Reducing radiation dose in orthopaedic trauma surgery using Depth Camera Augmented Fluoroscopy (DeCAF)
department or school: Applied Science, Faculty of
department or school: Mechanical Engineering, Department of
data provider: DSpace
degree campus: UBCV
creator: Ranjbaran, Parinaz
issued: 2024-07-24T07:00:00Z
issued: 2024
related degree: Master of Applied Science - MASc
degree grantor: University of British Columbia
description: In orthopaedic trauma surgery, using the C-arm fluoroscope to identify the relative position of surgical tools and anatomical structures adds to surgical time and exposes the patient and surgical team to radiation. We hypothesize that overlaying the most recently acquired fluoroscopic image on a video stream showing surgical tool positions could significantly decrease radiation and potentially improve workflow efficiency. Our Depth Camera Augmented Fluoroscopy (DeCAF) system uses a 3D depth camera affixed to the image intensifier tube to create an augmented reality view that overlays a recently acquired X-ray image onto a live video feed to allow the surgeon to more intuitively understand the relationship between the patient’s surface anatomy, surgical tools in the operating field, and interior anatomical structures. To evaluate the potential value of DeCAF, we simulated proximal tibia fixation using 40 Synbone models embedded in a foam model representing surrounding soft tissues. Two surgeons inserted three screws under the tibial plateau in each model, in half of the cases using the conventional fluoroscopic method, and in the other half using the DeCAF system with no imaging taken after the initial shot, except to confirm final placement. We measured the number of X-rays taken in the conventional procedure, the time required for each step, and the depth of the exit points of the screws. The DeCAF overlay error (distance between corresponding points on the X-ray and video images) averaged 1.3±0.2mm within ±50 mm of the calibration plane. The average number of X-ray shots using the conventional method by each surgeon were 39.2 and 21.5. Overall, screws inserted with DeCAF tended to exit ~2mm deeper than with the conventional method but were generally still within or close to the normally targeted depth zone. The overlay error is consistent with accuracies reported in related studies (Navab 2010, Habert 2015) and is likely acceptable for clinical applications. Despi…
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/88700
note: REDUCING RADIATION DOSE IN ORTHOPAEDIC TRAUMA SURGERY USING DEPTH CAMERA AUGMENTED FLUOROSCOPY (DECAF) by Parinaz Ranjbaran B.Sc., Sharif University of Technology, 2020 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF APPLIED SCIENCE in THE FACULTY OF GRADUATE AND POSTDOCTORAL STUDIES (Mechanical Engineering) THE UNIVERSITY OF BRITISH COLUMBIA (Vancouver) July 2024 © Parinaz Ranjbaran 2024 ii The following individuals certify that they have read, and recommend to the Faculty of Graduate and Postdoctoral Studies for acceptance, the thesis entitled: ______________________________________________________________________________ submitted by in partial fulfilment of the requirements for the degree of in Examining Committee: Supervisor Co-supervisor Supervisory Committee Member Supervisory Committee Member Reducing radiation dose in orthopaedic trauma surgery using Depth Camera AugmentedFluoroscopy (DeCAF)Parinaz RanjbaranMaster of Applied ScienceMechanical EngineeringAntony Hodgson, Professor, Mechanical Engineering, UBCPierre Guy, Professor, Orthopaedics, UBCIlker Hacihaliloglu, Assistant Professor, Radiology, UBCThomas Oxland, Professor, Mechanical Engineering, UBCiii Abstract In orthopaedic trauma surgery, using the C-arm fluoroscope to identify the relative position of surgical tools and anatomical structures adds to surgical time and exposes the patient and surgical team to radiation. We hypothesize that overlaying the most recently acquired fluoroscopic image on a video stream showing surgical tool positions could significantly decrease radiation and potentially improve workflow efficiency. Our Depth Camera Augmented Fluoroscopy (DeCAF) system uses a 3D depth camera affixed to the image intensifier tube to create an augmented reality view that overlays a recently acquired X-ray image onto a live video feed to allow the surgeon to more intuitively understand the relationship between the patient’s surface anatomy, surgical to…
has type: Thesis/Dissertation
date issued: 2024-11
is shown at: 10.14288/1.0444819
language: eng
degree discipline: Mechanical Engineering
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
contributor: Hodgson, Antony J.
contributor: Guy, Pierre
type: Text
identifier URI: http://hdl.handle.net/2429/88700