Neuroscience 2005 Abstract
| Presentation Number: | 688.9 |
|---|---|
| Abstract Title: | Training for MRI using motion detection conditioning. |
| Authors: |
Jain, S.*1
; Sharma, H.1
; Kim, D.1,2
1Center for Biomedical Imaging, Boston Univ. School of Medicine, Boston, MA 2Department of Anatomy and Neurobiology, Boston Univ. School of Medicine, Boston, MA |
| Primary Theme and Topics |
Techniques in Neuroscience - Computation and Simulation |
| Session: |
688. Computational and Simulation Techniques II Poster |
| Presentation Time: | Tuesday, November 15, 2005 8:00 AM-9:00 AM |
| Location: | Washington Convention Center - Hall A-C, Board # WW12 |
| Keywords: | MRI, FMRI |
Functional magnetic resonance imaging (fMRI) has become a ubiquitous tool for mapping the structure and function of the brain. However, in a large number of subjects, especially pediatric and geriatric patients, getting scanned for the first time is often an uncomfortable experience as they have not been pre-exposed to the scanning environment – around 100dB noise, vibrations, head padding and the need to keep still. We hypothesize that conditioning and personal interactions can improve compliance and reduce anxiety, while motion reduction techniques can successfully reduce artifacts due to head motion. To test this hypothesis, we have built a mock MRI scanner, using the outer shell from a Philips Intera 3.0T scanner. The mock scanner system includes a custom written Windows based software coupled with a head motion detectors (MD-BTD, RMS-BTD, Vernier Technologies), incorporated into a multimedia system with video projection, button response box, a speaker system to play artificially created MRI noise and a vibrating cushion which vibrates in phase with this noise. The subject is trained using a conditioning procedure, which starts with the subject being padded and lowered into the scanner and instructed using the same scanning protocol as in the real scanner. The projection, speaker and vibration systems are then turned on and head movement is observed. The video presentation, which is usually a movie or a video, is halted whenever the subject exhibits head movement above a specified threshold. The system can also be set up to play a certain multimedia file when the maximum motion threshold is exceeded. Over the course of training this threshold is reduced. The results obtained from the real scan data of autistic children who have undergone mock training have shown a decreased amount of head motion. These children have also been observed to have a higher verbal compliance for the scan and a calm and stable scanning experience.
Supported by NIH (NS44825), The Human Frontiers Science Program, The Nancy Lurie Marks Family Foundation
Sample Citation:
[Authors]. [Abstract Title]. Program No. XXX.XX. 2005 Neuroscience Meeting Planner. Washington, DC: Society for Neuroscience, 2005. Online.
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