{"id":6097,"date":"2013-02-13T01:43:12","date_gmt":"2013-02-13T07:43:12","guid":{"rendered":"https:\/\/uwm.edu\/news\/?p=6097"},"modified":"2015-11-12T08:28:51","modified_gmt":"2015-11-12T14:28:51","slug":"uwm-faculty-startup-applies-motion-measurement-research","status":"publish","type":"post","link":"https:\/\/uwm.edu\/news\/uwm-faculty-startup-applies-motion-measurement-research\/","title":{"rendered":"51ÁÔÆæ faculty startup applies motion measurement research"},"content":{"rendered":"<figure id=\"attachment_6115\" aria-describedby=\"caption-attachment-6115\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/uwm.edu\/news\/wp-content\/uploads\/sites\/41\/2013\/02\/metria_j2-2jjaqgf.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-6115\" title=\"metria_j2\" src=\"https:\/\/uwm.edu\/news\/wp-content\/uploads\/sites\/41\/2013\/02\/metria_j2-2jjaqgf.jpg\" alt=\"\" width=\"600\" height=\"345\" srcset=\"https:\/\/uwm.edu\/news\/wp-content\/uploads\/sites\/41\/2013\/02\/metria_j2-2jjaqgf.jpg 600w, https:\/\/uwm.edu\/news\/wp-content\/uploads\/sites\/41\/2013\/02\/metria_j2-2jjaqgf-300x173.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><figcaption id=\"caption-attachment-6115\" class=\"wp-caption-text\">Brian Armstrong (right) and Kristian O\u2019Connor (left) prepare a student subject for gait analysis using moire phase tracking equipment. Armstrong is a co-founder of Metria Innovations Inc., the startup that is taking the equipment to market. (Photo by Alan Magayne-Roshak)<\/figcaption><\/figure>\n<p>Magnetic resonance imaging (MRI) is a powerful diagnostic tool, but because the patient must remain completely still during the scan, the technology can be challenging to use with children and patients who are disabled.<\/p>\n<p>A motion detection system co-developed by 51ÁÔÆæ engineering professor Brian Armstrong can help address that problem. His system produces accurate measurements of movements, and can be used to correct the motion of patient movements that could otherwise ruin the medical image.<\/p>\n<p>Motion correction for MRI could reduce the need to sedate children for medically necessary scans, creating a safer and less expensive process, Armstrong says. It also could eventually be used for research in brain development.<\/p>\n<p>Armstrong has been involved with efforts to commercialize motion-detection equipment through Metria Innovation Inc., a startup firm in Wauwatosa that launched in 2008 to commercialize this novel motion-tracking technology.<\/p>\n<p>It is one of six startup companies that have evolved from 51ÁÔÆæ research.<\/p>\n<p>The system he helped to create, called moir\u00e9 phase tracking, incorporates a motion-tracking marker and a single camera. The system makes use of a phenomenon you may have noticed on silk or satin fabric when darker shaded swaths appear as one layer of fabric shifts in front of another. Called moir\u00e9 patterns, these occur when light passes through two overlapping weaves.<\/p>\n<p>The moir\u00e9 patterns of a Metria motion-tracking marker are a highly engineered phenomenon. \u201cMoir\u00e9 patterns amplify the optical effect of angles, permitting accurate measurement in each image,\u201d says Randy Holl, an adviser to Metria Innovation and CIO of Contact Solutions, Inc.<\/p>\n<p>\u201cFrom each image we can very accurately detect the orientation of the motion-tracking marker,\u201d adds Armstrong. \u201cFor motion tracking, software interprets the changing moir\u00e9 patterns, yielding an exact location of the tagged part of the body. The imaging process moves continuously with the subject.\u201d<\/p>\n<p>The researchers spent years making the process faster and more reliable. In 2007, it took about eight seconds to process an image. Today the moir\u00e9 phase tracking system can process more than 100 images per second.<\/p>\n<p>Moir\u00e9 phase tracking technology is being targeted to researchers and research laboratories. It is already in use at seven scanning facilities around the world. Armstrong and Kristian O\u2019Connor, chair of 51ÁÔÆæ\u2019s kinesiology department, are also working to apply moir\u00e9 phase tracking to the analysis of human movement during walking. Gait is affected by such conditions as knee and hip injuries, arthritis and orthopedic surgery.<\/p>\n<p>Since 2006, O\u2019Connor and Armstrong have won two grants from both the National Institutes of Health and 51ÁÔÆæ\u2019s Research Growth Initiative to develop the technology, supporting 51ÁÔÆæ graduate students and moving the technology closer to being a useful tool for analysis of human gait. O\u2019Connor and Armstrong are currently working on an SBIR Phase II proposal to continue this work.<\/p>\n<p>The 51ÁÔÆæ Research Foundation has licensed two patents-pending to Metria Innovation. One provides an opportunity to further optimize the motion tracking marker, and the other involves using a ceramic element to reduce vibration in cameras that are used to track motion in a MRI scanner. The ceramic camera is already in practical use.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Motion correction for MRI could reduce the need to sedate children for medically necessary scans.<\/p>\n","protected":false},"author":40008,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","uwm_wg_additional_authors":[]},"categories":[174,175],"tags":[],"section":[136,135],"display_categories":[],"related-coverage":[],"uwmnews-feed":[],"class_list":["post-6097","post","type-post","status-publish","format-standard","hentry","category-news","category-research","section-biotechnology","section-health"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>51ÁÔÆæ faculty startup applies motion measurement research<\/title>\n<meta name=\"description\" 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