Title :
Magnetic resonance image enhancement using V-filter
Author :
Yamamoto, Hideki ; Sugita, Katsuhiko ; Kanzaki, Noriko ; Johja, Ikuo ; Hiraki, Yoshio ; Kuwahara, Michiyoshi
Author_Institution :
Okayama Univ., Japan
fDate :
6/1/1990 12:00:00 AM
Abstract :
A method for enhancing the boundaries of magnetic resonance images (MRIs) using a V-filter (a spatial nonlinear filter) is presented. By iterated V-filtering the signal-to-noise ratio of the MRI can be increased while preserving edge sharpness. A simulation experiment was carried out to evaluate the filter, using clinical brain images. The boundaries of the brain tumor and edematous region were precisely extracted by the region segmentation techniques.<>
Keywords :
biomedical NMR; computerised picture processing; digital simulation; iterative methods; magnetic resonance spectroscopy; medical diagnostic computing; spatial filters; V-filter; biomedical NMR; boundaries; brain tumor; clinical brain images; computerised picture processing; edematous region; edge sharpness; iteration; magnetic resonance images; region segmentation; signal-to-noise ratio; spatial nonlinear filter; Biomedical imaging; Distortion measurement; Image enhancement; Image segmentation; Magnetic resonance; Magnetic resonance imaging; Magnetic separation; Medical diagnostic imaging; Neoplasms; Signal to noise ratio;
Journal_Title :
Aerospace and Electronic Systems Magazine, IEEE
