Acronym HEART 3D
Funding Reference FCT - POSI/33726/CPS/2000
Dates 2000|2003
Summary

This project studies heart diagnosis tools based on 3D ultrasound techniques. The project has three main goals: i) the development of image reconstruction and heart measurement algorithms for the analysis of the cardiac cycle and computation of clinical parameters (ventricular volume, ejection fraction and wall thickness); ii) implementation of an experimental set up for the acquisition of 3D data during medical examinations of the heart and iii) clinical evaluation of the 3D ultrasound algorithms developed in the project Bayesian reconstruction methods will be used to estimate a 3D+T model of the heart at different instants of the cardiac cycle. The region of interest will be described using a multi-scale representation based on 3D splines. The motion and deformation of the heart cavities will be obtained by segmenting the reconstructed volume at each instant of time. To fill the gaps between the inspection planes some kind of interpolation has to be devised. This operation is embodied in the Bayesian reconstruction provided that an adequate prior is used. Unfortunately popular Gaussian priors have an undesirable smoothing effect at the boundaries, which degrades the estimation of the heart walls. Therefore, a discontinuity preserving prior will be used instead. Another key aspect for achieving high quality results concerns the data model used for reconstruction.

Research Groups Signal and Image Processing Group (SIPG)
Project Partners Cardiology Department of Hospital de Santa Maria, University of Aveiro
ISR/IST Responsible
Jorge S. Marques
[1] João Sanches, Jorge S. Marques, Compensation of Log-Compressed Images for 3D Ultrasound, Ultrasound in Medicine and Biology, Vol. 29, No. 2, 247-261, 2003
[2] João Sanches, Jorge S. Marques, A Multi-Scale Algorithm for Three Dimensional Free Hand Ultrasound, Ultrasound in Medicine and Biology, Vol. 28, 1029-1040, 2002 - PDF
[3] João Sanches, Jorge S. Marques, A Rayleigh Reconstruction/Interpolation Algorithm for 3D Ultrasound, Pattern Recognition Letters, 21, 917-926, 2000
[4] João Sanches, Jorge S. Marques, MAP signal reconstruction with non regular grids, International Conference on Image Analysis and Recognition, LNCS, Vol. 3211, pp. 204-211, 2004
[5] Jacinto Nascimento, Jorge S. Marques, João Sanches, Estimation of Cardiac Phases in Echographic Images Using Multiple Models, Proc. ICIP2003 - The IEEE International Conference on Image Processing, Barcelona, Spain, 2003 - PDF
[6] João Sanches, Jorge S. Marques, A MAP estimation algorithm using IIR recursive filters, Proc. EMMCVPR2003 - 4th International Workshop on Energy Minimization Methods in Computer Vision and Pattern Recognition, Lisbon, Portugal, 2003 - PDF
[7] João Sanches, Jorge S. Marques, Fausto Pinto, Paulo J. Ferreira, A 3D Ultrasound System for Medical Diagnosis, Proc. of IbPRIA2003 - 1st Iberian Conference on Pattern Recognition and Image Analysis, Mallorca, Spain, 2003 - PDF
[8] João Sanches, Jorge S. Marques, A MAP IIR Filter for 3D Ultrasound, IEEE International Conference on Image Processing, Rochester, 957-960, Vol. II, 2002 - PDF
[9] João Sanches, Jorge S. Marques, A 3D Ultrasound Algorithm with Alignment and Nonlinearity Compensation, 2nd Workshop on Pattern Recognition in Information, Systems, 156-172, Alicante, 2002
[10] João Sanches, Jorge S. Marques, An Algorithm for 3D Ultrasound Imaging, 5th Ibero American Symposium on Pattern Recognition, Lisbon, 357-366, 2000
[11] João Sanches, Jorge S. Marques, Alignment-by-Reconstruction for 3D Ultrasound Imaging, International Conference Pattern Recognition, vol. 3, 41-44, Barcelona, 2000
[12] João Sanches, Jorge S. Marques, A Recursive Filter for 3D MAP reconstruction, 12th Portuguese Conference on Pattern Recognition, Aveiro, 2002 - PDF
[13] João Sanches, Jorge S. Marques, A Retrieval Algorithm for Log-compressed Ultrasound Images, Proc. 11th Portuguese Conference on Pattern Recognition, Porto, 421-422, 2000
[14] João Sanches, Jorge S. Marques, 3D Reconstruction from Log-Compressed Rayleigh Images, Proc. of ICIP2001 - IEEE International Conference on Image Processing, pp. 345-348, Thessaloniki, 2001 - PDF
[15] João Sanches, Jorge S. Marques, A Fast MAP Algorithm for 3D Ultrasound, Proc. of 3rd International Workshop on Energy Minimization Methods in Computer Vision and Pattern Recognition, 63-74, 2001
[16] João Sanches, Jorge S. Marques, Joint Image Registration and Volume Reconstruction for 3D Ultrasound, Pattern Recognition Letters, Special Issue on Ultrasonic Image Processing and Analysis, vol 24, 799-808, 2002