Image-Guided Procedures, Robotic Interventions, and Modeling

Effects of line fiducial parameters and beamforming on ultrasound calibration

[+] Author Affiliations
Golafsoun Ameri, John S. H. Baxter, A. Jonathan McLeod, Terry M. Peters, Elvis C. S. Chen

Robarts Research Institute, London, Ontario, Canada

Western University, Biomedical Engineering Graduate Program, London, Ontario, Canada

J. Med. Imag. 4(1), 015002 (Feb 28, 2017). doi:10.1117/1.JMI.4.1.015002
History: Received May 5, 2016; Accepted February 8, 2017
Text Size: A A A

Abstract.  Ultrasound (US)-guided interventions are often enhanced via integration with an augmented reality environment, a necessary component of which is US calibration. Calibration requires the segmentation of fiducials, i.e., a phantom, in US images. Fiducial localization error (FLE) can decrease US calibration accuracy, which fundamentally affects the total accuracy of the interventional guidance system. Here, we investigate the effects of US image reconstruction techniques as well as phantom material and geometry on US calibration. It was shown that the FLE was reduced by 29% with synthetic transmit aperture imaging compared with conventional B-mode imaging in a Z-bar calibration, resulting in a 10% reduction of calibration error. In addition, an evaluation of a variety of calibration phantoms with different geometrical and material properties was performed. The phantoms included braided wire, plastic straws, and polyvinyl alcohol cryogel tubes with different diameters. It was shown that these properties have a significant effect on calibration error, which is a variable based on US beamforming techniques. These results would have important implications for calibration procedures and their feasibility in the context of image-guided procedures.

Figures in this Article
© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Golafsoun Ameri ; John S. H. Baxter ; A. Jonathan McLeod ; Terry M. Peters and Elvis C. S. Chen
"Effects of line fiducial parameters and beamforming on ultrasound calibration", J. Med. Imag. 4(1), 015002 (Feb 28, 2017). ; http://dx.doi.org/10.1117/1.JMI.4.1.015002


Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

PubMed Articles
Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.