Prior-aided volume of interest CBCT image reconstruction for clinical interventional data

Daniel Punzet; Robert Frysch; Daniel Behme; Tim Pfeiffer; Oliver Speck; Georg Rose

doi:10.1117/12.2610748

4 April 2022 Prior-aided volume of interest CBCT image reconstruction for clinical interventional data

Daniel Punzet, Robert Frysch, Daniel Behme, Tim Pfeiffer, Oliver Speck, Georg Rose

Proceedings Volume 12031, Medical Imaging 2022: Physics of Medical Imaging; 1203127 (2022) https://doi.org/10.1117/12.2610748
Event: SPIE Medical Imaging, 2022, San Diego, California, United States

Conference Poster

Abstract

In many interventional settings it would be beneficial to perform a final CBCT acquisition for outcome control after the intervention is done. However, due to high patient dose this is often omitted. Volume-of-interest acquisitions offer considerable dose reduction, but image reconstruction typically suffers from cupping artifacts and offsets in radiodensity due to the truncated projection data. In a previous work we presented a method which allows to incorporate available prior volume data into the reconstruction of volume-of-interest acquisitions in CBCT. The method works by making use of the fluoroscopic positioning images typically acquired before CBCT acquisitions in a 3D Radon space-based registration method registering the prior volume to the volumeof-interest scenario. Here, we demonstrate the application of this method on real clinical data or the first time.

Citation Download Citation

Daniel Punzet, Robert Frysch, Daniel Behme, Tim Pfeiffer, Oliver Speck, and Georg Rose "Prior-aided volume of interest CBCT image reconstruction for clinical interventional data", Proc. SPIE 12031, Medical Imaging 2022: Physics of Medical Imaging, 1203127 (4 April 2022); https://doi.org/10.1117/12.2610748

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