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Published in:
2013 | OriginalPaper | Chapter
Three-Modality Registration for Guidance of Minimally Invasive Cardiac Interventions
Authors : R. James Housden, Mandeep Basra, YingLiang Ma, Andrew P. King, Roland Bullens, Nick Child, Jaswinder Gill, C. Aldo Rinaldi, Victoria Parish, Kawal S. Rhode
Published in: Functional Imaging and Modeling of the Heart
Publisher: Springer Berlin Heidelberg
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Image guidance of minimally invasive cardiac interventions can be augmented by registering together different imaging modalities. In this paper, we propose a method to combine three modalities: X-ray fluoroscopy, trans-esophageal ultrasound and pre-procedure MRI or CT. The registration of the pre-procedure image involves a potentially unreliable manual initialisation of its position in an X-ray projection view. The method therefore includes an automatic correction using the esophagus location as an additional constraint. We test the method in a phantom experiment and find that initialising the pre-procedure image with up to 9mm offset from its correct position results in a 92% registration success rate. The esophagus constraint improves the capture range in the out-of-plane direction, which simplifies the manual initialisation.