Ultrasound transmission tomography is a potentially promising alternative to standard XRay imaging in medical diagnosis, especially in mammography. This is mainly due to the nonionizing character of ultrasound and high information content of the measured signals that could potentially result in highresolution 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 speedup the assembly of the overdetermined system of the equation.
 Adopting edgepreserving 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 nonhomogeneouos 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 IEEEEMBS, 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 timeofflight based positionaing algorithm. In Proc. of 29th IEEEEMBS conference, pp. 2146–2149, IEEEEMBS, Lyon, 2007.
