Investigation On A Haptic Display System For
Medical Ultrasonic Elasticity Imaging
Author(s)
K. Hamamoto, M. Nakanishi & T. Shiina
Abstract
In the field of medical ultrasonics, ultrasonic elasticity imaging has been
developed and used in practical diagnosis. However, unfortunately, elasticity
information is now displayed on ordinary 2D screens (for example, CRT). Since
elasticity information is haptic information, not visible information, the
information is expected to be displayed in \“the sense of haptic”. In this research,
it is attempted to display this elasticity information on a haptic display. In this
system, a target tissue is expressed by many small cubes in 3D virtual space.
Each cube has its own elasticity information. When a cube is pressed, not only
the cube but some cubes around it are simultaneously moved in the direction of
the pressure, but if the pressure disappears, the cubes come back to their original
position. This movement of cubes can express a dent in the surface of the body.
At that time we can feel haptic sense from the pressed point, which is caused by
the mass and elasticity of some cubes around the pressed point. This newlydevised
system enables to put the haptic sense to close \“Human Haptic”. The
system also enables one to display the haptic sense in real time after getting
elastic information of tissues. This system can realize a virtual palpation system
and may realize a tele-palpation system.
Keywords: tissue characterization, ultrasonic imaging, elasticity imaging,
virtual reality, haptic interface, virtual palpation, real time system.
Keywords
tissue characterization, ultrasonic imaging, elasticity imaging,
virtual reality, haptic interface, virtual palpation, real time system.
Related Book
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