During the intraoperative-ultrasound-guided intervention, ultrasound (US) is often registered with other highquality preoperative images like computed tomography (CT) or magnetic resonance (MR) to improve the navigation accuracy. However, real-time registration is difficult to achieve due to the difference of image modality and dimensionality. To solve this problem, we apply preoperative 3D US image collected with a 3D calibrated probe to simplify 2D US and 3D MR image registration into two easy-achieved steps: 2D-3D US intra-modal registration and 3D US 3D MR pre-operative registration. To achieve fast intraoperative 2D US and preoperative 3D US registration, we take advantage of effective 2D and 3D US probes’ calibration results and get a near optimal registration transform. Then intraoperatively we just need to do an automatic local adjustment, which will make real-time registration become possible. To achieve effective calibrations, we design an improved calibration phantom and propose a warm-start iterative closest points (ICP) method.
CITATION STYLE
Chen, F., Liao, R., & Liao, H. (2015). Fast registration of intraoperative ultrasound and preoperative mr images based on calibrations of 2D and 3D ultrasound probes. In IFMBE Proceedings (Vol. 51, pp. 220–223). Springer Verlag. https://doi.org/10.1007/978-3-319-19387-8_53
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