Approximated Volumetric Reconstruction from Projected Images

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Presentation transcript:

Approximated Volumetric Reconstruction from Projected Images Final Presentation Sheng Xu Computer Integrated Surgery II May 10th, 2001 Wednesday, June 26, 2019Wednesday, June 26, 2019

Outline Project Description Demo Evaluation Wednesday, June 26, 2019Wednesday, June 26, 2019

Goal: The treatment of AVM Arteriovenous Malformations vascular disease Needle Tip Wednesday, June 26, 2019Wednesday, June 26, 2019

Algorithm: Intersection X-ray Source object image Wednesday, June 26, 2019Wednesday, June 26, 2019

Program Demo Wednesday, June 26, 2019Wednesday, June 26, 2019

Evaluation Reconstruction Error Algorithm speed Memory requirement Wednesday, June 26, 2019Wednesday, June 26, 2019

Reconstruction Error This algorithm always over estimates volume. The error depends on the following factors: The number of projections The angle between projections The shape of the object Wednesday, June 26, 2019Wednesday, June 26, 2019

Error : the Number of Projections Wednesday, June 26, 2019Wednesday, June 26, 2019

Error: the Angle between Projections Wednesday, June 26, 2019Wednesday, June 26, 2019

Error : the Shape of Object Wednesday, June 26, 2019Wednesday, June 26, 2019

Performance: Speed & Memory The algorithm’s running time depends on the resolution, the number of projectins and object’s size For a 15mm x 15mm x 15mm object, 0.5mm x 0.5mm x 0.5mm resolution, it can be done in less than 2 seconds on a Pentium II 233. The algorithm doesn’t need much temporary memory to do the calculation. Wednesday, June 26, 2019Wednesday, June 26, 2019

What have I learned Presentation PowerPoint Wednesday, June 26, 2019Wednesday, June 26, 2019

Deliverables 1. Help Gabor with MICCAI paper 2. A new algorithm 3. A CAS Application for the treatment of AVM 4. Test results of phantom data and patient image data 5. Documentation of algorithm and codes. Wednesday, June 26, 2019Wednesday, June 26, 2019