scholarly journals Circular ultrasound compounding by designed matrix weighting

2006 ◽  
Vol 25 (6) ◽  
pp. 732-741 ◽  
Author(s):  
G.R. Bashford ◽  
J.L. Morse
Keyword(s):  
Ultrasound Compounding

Markerless Inside-Out Tracking for 3D Ultrasound Compounding

2018 ◽  
pp. 56-64
Author(s):  
Benjamin Busam ◽  
Patrick Ruhkamp ◽  
Salvatore Virga ◽  
Beatrice Lentes ◽  
Julia Rackerseder ◽  
...  
Keyword(s):  
3D Ultrasound ◽  
Ultrasound Compounding ◽  
Inside Out

Ultrasound Compounding With Automatic Attenuation Compensation Using Paired Angle Scans

2007 ◽  
Vol 33 (4) ◽  
pp. 630-642 ◽  
Author(s):  
Graham M. Treece ◽  
Andrew H. Gee ◽  
Richard W. Prager
Keyword(s):  
Attenuation Compensation ◽  
Ultrasound Compounding

scholarly journals Good and bad boundaries in ultrasound compounding: preserving anatomic boundaries while suppressing artifacts

2021 ◽  
Author(s):  
Alex Ling Yu Hung ◽  
John Galeotti
Keyword(s):  
Best Practices ◽  
3D Ultrasound ◽  
The Other ◽  
Ultrasound Images ◽  
Ultrasound Probe ◽  
Single Image ◽  
Volume Reconstruction ◽  
View Reconstruction ◽  
Ultrasound Compounding ◽  
Future Utility

Abstract Purpose Ultrasound compounding is to combine sonographic information captured from different angles and produce a single image. It is important for multi-view reconstruction, but as of yet there is no consensus on best practices for compounding. Current popular methods inevitably suppress or altogether leave out bright or dark regions that are useful and potentially introduce new artifacts. In this work, we establish a new algorithm to compound the overlapping pixels from different viewpoints in ultrasound. Methods Inspired by image fusion algorithms and ultrasound confidence, we uniquely leverage Laplacian and Gaussian pyramids to preserve the maximum boundary contrast without overemphasizing noise, speckles, and other artifacts in the compounded image, while taking the direction of the ultrasound probe into account. Besides, we designed an algorithm that detects the useful boundaries in ultrasound images to further improve the boundary contrast. Results We evaluate our algorithm by comparing it with previous algorithms both qualitatively and quantitatively, and we show that our approach not only preserves both light and dark details, but also somewhat suppresses noise and artifacts, rather than amplifying them. We also show that our algorithm can improve the performance of downstream tasks like segmentation. Conclusion Our proposed method that is based on confidence, contrast, and both Gaussian and Laplacian pyramids appears to be better at preserving contrast at anatomic boundaries while suppressing artifacts than any of the other approaches we tested. This algorithm may have future utility with downstream tasks such as 3D ultrasound volume reconstruction and segmentation.

scholarly journals A novel calibration phantom for combining echocardiography with electromagnetic tracking

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Robert Kreher ◽  
Thomas Groscheck ◽  
Kristjan Qarri ◽  
Bernhard Preim ◽  
Alexander Schmeisser ◽  
...  
Keyword(s):  
Degrees Of Freedom ◽  
Absolute Difference ◽  
Calibration Error ◽  
Accuracy Evaluation ◽  
Volume Reconstruction ◽  
Ultrasound Localization ◽  
Calibration Phantom ◽  
2D Ultrasound ◽  
Ultrasound Compounding ◽  
3D Volume

AbstractUltrasound compounding techniques offer the possibility to enlarge the otherwise limited field of view of ultrasound. However, existing works mainly rely on larger ultrasound sensors. In this work, we attach electromagnetic (EM) tracking sensors to small tubular echo probes, namely an intracardiac echocardiographic (ICE) probe and a transesophageal echocardiographic (TEE) transducer. The EM tracking allows, when synchronized to the ultrasound, localization of the probes in either 5 DOF (Degrees of Freedom) or 6 DOF without line-of-sight requirement. For computation of the references between the two systems, we developed a novel customized 3D-printable phantom, which is especially convenient for tubular probes that acquire images laterally. Calibration with the phantom and 3D volume reconstruction was conducted in the Plus Toolkit. The volume reconstructor uses the captured position and orientation information to fuse 2D ultrasound slices into a compounded volume. Mean calibration error is below 2.5 mm for ICE and TEE. An accuracy evaluation of the 3D reconstruction using an object of known geometry revealed that tracking with 5 DOF provides unsatisfactory results, while the combination of 6 DOF and TEE achieved a mean absolute difference of 3.08 mm. Our calibration phantom fCal-Echo1.0 is openly available at http://perk-software.cs.queensu.ca/plus/doc/nightly/modelcatalog/.

Sign in / Sign up

Export Citation Format

Share Document