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Color-Coded MRI in Development to Make Scans Easier to Read

By MedImaging International staff writers
Posted on 27 Apr 2011
An engineering researcher is trying to bring color to the black-and-white realm of magnetic resonance imaging (MRI) to make the scans easier to read.

Dr. Li Sun, an associate professor of mechanical engineering in the University of Houston's (UH; TX, USA) Cullen College of Engineering, is working on developing a new class of contrast agents by using iron nanostructures to provide color to MR images for the first time. Dr. Sun recently received a three-year, US$300,000 grant from the US National Science Foundation for MRI research. Original funding came from a seed grant from the Alliance for Nanohealth. Project collaborators include Dr. Dong Liu, an assistant professor of mechanical engineering at UH, and researchers at the University of Texas Health Science Center (San Antonio, USA).

"Currently, MRIs are in black and white. If you use one of the existing contrasting agents, you only adjust the gray scale, which makes the bright parts of the image brighter and the dark parts darker. These new nanostructures will allow you to use different colors to identify each type of tissue," Dr. Sun said.

Most nanostructures are shaped like rods or spheres. Iron nanostructures come in less common shapes, such as dumbbells or tubes, and respond only to a specific magnetic frequency. But unusual shapes are expensive to produce at the necessary nanolevel, prompting Sun to work on a more economical fabrication method for these structures. After these nanostructures are generated, they will be coated in proteins that bond only with certain types of cells, such as those that make up a ligament or a specific internal organ.

In a clinical environment, these new agents will be introduced into a patient, typically in a liquid that will be injected. The patient will then undergo MRI scanning, with the machine programmed to scan at the magnetic frequencies assigned to the different nanostructures injected into the patient. The MRI unit will assign each type of nanostructure it senses a particular color--such as red for a ligament and blue for bone. The scans will be combined into a single, color-coded image.

According to Dr. Sun, creating easier-to-read MRI scans is not the only use for these new nanostructures. Individual cells, such as stem cells, could be tagged with the nanostrucutures and then tracked in the human body. Moreover, nanostructures that bond with cancer cells could be heated with a high-frequency magnetic field, destroying the cancer cells but leaving nearby healthy cells intact, Dr. Sun reported.

"This is high-risk, high-reward research," concluded Dr. Sun. "If we're successful, we'll not only change how much we can learn from an MRI, but impact a lot of other areas of healthcare and research."

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University of Houston
University of Texas Health Science Center



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96 (38.862228393555): SELECT show_live FROM jos_com_show_setting LIMIT 1
97 (27.894973754883): SELECT show_live FROM jos_com_show_setting LIMIT 1
98 (29.087066650391): SELECT show_live FROM jos_com_show_setting LIMIT 1
99 (28.133392333984): SELECT show_live FROM jos_com_show_setting LIMIT 1
100 (28.133392333984): SELECT show_live FROM jos_com_show_setting LIMIT 1
101 (27.894973754883): SELECT show_live FROM jos_com_show_setting LIMIT 1
102 (26.941299438477): SELECT show_live FROM jos_com_show_setting LIMIT 1
103 (28.133392333984): SELECT show_live FROM jos_com_show_setting LIMIT 1
104 (74.148178100586): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND published='1' LIMIT 1
105 (42.915344238281): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND published='1' LIMIT 1
106 (51.975250244141): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294734714 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
107 (46.968460083008): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294734714 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
108 (77.962875366211): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND published='1' LIMIT 1
109 (46.014785766602): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND published='1' LIMIT 1
110 (49.114227294922): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.id=294734714 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
111 (618.93463134766): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.id=294734714 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
112 (607.01370239258): SELECT dp.name, dp.id, dp2.name as channel, ex.name as author_name, ex.specialization, ex.images FROM jos_deeppockets as dp LEFT JOIN jos_experts as ex ON ex.id = dp.author LEFT JOIN jos_deeppockets as dp2 ON dp2.id = dp.fid WHERE dp.author != 0 AND dp.cat = 10 AND dp.published = 1 AND ( (dp.fid = 294743300) OR (dp.fid = 294743301) OR (dp.fid = 294743302) OR (dp.fid = 294743303) OR (dp.fid = 294743304) OR (dp.fid = 294743305) OR (dp.fid = 294743306) OR (dp.fid = 294743307) OR (dp.fid = 294743308) OR (dp.fid = 294743309) OR (dp.fid = 294743310) ) ORDER BY RAND() LIMIT 1
113 (339.98489379883): SELECT dp.name, dp.id, dp2.name as channel, ex.name as author_name, ex.specialization, ex.images FROM jos_deeppockets as dp LEFT JOIN jos_experts as ex ON ex.id = dp.author LEFT JOIN jos_deeppockets as dp2 ON dp2.id = dp.fid WHERE dp.author != 0 AND dp.cat = 10 AND dp.published = 1 AND ( (dp.fid = 294743300) OR (dp.fid = 294743301) OR (dp.fid = 294743302) OR (dp.fid = 294743303) OR (dp.fid = 294743304) OR (dp.fid = 294743305) OR (dp.fid = 294743306) OR (dp.fid = 294743307) OR (dp.fid = 294743308) OR (dp.fid = 294743309) OR (dp.fid = 294743310) ) ORDER BY RAND() LIMIT 1
114 (79.870223999023): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND published='1' LIMIT 1
115 (80.108642578125): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND published='1' LIMIT 1
116 (51.975250244141): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND published='1' LIMIT 1
117 (37.908554077148): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND published='1' LIMIT 1
118 (75.101852416992): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND published='1' LIMIT 1
119 (51.975250244141): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND published='1' LIMIT 1
120 (46.014785766602): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND published='1' LIMIT 1
121 (37.908554077148): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND published='1' LIMIT 1
122 (339.98489379883): SELECT * FROM trending_articles WHERE `journal_id` = 10 AND `timestamp` <= NOW() + INTERVAL 7 DAY ORDER BY `order`
123 (!!!!! 31661.033630371): SELECT * FROM jos_deeppockets WHERE jos_deeppockets.cat = 10 AND jos_deeppockets.type = 'deeppockets_item' AND jos_deeppockets.published = 1 AND jos_deeppockets.created + INTERVAL 14 DAY >= NOW() ORDER BY jos_deeppockets.hits DESC LIMIT 7
124 (!!!!! 1516.1037445068): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294734714 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294734714 AND type='deeppockets_item' AND published='1' LIMIT 1
125 (!!!!! 30521.154403687): ( SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.video != '' AND dp.video_source != '' AND dp.cat = 10 AND dp.published = 1 AND dp.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) UNION ( SELECT dpa.id, dpa.name, dpa.title, dpa.video, dpa.video_source, dpa.created FROM jos_deeppockets_archive AS dpa WHERE dpa.video != '' AND dpa.video_source != '' AND dpa.cat = 10 AND dpa.published = 1 AND dpa.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) ORDER BY created DESC LIMIT 3
126 (112.05673217773): ( SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.video != '' AND dp.video_source != '' AND dp.cat = 10 AND dp.published = 1 AND dp.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) UNION ( SELECT dpa.id, dpa.name, dpa.title, dpa.video, dpa.video_source, dpa.created FROM jos_deeppockets_archive AS dpa WHERE dpa.video != '' AND dpa.video_source != '' AND dpa.cat = 10 AND dpa.published = 1 AND dpa.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) ORDER BY created DESC LIMIT 3
127 (62.942504882812): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803337 LIMIT 1
128 (46.014785766602): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803337 LIMIT 1
129 (62.942504882812): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803276 LIMIT 1
130 (41.007995605469): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803276 LIMIT 1
131 (462.05520629883): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets_archive AS dp WHERE dp.id = 294803276 LIMIT 1
132 (60.081481933594): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets_archive AS dp WHERE dp.id = 294803276 LIMIT 1
133 (51.975250244141): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294802958 LIMIT 1
134 (39.100646972656): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294802958 LIMIT 1
135 (535.96496582031): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
136 (771.04568481445): SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
137 (61.03515625): SELECT name FROM jos_deeppockets WHERE id=212
138 (40.054321289062): SELECT name FROM jos_deeppockets WHERE id=212
139 (689.02969360352): SELECT *, DATE_FORMAT(publish_up,'%d %b %Y') AS date_publish_up, DATE_FORMAT(publish_down,'%d %b %Y') AS date_publish_down FROM jos_events WHERE state=1 AND publish_up > NOW() and extra_info REGEXP '((;)|(^))212((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
140 (900.0301361084): SELECT *, DATE_FORMAT(publish_up,'%d %b %Y') AS date_publish_up, DATE_FORMAT(publish_down,'%d %b %Y') AS date_publish_down FROM jos_events WHERE state=1 AND publish_up > NOW() and extra_info REGEXP '((;)|(^))212((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
141 (!!!!! 2096.1761474609): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND published='1' LIMIT 1
142 (60.081481933594): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND published='1' LIMIT 1
143 (!!!!! 14913.082122803): TRUNCATE TABLE jos_trademed_module
144 (141.14379882812): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294734714 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
145 (93.936920166016): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294734714 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
146 (860.92948913574): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
147 (88.930130004883): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
148 (96.08268737793): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND published='1' LIMIT 1
149 (69.141387939453): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND published='1' LIMIT 1
150 (!!!!! 1635.0746154785): SELECT jos_item.* FROM jos_item INNER JOIN jos_number ON jos_item.numberID=jos_number.id WHERE 1=1 AND (jos_item.imgMini<>'') AND jos_item.type='L' AND jos_item.numberID= ( SELECT jos_number.id FROM jos_number WHERE jos_number.journalID IN (10) and jos_number.id in (select distinct jos_number.id from jos_number join jos_item on jos_item.numberid=jos_number.id where jos_item.type='P') ORDER BY (CONVERT(SUBSTRING(issue,1,2),SIGNED) + (CONVERT(SUBSTRING(issue,3,2),SIGNED)*100)) DESC LIMIT 0,1 ) ORDER BY RAND() DESC LIMIT 6
151 (102.99682617188): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND published='1' LIMIT 1
152 (75.101852416992): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND published='1' LIMIT 1
153 (59.843063354492): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294734714 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294734714 AND type='deeppockets_item' AND published='1' LIMIT 1
154 (46.014785766602): select distinct links.* from jos_textlinks links join jos_textlinks_placement placement on links.id=placement.link_id where journal_id=(10) and (channel_id=212 or channel_id is null)
155 (41.007995605469): select distinct links.* from jos_textlinks links join jos_textlinks_placement placement on links.id=placement.link_id where journal_id=(10) and (channel_id=212 or channel_id is null)
156 (50.067901611328): SELECT livesite FROM jos_dp_categories WHERE id=10 AND published='1' LIMIT 1
157 (92.983245849609): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND published='1' LIMIT 1
158 (66.041946411133): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294734714 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294734714 AND published='1' LIMIT 1
159 (59.843063354492): select jos_twitters.link from jos_twitters where cat=10
160 (44.822692871094): select jos_facebook.link from jos_facebook where cat=10
161 (41.007995605469): select jos_google_plus.link from jos_google_plus where cat=10
162 (38.14697265625): select jos_linkedin.link from jos_linkedin where cat=10
163 (409.12628173828): update jos_bannersmanager_banner set impmade=impmade+1 where id in(14615,14202,14203)
164 (!!!!! 1610.0406646729): insert into jos_banners_delta values (14615,'2025-06-27 09:20:45','216.73.216.249','view'),(14202,'2025-06-27 09:20:45','216.73.216.249','view'),(14203,'2025-06-27 09:20:45','216.73.216.249','view')