Title :
Tomography simulation and reconstruction tools applied in the evaluation of parameters and techniques
Author :
de Azevedo, D.F.G. ; Helegda, S. ; Godoy, P.C. ; de Castro, F. ; de Castro, M.C.
Author_Institution :
Dept. of Electr. Eng., Pontifical Catholic Univ., Porto Alegre, Brazil
Abstract :
We introduce a tomography platform consisting of a new set of programs written in ANSI C++ to help researchers to develop and to evaluate tomography simulation/reconstruction based on the direct Fourier method. We applied these tools in the evaluation of tomographic techniques. We describe and compare two techniques to overcome the inferior image quality due to the inherent artifacts of the direct Fourier method: the increase of the zero-padding factor and the resampling grid density factor.
Keywords :
Fourier analysis; computerised tomography; digital simulation; image reconstruction; image sampling; interpolation; medical image processing; phantoms; ANSI C++; Shepp-Logan Head Phantom; direct Fourier method; image quality; inherent artifacts; phantom; radiology; reconstruction tools; resampling grid density factor; tomography platform; tomography simulation; zero-padding factor; Attenuation; Data acquisition; Density functional theory; Detectors; Equations; Image quality; Image reconstruction; Object detection; Radiology; Tomography;
Conference_Titel :
Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE
Print_ISBN :
0-7803-7211-5
DOI :
10.1109/IEMBS.2001.1017224
