supplements? Work & coordination consensus

D Sluis, Ultrasound Example Space Component Value Echo Spatial Mapping Doppler Velocity Velocity Tissue Echo dBmm/s mm Stored Value Mapping