Last updated: May 8, 2018

Our project is to track the osteotom tool that is used in Periacetabular Osteotomy (PAO) Surgery using RGBD and X-ray data. The osteotom tool is rigidly fixed on the bone fragment which is going to be cut and reoriented in the PAO surgery. By tracking the tool, the surgeon should be able to have a better knowledge of the position and orientation of the bone fragment which is mostly inside human body. With the help of our project, the surgeon is expected to be able to make the alignment more accurately, thus achieving a better clinical outcome of this surgery.

• Students: Wenhao Gu and Billy Carrington
• Mentors: Mathias Unberath, Robert Grupp, Prof. Armand, Porf. John Tis, Sing Chun Lee, and Javad Fotouhi

* Background:

• Periacetabular Osteotomy (PAO) is for patients suffering from developmental dysplasia of the hip (DDH)
• Caused by reduced coverage of the femoral head
• PAO surgery improves poor femoral coverage by reorienting the acetabulum and stabilizing the hip joint
• However surgery is challenging due to reasons such as complex anatomy and slim margins of error.
• Previous works have been done to help pre-operatively with surgeries like this.

* Specific Aims:

• Track the osteotom tool with respect to the pelvis in PAO using RGBD and X-ray images

* Significance:

• Reduce Radiation to the patient
• Speeds up surgery intra-operatively

• Minimum: (4/6)
  1. Working segmentation (e.g. background subtraction)
  2. pose estimation (ICP)
  3. visualization

• Expected: (4/20)
  1. improved segmentation
  2. better pose estimation (globally optimal ICP)
  3. visualize the cut plane

• Maximum: (5/4)
  1. Start collect data base upon the prototype
  2. start investigating the planning approach

1. Access to previous code (2D/3D registration, etc.)
   • Complete
2. Access to Intel RealSense SDK
   • Complete
3. Access to PCL (Point Cloud Library)
   • Complete
4. Access to RGBD camera
   • Complete
5. Access to the C-arm x-ray
   • Incomplete (alternative get Mentors to do it for us)
6. Access to the CAD model and the True model
   • In progress (making one ourselves)

1. Milestone name: Become familiar with pre-existing works on the topic:
   • Planned Date: February 26th
   • Expected Date: February 26th
   • Status: complete
2. Milestone name: Complete Minimum deliverable/ start expected/deliverables
   • Planned Date: March 11th
   • Expected Date: March 29th
   • Status: complete
3. Milestone name: Expand upon our previous segmentation and pose estimation methods
   • Planned Date: April 16th
   • Expected Date:April 20th
   • Status: in progress
4. Milestone name: Complete expected deliverables/start maximum deliverables
   • Planned Date: April 16th
   • Expected Date:April 20th
   • Status: in progress

• Project Plan
  • Project plan presentation
  • Project plan proposal
• Project Background Reading
  • PaperSummary_Wenhao.pdf
  • Paper_Wenhao.pdf
  • PaperPresentation_Wenhao.pdf
  • PaperPresentation_Billy.pdf
  • Background_Presentation_Billy
• Project Checkpoint
  • Project checkpoint presentation
  • Project checkpoint presentation
• Project Final Presentation
  • Final Poster
• Project Final Report
  • Final Report
• Final Project Teaser
  • Final Project Teaser

* here list references and reading material

1. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5683202/
2. https://hal.inria.fr/inria-00545478/document
3. Murphy, R. J., Armiger, R. S., Lepistö, J., & Armand, M. (2016). Clinical evaluation of a biomechanical guidance system for periacetabular osteotomy. Journal of orthopaedic surgery and research, 11(1), 36.
4. Murphy, R. J., Armiger, R. S., Lepistö, J., Mears, S. C., Taylor, R. H., & Armand, M. (2015). Development of a biomechanical guidance system for periacetabular osteotomy. International journal of computer assisted radiology and surgery, 10(4), 497-508.
5. Murphy, R. J., Otake, Y., Lepistö, J., & Armand, M. (2013). COMPUTER-ASSISTED X-RAY IMAGE-BASED NAVIGATION OF PERIACETABULAR OSTEOTOMY WITH FIDUCIAL BASED 3D ACETABULAR FRAGMENT TRACKING. Bone Joint J, 95(SUPP 28), 84-84.
6. Otake, Y., Armand, M., Armiger, R. S., Kutzer, M. D., Basafa, E., Kazanzides, P., & Taylor, R. H. (2012). Intraoperative Image-based Multiview 2D/3D Registration for Image-Guided Orthopaedic Surgery: Incorporation of Fiducial-Based C-Arm Tracking and GPU-Acceleration. IEEE Transactions on Medical Imaging, 31(4), 948–962.
7. Fotouhi, J, et al. “Pose-aware C-arm for automatic re-initialization of interventional 2D/3D image registration.” International Journal of Computer Assisted Radiology & Surgery 12.7(2017):1221-1230.

Here give list of other project files (e.g., source code) associated with the project. If these are online give a link to an appropriate external repository or to uploaded media files under this name space.2018-11