Title :
The motion sensitivity of magnetic resonance imaging: a comparison between Fourier transform imaging and projection reconstruction
Author :
Van de Walle, R. ; Voet, T. ; Lemahien, I.
Author_Institution :
ELIS Dept., Ghent Univ., Belgium
Abstract :
We present a study of the influence of motion on magnetic resonance (MR) imaging. The motion sensitivity of two MR methods is compared: 2D Fourier transform (2D-FT) imaging and projection reconstruction (PR). In case of PR, both the filtered backprojection (FB) reconstruction method and the Gmitro reconstruction method were considered. The PR technique proved to be less sensitive to motion than 2D-FT imaging. Furthermore, the Gmitro algorithm was able to correct artifacts caused by translational motion, as long as the motion frequency was chosen to be lower than a critical frequency
Keywords :
Fourier transforms; biomedical NMR; filtering theory; image reconstruction; medical image processing; 2D Fourier transform imaging; Fourier transform imaging; Gmitro algorithm; Gmitro reconstruction method; MRI; critical frequency; filtered backprojection; magnetic resonance imaging; motion frequency; motion sensitivity; projection reconstruction; translational motion; Fourier transforms; Frequency; Hospitals; Image reconstruction; Imaging phantoms; Magnetic resonance; Magnetic resonance imaging; Magnetic separation; Motion measurement; Reconstruction algorithms;
Conference_Titel :
Engineering in Medicine and Biology Society, 1995., IEEE 17th Annual Conference
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-2475-7
DOI :
10.1109/IEMBS.1995.575198
