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SEMINAR: TACTILE IMAGES: RAPID PROTOTYPING RENDERING 3-DIMENSIONAL MEDICAL IMAGING

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Today's date is Wednesday, October 28, 2020
TACTILE IMAGES: RAPID PROTOTYPING RENDERING 3-DIMENSIONAL MEDICAL IMAGING : School of Anatomy, Physiology & Human Biology Seminar Series Other events...
The Seminar: Advances in scanning geometries, detectors and computer vision are providing increasing detail in medical imaging, including dynamic 3-dimensional (3D) rendering allowing the user to view 3D structures of interest on a monitor. However, the interface between computer vision and pattern recognition by the brain has limitations. For example, when examining tactile objects rapid changes in orientation in respect to a light source provides multiple images for the visual cortex to ‘render’ for pattern recognition. The capacity to handle an object also provides tactile information. These limitations to computer vision are well known and considerable effort is being directed at developing virtual reality systems where the operator is immersed in the computer image in attempt to provide enhanced perception. These systems are cumbersome, slow and expensive. An alternative is to construct an accurate tactile model of the structures of interest. This is now possible with the development of rapid protypying systems where volumes rendered from 3D medical images can be processed into tactile models. Models are portable, can be sterilised, and mechanically altered. These attributes make them most useful as surgical aides providing detailed diagnostic anatomical information, as a means to assist with surgical navigation and trialling surgical procedures. For these reasons the Cranio-Maxillo-Facial unit at Princess Margaret Hospital obtained a rapid prototyping technology since 2002. This technology coupled with 3D surface scanners, reverse engineering software and haptic virtual clay tools provides a comprehensive surgical planning facility. This facility is now providing planning support for complex craniofacial reconstructive procedures for both paediatric and adult patients. This presentation will outline some of the in-house developments and workflows employed from diagnostic imaging, virtual surgical planning through to intra-operative navigation illustrated by case studies.

The Speaker: Mark is a graduate of the School of Anatomy and Human Biology obtaining BSc (Hons) and MSc by research. His primary research focus is bone biology with particular emphasis on craniofacial dental-skeletal dynamics. For the past decade he has been establishing computer assisted surgical planning facility in the Cranio-Maxillo-Facial and Cleft Lip &Palate Units at Princess Margaret Hospital for Children. This facility is equipped with a range of 3-dimensional scanners; laser and optical stereophotogrammetry systems; haptic devices; 3D printer and polygon editing facilities. In consultation with oral-maxillo-facial and plastic & reconstructive surgeons Mark has developed workflows utilising these technologies to provide a comprehensive surgical planning facility that can render and fuse 3D medical images of different modalities to reverse engineer a 3D virtual patient, produce anatomical models, plan surgeries, design and manufacture patient specific surgical navigational aids. Most recently this facility has been developing spatially dense geometric morphometric synthesis of 3D faces that now can provide a statistical 3D rendering of normalisation of patient faces to be incorporated into the virtual patient environment to assist surgical planning.
Speaker(s) Mark Walters, Cranio-Maxillo-Facial Unit, Princess Margaret Hospital for Children, Western Australia
Location Room 1.81, Anatomy, Physiology & Human Biology Building North
Contact Debbie Hull <[email protected]> : 6488 3313
Start Thu, 09 May 2013 13:00
End Thu, 09 May 2013 14:00
Submitted by Debbie Hull <[email protected]>
Last Updated Tue, 30 Apr 2013 15:46
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