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FASTRAK® Case Studies
Research Studies
Correlation Between Symphesis Pubis' Opening and SIJ's Opening During Open Book Injury
FASTRAK was used to measure the relative positions and orientations of the sacrum, right and left ilia. Careful dissection was conducted in order to isolate the pelvic ring and to remove all excessive muscles beyond the L5 level while keeping intact the ligamentous structures that provide stability to the pelvic ring. Head Shape Research: Stylus When used together with Polhemus digitizing hardware such as FASTRAK or ISOTRAK, LOCATOR allows you to accurately measure an external head shape in three dimensions. This data may then be used for MRI coregistration. Electrode locations may be determined by touching with a stylus. Head movement is auto compensated with 1-3 head mounted sensors. Kinematics Measurements of Snowboarders' Ankles FASTRAK, with four six-degree-of-freedom position sensors, was converted into a fully portable system operating on two 12-volt batteries and connected to laptop computer. The sensors were attached to the shanks and feet of a snowboarder. Medical Speech - Essence of HandVoice2 FASTRAK, obtains poses of both arms and hands through electromagnetic tracking. The Super Glove, developed by Nissho Electronics Inc., acquires poses of finger joints and angles. HandVoice2 software from Nissho Electronics Corporation, Japan, converts sign language to voice on-line and allows someone who can not speak to lead a more interactive social life. A keyboard and mouse are not used during conversation. Supporting Ultrasound Diagnosis Using an Animated 3D Model of the Heart A complex heart model (approximately 30,000 triangles), requiring real-time rendering and interaction utilizes an Indigo Extreme graphics subsystem. The workstation is connected to a FASTRAK installed in the transducer. The FASTRAK sensor continuously monitors position and orientation of the transducer. Natural Communication with Machines One objective for tactile communication is to allow a human to interact in meaningful ways with computed objects in a Virtual environment. A Polhemus coil (FASTRAK sensor) placed on the wrist provides hand position information to the computer. Finger and joint deflections are detected by optical fibers that innervate the glove. Absolute position is sensed by a Polhemus coil on the back of the wrist. Research Navigation - Spatial Navigation Movements are recorded with the Polhemus FASTRAK system using sensors on arms and legs, and are described using differential geometry descriptors such as curvature and torsion. These descriptions are then used by the movement learning system to recognize and analyze movement patterns. Virtual Reality Interaction Toolbox Head mounted display with the Polhemus FASTRAK system was employed to virtually steer a rocket propelled vehicle around the campus of the TU-Ilmenau. The NASA Ames Virtual Planetary Exploration (VPE) Testbed The Virtual Planetary Exploration (VPE) is a testbed for experimenting with immersive Virtual Reality (VR) technology applied to scientific exploration of planetary terrain surfaces. VPE includes several Virtual Reality devices; the primary device is a stereo, color, LCD head-mounted display (HMD) from Virtual Research, Inc. A four channel, six-degree-of-freedom (DOF) magnetic tracking device, FASTRAK, developed by Polhemus, is the primary position and orientation sensing device. The Use of Virtual Reality in Occupational Training of People with Learning Disabilities The project investigated whether any beneficial effects of virtual training on a simple sensory-motor task would transfer to improved real task performance. 3D movement of a ring along a wire was controlled using a Polhemus FASTRAK sensor and receiver. Practice in this simple virtual environment was shown to transfer to real task performance. The Pelvis as Physical Centre in Virtual Environments The VE's are run on Chalmer's Medialab's five-wall, cave-type immersive 3D-Cube system, connected to a 14-processor SGI Onyx2 computer. For motion tracking in the 3D-Cube, a Polhemus electromagnetic tracking system, FASTRAK, with four sensors for placement on the body was used. Development of a Virtual Laboratory for the Study of Complex Human Behavior A go-kart mounted on a 6DOF motion platform provides kinesthetic feedback to subjects as they drive through a virtual town; a dual-haptic interface consisting of two SensAble Phantom extended range devices allows free motion and realistic force -feedback within a 1m3 volume. |
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