A novel class of machine-learning-driven real-time 2D/3D tracking methods: texture model registration (TMR)

Philipp Steininger; Markus Neuner; Karl Fritscher; Felix Sedlmayer; Heinrich Deutschmann

doi:10.1117/12.878147

1 March 2011 A novel class of machine-learning-driven real-time 2D/3D tracking methods: texture model registration (TMR)

Philipp Steininger, Markus Neuner, Karl Fritscher, Felix Sedlmayer, Heinrich Deutschmann

Author Affiliations +

Proceedings Volume 7964, Medical Imaging 2011: Visualization, Image-Guided Procedures, and Modeling; 79640G (2011) https://doi.org/10.1117/12.878147
Event: SPIE Medical Imaging, 2011, Lake Buena Vista (Orlando), Florida, United States

Abstract

We present a novel view on 2D/3D image registration by introducing a generic algorithmic framework that is based on supervised machine learning (SML). First and foremost, this class of algorithms, referred to as texture model registration (TMR), aims at making 2D/3D registration applicable for time-critical image guided medical procedures. TMR methods are two-stage. In a first offline pre-computational stage, a prediction rule is derived from a pre-interventional 3D image and according geometric constraints. This is achieved by computing digitally reconstructed radiographs, pre-processing them, extracting their texture, and applying SML methods. In a second online stage, the inferred rule is used for predicting the spatial rigid transformation of unseen intrainterventional 2D images. A first simple concrete TMR implementation, referred to as TMR-PCR, is introduced. This approach involves principal component regression (PCR) and simple intermediate pre-processing steps. Using TMR-PCR, first experimental results on five clinical IGRT 3D data sets and synthetic intra-interventional images are presented. The implementation showed an average registration rate of 48 Hz over 40000 registrations, and succeeded in the majority of cases with a mean target registration error smaller than 2 mm. Finally, the potential and characteristics of the proposed methodical framework are discussed.

Citation Download Citation

Philipp Steininger, Markus Neuner, Karl Fritscher, Felix Sedlmayer, and Heinrich Deutschmann "A novel class of machine-learning-driven real-time 2D/3D tracking methods: texture model registration (TMR)", Proc. SPIE 7964, Medical Imaging 2011: Visualization, Image-Guided Procedures, and Modeling, 79640G (1 March 2011); https://doi.org/10.1117/12.878147

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