Gabriel Venne
Queen's University
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Publication
Featured researches published by Gabriel Venne.
Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine | 2013
Erin Janine Smith; Joseph A Anstey; Gabriel Venne; Randy E. Ellis
Bone models derived from patient imaging and fabricated using additive manufacturing technology have many potential uses including surgical planning, training, and research. This study evaluated the accuracy of bone surface reconstruction of two diarthrodial joints, the hip and shoulder, from computed tomography. Image segmentation of the tomographic series was used to develop a three-dimensional virtual model, which was fabricated using fused deposition modelling. Laser scanning was used to compare cadaver bones, printed models, and intermediate segmentations. The overall bone reconstruction process had a reproducibility of 0.3 ± 0.4 mm. Production of the model had an accuracy of 0.1 ± 0.1 mm, while the segmentation had an accuracy of 0.3 ± 0.4 mm, indicating that segmentation accuracy was the key factor in reconstruction. Generally, the shape of the articular surfaces was reproduced accurately, with poorer accuracy near the periphery of the articular surfaces, particularly in regions with periosteum covering and where osteophytes were apparent.
medical image computing and computer assisted intervention | 2015
Brian J. Rasquinha; Andrew W. L. Dickinson; Gabriel Venne; David R. Pichora; Randy E. Ellis
Direct surgical navigation requires registration of an intraoperative imaging modality to a tracking technology, from which a patient image registration can be found. Although electromagnetic tracking is ergonomically attractive, it is used less often than optical tracking because its lower position accuracy offsets its higher orientation accuracy.
JSES Open Access | 2018
Matt A. Daalder; Gabriel Venne; Varun Sharma; Michael J. Rainbow; Timothy Bryant; Ryan T. Bicknell
Background How trabecular bone density varies within the scapula and how this may lead to more optimal reverse shoulder arthroplasty (RSA) screw placement has not been addressed in the scientific literature. The 3 columns of trabecular bone within the scapula adjacent to the glenoid fossa, one extending through the lateral border, a second into the base of the coracoid process, and a third extending into the spine of the scapula, were hypothesized to be of relatively similar density. Methods Two-dimensional axial computed tomography (CT) images of 19 fresh frozen cadaver specimens were obtained. Digital Imaging and Communications in Medicine (DICOM; National Electrical Manufacturers Association, Rosslyn, VA, USA) image files of the CT scanned scapulae were imported into Mimics 17.0 Materialise Software (Leuven, Belgium) for segmentation and 3-dimensional digital model generation. To determine the distribution of trabecular bone density, Hounsfield unit (HU) values in the scapulae gray value files obtained from Mimics were filtered to remove any cortical bone. HU values of 650 define the corticocancellous interface in CT image data and were considered to be cortical bone. Analyses of variance with post hoc Bonferroni tests were used to determine statistical differences between the intra- and inter-regions of bone density comparisons. Results The base of the coracoid process was statistically significantly less dense than the spine and the lateral border of the scapulae examined (P < .05). Discussion/Conclusion The higher-quality bone in the spine and lateral border, compared with the coracoid regions, may provide better bone purchase for screws when fixing the glenoid baseplate in RSA.
Journal of Shoulder and Elbow Surgery | 2015
Gabriel Venne; Brian J. Rasquinha; David R. Pichora; Randy E. Ellis; Ryan T. Bicknell
computer assisted radiology and surgery | 2012
Sima Zakani; Gabriel Venne; Erin Janine Smith; Ryan T. Bicknell; Randy E. Ellis
Spine | 2017
Gabriel Venne; Brian J. Rasquinha; Manuela Kunz; Randy E. Ellis
Orthopaedic Proceedings | 2018
Gabriel Venne; M. Pickell; David R. Pichora; Ryan T. Bicknell; Randy E. Ellis
Osteoarthritis and Cartilage | 2016
Gabriel Venne; S. Ryan; John F. Rudan; Randy E. Ellis
Osteoarthritis and Cartilage | 2016
Gabriel Venne; Stephen C. Pang; Y. Tse; Randy E. Ellis
The FASEB Journal | 2015
N Al-Attar; Gabriel Venne; Ronald Easteal; M Kunz