Spatial calibration of a 2D/3D ultrasound using a tracked needle

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© 2016, The Author(s). Purpose: Spatial calibration between a 2D/3D ultrasound and a pose tracking system requires a complex and time-consuming procedure. Simplifying this procedure without compromising the calibration accuracy is still a challenging problem. Method: We propose a new calibration method for both 2D and 3D ultrasound probes that involves scanning an arbitrary region of a tracked needle in different poses. This approach is easier to perform than most alternative methods that require a precise alignment between US scans and a calibration phantom. Results: Our calibration method provides an average accuracy of 2.49 mm for a 2D US probe with 107 mm scanning depth, and an average accuracy of 2.39 mm for a 3D US with 107 mm scanning depth. Conclusion: Our method proposes a unified calibration framework for 2D and 3D probes using the same phantom object, work-flow, and algorithm. Our method significantly improves the accuracy of needle-based methods for 2D US probes as well as extends its use for 3D US probes.




Vasconcelos, F., Peebles, D., Ourselin, S., & Stoyanov, D. (2016). Spatial calibration of a 2D/3D ultrasound using a tracked needle. International Journal of Computer Assisted Radiology and Surgery, 11(6), 1091–1099.

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