Spatial calibration of a 2D-3D ultrasound using a tracked needleReportar como inadecuado




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International Journal of Computer Assisted Radiology and Surgery

, Volume 11, Issue 6, pp 1091–1099

First Online: 08 April 2016Received: 11 February 2016Accepted: 17 March 2016

Abstract

PurposeSpatial 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.

MethodWe 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.

ResultsOur 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.

ConclusionOur 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.

Keywords3D Ultrasound Calibration Instrument Tracking  Download fulltext PDF



Autor: Francisco Vasconcelos - Donald Peebles - Sebastien Ourselin - Danail Stoyanov

Fuente: https://link.springer.com/







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