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Erschienen in: International Journal of Computer Assisted Radiology and Surgery 12/2015

01.12.2015 | Original Article

Five-dimensional ultrasound system for soft tissue visualization

verfasst von: Nishikant P. Deshmukh, Jesus J. Caban, Russell H. Taylor, Gregory D. Hager, Emad M. Boctor

Erschienen in: International Journal of Computer Assisted Radiology and Surgery | Ausgabe 12/2015

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Abstract

Purpose

A five-dimensional ultrasound (US) system is proposed as a real-time pipeline involving fusion of 3D B-mode data with the 3D ultrasound elastography (USE) data as well as visualization of these fused data and a real-time update capability over time for each consecutive scan. 3D B-mode data assist in visualizing the anatomy of the target organ, and 3D elastography data adds strain information.

Methods

We investigate the feasibility of such a system and show that an end-to-end real-time system, from acquisition to visualization, can be developed. We present a system that consists of (a) a real-time 3D elastography algorithm based on a normalized cross-correlation (NCC) computation on a GPU; (b) real-time 3D B-mode acquisition and network transfer; (c) scan conversion of 3D elastography and B-mode volumes (if acquired by 4D wobbler probe); and (d) visualization software that fuses, visualizes, and updates 3D B-mode and 3D elastography data in real time.

Results

We achieved a speed improvement of 4.45-fold for the threaded version of the NCC-based 3D USE versus the non-threaded version. The maximum speed was 79 volumes/s for 3D scan conversion. In a phantom, we validated the dimensions of a 2.2-cm-diameter sphere scan-converted to B-mode volume. Also, we validated the 5D US system visualization transfer function and detected 1- and 2-cm spherical objects (phantom lesion). Finally, we applied the system to a phantom consisting of three lesions to delineate the lesions from the surrounding background regions of the phantom.

Conclusion

A 5D US system is achievable with real-time performance. We can distinguish between hard and soft areas in a phantom using the transfer functions.

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Metadaten
Titel
Five-dimensional ultrasound system for soft tissue visualization
verfasst von
Nishikant P. Deshmukh
Jesus J. Caban
Russell H. Taylor
Gregory D. Hager
Emad M. Boctor
Publikationsdatum
01.12.2015
Verlag
Springer Berlin Heidelberg
Erschienen in
International Journal of Computer Assisted Radiology and Surgery / Ausgabe 12/2015
Print ISSN: 1861-6410
Elektronische ISSN: 1861-6429
DOI
https://doi.org/10.1007/s11548-015-1277-z

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