Ultrasound transmission tomography is a potentially promising alternative to standard X-Ray imaging in medical diagnosis, especially in mammography. This is mainly due to the non-ionizing character of ultrasound and high information content of the measured signals that could potentially result in high-resolution imaging.
Contribution
I have been doing research in the area of USCT in cooperation with USCT team in Forschungszentrum, Karlsruhe.
My contribution so far in this area is following:
- Paralelization of the algorithms using MPI and Matlab distributed toolbox in order to speed-up the assembly of the over-determined system of the equation.
- Adopting edge-preserving regularization technique based on potential functions in order to increase the quality of the recontructed images [1]
- Regularized reconstruction of 3D volume from the ultrasound data
- Implementation of FE simulation of ultrasound waves in homogeneouos and non-homogeneouos environment [2]
Demonstrations
Reconstruction without (upper row) and with (lower row) regularization for various input of simulated data (click to zoom) For details see [1].
Reconstruction of a volume composed of approximately 130000 voxels using about 3 million beams (equations) [the publication will be available soon]):
FE simulation of diffraction in USCT (click to zoom) For details see [2].
Publications
- I.Peterlík, R.Jiřík, N.Ruiter and J.Jan. Ultrasound attenuation transmission tomography using regularized image reconstruction, Radioengineering, vol. 12, no. 2, pp. 251–254, 2008. [PDF]
- D.Hemzal, I.Peterlík J.Roleček, and J.Jan. 3d simulation of diffraction in ultrasonic computed tomography. In Proceedings, 30th int. conference IEEE-EMBS, pp. 454–457, 2008. [PDF]
- I.Peterlík, R.Jiřík, J.Jan and N.Ruiter. Ultrasound attenuation transmission tomography using regularized image reconstruction. Analysis of Biomedical Signals and Images, vol. 19, no. 1, pp. 251–254, 2008.
- I.Peterlík, R.Jiřík, R.Stotzka, and N.Ruiter, “Reconstruction technique for ultrasound transmission tomography,” in Proceedings of International Conference ITAB 2006, pp. non–paginated, 6 pages, 2006.
- A.Filipík, I.Peterlík, D.Hemzal, J.Jan, and R.Jiřík. Calibrating an ultrasonic compted tomography system using a time-of-flight based positionaing algorithm. In Proc. of 29th IEEE-EMBS conference, pp. 2146–2149, IEEE-EMBS, Lyon, 2007.
|
|
