00:00

Development of Biplanar Fluoroscopic System for Foot and Ankle Motion Analysis

The RERC Annual Meeting program aims to develop a biplanar fluoroscopic system for analyzing foot and ankle motion in adults. The project involves phantom studies, system construction, software development, and validation trials. Challenges such as manual feature extraction are being addressed with improved software solutions. The team's progress includes completing static phantom studies, constructing the system, and developing calibration devices and software. Future plans involve IRB approval for trials and further motion analysis studies.

dutescu
Download Presentation

Development of Biplanar Fluoroscopic System for Foot and Ankle Motion Analysis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ANNUAL MEETING RERC on Technologies for Children with Orthopedic Disabilities NIDRR H133E100007 Program Director: Gerald F. Harris, Ph.D., P.E. Program Co-Director: Li-Qun Zhang, Ph.D.

  2. D3: Biplanar Fluoroscopic System for Dynamic, in vivo Foot and Ankle Motion Analysis Taly Gilat-Schmidt, Ph.D. and Janelle Cross, M.S.

  3. D3: Biplanar Fluoroscopic System for Dynamic, in vivo Foot and Ankle Motion Analysis • Subject population – normal adults: 5 • Project goal – Develop a biplane x-ray fluoroscopy system for analyzing in vivo motion of the bare or shod foot

  4. D3 Specific Aims • To develop a prototype biplane fluoroscopy system and manual feature extraction method for in vivo studies of subtalar hindfoot kinematics

  5. D3 Conceptual Model Walkway with force plate Bi-plane x-ray images 3D MRI images 3D Localization X-ray sources Image Intensifiers q q Milwaukee Foot Model

  6. D3 Tasks • Perform phantom study to guide design of fluoroscopy system • Construct biplane fluoroscopy system • Develop geometry calibration devices and software • Implement image processing software to localize anatomy in 3D from the biplane x-ray images

  7. D3 Tasks • Validate localization accuracy with dynamic phantom study • Obtain IRB approval for normal subject trial • Normal subject trial to demonstrate feasibility of kinematic and kinetic analysis in bare and shod foot

  8. D3 Time Line Activity: Year 1 Year 2 Year 3 Year 4 Year 5 Phase 1: Phantom studies with 2D fluoroscopy system Phase 2: Construct biplane fluoroscopy system Phase 3: Develop feature extraction software Phase 3: Dynamic phantom study Phase 3: Pilot subject studies

  9. D3 Progress • Completed: Performed static phantom study - investigated fluoroscopy geometry - quantified gantry cross- contamination effects • Completed: Constructed biplane fluoroscopy system • Completed: Developed geometry calibration devices and software

  10. D3 Progress • In progress: Implementing image processing software to localize anatomy in 3D from the biplane x-ray images • In progress: IRB protocol submitted and undergoing review

  11. D3 Accomplishments Abstract accepted for 2013 SPIE Medical Imaging Conference: J. A. Cross, B. McHenry, T.G. Schmidt, “Quantifying cross scatter in biplane fluoroscopy motion analysis systems.”

  12. D3 Challenges & Solutions Challenges/Solutions Challenge: Manual feature extraction for 3D localization was too time intensive and error prone to be practical. Solution: We evaluated and are implementing public domain software for localization through model- based tracking. Our attempt at using JointTrack was unsuccessful. We are now using Autoscoper from Brown University

  13. D3 Opportunities • The image processing software we are using for localization is a conglomeration of several available software packages. A potential opportunity is to integrate these software algorithms into one package which could be disseminated • Follow-up motion analysis study for different shoe wear conditions using developed system

  14. Year 3 Plans • Complete IRB approval process for normal subject trial • Normal subject trial to demonstrate feasibility of kinematic and kinetic analysis in bare and shod foot

More Related