Design of a clinical free-hand 3D ultrasound system

Jonathan C. Carr; Jan L. Stallkamp; Michelle M. Fynes; Andrew H. Gee; Richard W. Prager; Graham M. Treece; Chris Overton; Laurence Berman

doi:10.1117/12.382234

12 April 2000 Design of a clinical free-hand 3D ultrasound system

Jonathan C. Carr, Jan L. Stallkamp, Michelle M. Fynes, Andrew H. Gee, Richard W. Prager, Graham M. Treece, Chris Overton, Laurence Berman

Author Affiliations +

Proceedings Volume 3982, Medical Imaging 2000: Ultrasonic Imaging and Signal Processing; (2000) https://doi.org/10.1117/12.382234
Event: Medical Imaging 2000, 2000, San Diego, CA, United States

Abstract

The user interface is critical to the clinical acceptance of free-hand 3D ultrasound imaging. In the system described here, the acquisition of scans from a conventional 2D probe is synchronized to probe movement. Motion-gated acquisition reduces the dependency of scan quality on the operator and can detect poor scanning technique. Automatic annotation is facilitated by recording the orientation of the patient. A 'virtual probe' enables a clinician to reslice the acquired data as if the patient were being rescanned. A 'thick reslice' enables spatial compounding to be implemented in the visualization process. The critical scale parameter, which is difficult to automatically determine, is intuitively interpreted as the slice thickness and interactively controlled by the clinician. Real-time volume rendering without prior segmentation of the data is possible using this technique. Shape-based interpolation assists manual segmentation of the data. The distance field from the segmentation process is used to mask the raw data and the result is volume rendered. A 3D scalpel enables efficient refinement of the segmentation by directly editing the volume- rendered view. The 3D scalpel prunes a set of user-defined contours to which a surface is fitted and the enclosed volume computed. A compact set of contours is retained by the system which allows the actions of the user to be undone. Three clinicians have tested the system, acquiring over 100 3D fetal scans, in a hospital environment.

Citation Download Citation

Jonathan C. Carr, Jan L. Stallkamp, Michelle M. Fynes, Andrew H. Gee, Richard W. Prager, Graham M. Treece, Chris Overton, and Laurence Berman "Design of a clinical free-hand 3D ultrasound system", Proc. SPIE 3982, Medical Imaging 2000: Ultrasonic Imaging and Signal Processing, (12 April 2000); https://doi.org/10.1117/12.382234

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