Using 3D Visualisation in the Repair of Intra-articular Fractures
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Using 3D Visualisation in the Repair of Intra-articular Fractures
Arline. F. WilsonDr. Peter. B. Musgrove
Dr. Gillian PearceDr. Kevan A. Buckley
Dr. John M. Geoghegan
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Theory and Practice of Computer Graphics 2007
Derbyshire Royal Infirmary
Oswestry Orthopaedic Hospital
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Theory and Practice of Computer Graphics 2007
Research Problem
• Repair an intra-articular fracture with the smoothest articulating surfaces possible
• An intra-articular fracture is a break in the articulating surfaces of a joint
• Use 3D visualisation as a tool in providing pre-operative planning for surgery
• Data visualisation from CT scans are a non-invasive way of providing information
• Initial work is in 2D
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Theory and Practice of Computer Graphics 2007
2D Visualisation
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Theory and Practice of Computer Graphics 2007
http://www.tfl.gov.uk/assets/images/general/mapt-tube-standard-colourmap.gif
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Theory and Practice of Computer Graphics 2007
3D Visualisation
Knee Joint
(image created using AMIRA software)
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Theory and Practice of Computer Graphics 2007
Expected face afterCurrent face before
Medical Visualisation
(Images from The Times newspaper, November 2005)
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Theory and Practice of Computer Graphics 2007
Pre-operative planning
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Theory and Practice of Computer Graphics 2007
One year after
Surgery
http://www.breitbart.com/article.php?id=D8LM81E00&show_article=1
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Theory and Practice of Computer Graphics 2007
Three-dimensional solid from CT “slices”
Series of many two-dimensional images
combine in sequence to create a
three-dimensional solid
Object appears in each two-dimensional “slice”
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Theory and Practice of Computer Graphics 2007
Series of 2D images
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Theory and Practice of Computer Graphics 2007
Visualisation of CT data
View of bones
obscured by soft tissue
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Theory and Practice of Computer Graphics 2007
Image of fracture with no soft tissue visible
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Theory and Practice of Computer Graphics 2007
Edge Detection
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Theory and Practice of Computer Graphics 2007
Jigsaw Puzzle Matching
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Theory and Practice of Computer Graphics 2007
Rotate Blue Fragment
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Theory and Practice of Computer Graphics 2007
Do they match?
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Theory and Practice of Computer Graphics 2007
Exact Match
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Theory and Practice of Computer Graphics 2007
Automatically manipulate fragment to show match
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Theory and Practice of Computer Graphics 2007
Partial Match
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Theory and Practice of Computer Graphics 2007
Show where it
does not fit
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Theory and Practice of Computer Graphics 2007
No Match
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Theory and Practice of Computer Graphics 2007
Partial Match
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Theory and Practice of Computer Graphics 2007
Overlap/collision
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Theory and Practice of Computer Graphics 2007
Poor Match
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Theory and Practice of Computer Graphics 2007
Exact Match
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Theory and Practice of Computer Graphics 2007
Progress so far
• 3D visualisation of CT data– Amira– AVS/Express
• Some edge detection and collision detection work– Vb.Net
• 2D shape manipulation and matching– Java
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Theory and Practice of Computer Graphics 2007
Further Work
• Apply manipulation to 3D images– User interface views?– Manipulation control?
• Edge detection• Collision detection• Automatic segmentation• Can swelling and/or bleeding affect
the images?
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Theory and Practice of Computer Graphics 2007
Thank You.
Questions?
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Theory and Practice of Computer Graphics 2007
Partial Match
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Theory and Practice of Computer Graphics 2007
Partial Match
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Theory and Practice of Computer Graphics 2007
Poor Match
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Theory and Practice of Computer Graphics 2007
Partial Match
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Theory and Practice of Computer Graphics 2007
Partial Match
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Theory and Practice of Computer Graphics 2007
Acknowledgements
• Underground geographical maphttp://pauldwaite.co.uk/londonTubeMap/geoff-files/sillymaps/geographical_map.jpg
• More common maphttp://www.tfl.gov.uk/assets/images/general/mapt-tube-standard-colourmap.gif
• Face transplant images• The Times newspaper, November 2005• http://www.breitbart.com/article.php?id=D8LM81E00&show_article=1
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Theory and Practice of Computer Graphics 2007
Matrix Multiplication
• Angle of rotation is • Convert to radians = * / 180
1 0 0 cos() sin() 0 0 1 0 -sin() cos() 0 -x -y 0 0 0 1