Haptic guided seeding of MRA images for semi-automatic segmentation

We investigate how stereo graphics and haptics can be combined to facilitate the seeding procedure in semi-automatic segmentation of magnetic resonance angiography (MRA) images. Real-time volume rendering using maximum intensity projections (MIPs) has been implemented together with a haptic renderin...

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Bibliographic Details
Published in2004 2nd IEEE International Symposium on Biomedical Imaging: Nano to Macro (IEEE Cat No. 04EX821) pp. 288 - 291 Vol. 1
Main Authors Vidholm, E., Tizon, X., Nystrom, I., Bengtsson, E.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2004
Subjects
Data visualization
Displays
Force feedback
Graphics
Haptic interfaces
Image segmentation
Imaging phantoms
Magnetic resonance
Mirrors
Rendering (computer graphics)
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Summary:We investigate how stereo graphics and haptics can be combined to facilitate the seeding procedure in semi-automatic segmentation of magnetic resonance angiography (MRA) images. Real-time volume rendering using maximum intensity projections (MIPs) has been implemented together with a haptic rendering method that provides force feedback based on local gradients and intensity values. This combination allows a user to trace vessels in the image, and to place seed-points directly in three-dimensional data set. Seed-regions are propagated from the seed-points according to an algorithm that favors bright voxels. An experienced user have tested the interface on a whole-body MRA image with promising results.
ISBN:0780383885
9780780383883
DOI:10.1109/ISBI.2004.1398531