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X-Ray Images Made Clearer by New Technology

By MedImaging staff writers
Posted on 05 Feb 2008
Researchers have developed an innovative method for producing dark-field X-ray images at wavelengths used in conventional medical and industrial imaging equipment. More...


Dark-field images provide more detail than ordinary X-ray radiographs and could be used to diagnose the onset of osteoporosis, breast cancer, or Alzheimer's disease; to identify explosives in hand luggage; or to pinpoint hairline cracks or corrosion in functional structures; according to the researchers who developed the technique, from Paul Scherrer Institute (PSI; Villigen PSI, Switzerland) and the Ecole Polytechnique Federale de Lausanne (EPFL; Switzerland).

Up to now, dark-field X-ray imaging required sophisticated optics and could only be produced at facilities such the PSI's 300 m-diameter, US$200 million synchrotron. With the new nanostructured gratings described in this research, published online January 20, 2008, in the journal Nature Materials, dark-field images could soon be produced using ordinary X-ray equipment already in place in hospitals and airports around the world.

Unlike conventional X-ray images, which show a simple absorption contrast, dark-field images capture the scattering of the radiation within the material itself, exposing slight inner changes in bone, soft tissue, or alloys. The overall clarity of the images is striking. The improved sensitivity in measuring bone density and hairline fractures could help diagnose the onset of osteoporosis. Because cancer or plaque cells scatter radiation slightly differently than normal cells, dark-field X-ray images can also be used to examine soft tissue, providing safer early diagnosis of breast cancer or the plaques associated with Alzheimer's disease.

Security screening equipment equipped with dark-field image capability could better identify explosives, whose microcrystalline structures strongly scatter X-ray radiation. In addition, because X-rays penetrate a material without damaging it, dark-field images could help reveal scattering-producing micro-cracks and corrosion in structures such as airplane wings or the hulls of boats.

"Researchers have been working on dark-field X-ray images for many years,” explained Dr. Franz Pfeiffer, a professor at EPFL and researcher at the PSI. "Up until now these images have only been possible using sophisticated crystal optical elements.” Crystal optics, however, only work for a single X-ray wavelength, and therefore, are highly inefficient. "Our new technique uses novel X-ray optical components, in the form of nanostructured gratings, that permit the use of a broad energy spectrum, including the standard range of energies in traditional X-ray equipment used in hospitals or airports, added Dr. Christian David, Dr. Pfeiffer's colleague at PSI. "This opens up the possibility for adapting current imaging equipment to include dark-field imaging.”

Dr. Pfeiffer plans to collaborate with the Center for Biomedical Imaging (CIBM; Geneva, Switzerland), a joint center with the Universities of Lausanne and Geneva (Switzerland) and their associated hospitals, to develop an adaptation for existing medical equipment. "When combined with the phase contrast imaging technique that we developed in 2006, we now have the possibility of providing the same range of imaging techniques in broad-spectrum X-ray imaging that we do with visible light.”


Related Links:
Paul Scherrer Institute
Ecole Polytechnique Federale de Lausanne

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86 (46.968460083008): SELECT show_live FROM jos_com_show_setting LIMIT 1
87 (30.994415283203): SELECT show_live FROM jos_com_show_setting LIMIT 1
88 (51.021575927734): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=270240000 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
89 (30.040740966797): SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=270240000 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
90 (40.054321289062): SELECT id,name,title FROM jos_deeppockets WHERE cat=10 AND TYPE='file_folder' AND published=1 AND id != 294743300 AND id != 294743301 AND id != 294743302 AND id != 294743303 AND id != 294743304 AND id != 294743305 AND id != 294743306 AND id != 294743307 AND id != 294743308 AND id != 294743309 AND id != 294743310 AND metakey != 'aacc' ORDER BY `ordering`
91 (58.889389038086): SELECT show_live FROM jos_com_show_setting LIMIT 1
92 (33.855438232422): SELECT show_live FROM jos_com_show_setting LIMIT 1
93 (29.087066650391): SELECT show_live FROM jos_com_show_setting LIMIT 1
94 (28.848648071289): SELECT show_live FROM jos_com_show_setting LIMIT 1
95 (34.093856811523): SELECT show_live FROM jos_com_show_setting LIMIT 1
96 (28.848648071289): SELECT show_live FROM jos_com_show_setting LIMIT 1
97 (27.894973754883): SELECT show_live FROM jos_com_show_setting LIMIT 1
98 (29.802322387695): SELECT show_live FROM jos_com_show_setting LIMIT 1
99 (29.087066650391): SELECT show_live FROM jos_com_show_setting LIMIT 1
100 (28.848648071289): SELECT show_live FROM jos_com_show_setting LIMIT 1
101 (29.087066650391): SELECT show_live FROM jos_com_show_setting LIMIT 1
102 (29.087066650391): SELECT show_live FROM jos_com_show_setting LIMIT 1
103 (28.848648071289): SELECT show_live FROM jos_com_show_setting LIMIT 1
104 (30.040740966797): SELECT show_live FROM jos_com_show_setting LIMIT 1
105 (71.048736572266): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND published='1' LIMIT 1
106 (44.107437133789): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND published='1' LIMIT 1
107 (64.13459777832): 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=270240000 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
108 (51.021575927734): 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=270240000 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
109 (78.201293945312): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND published='1' LIMIT 1
110 (60.081481933594): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND published='1' LIMIT 1
111 (51.021575927734): 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=270240000 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
112 (558.13789367676): 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=270240000 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
113 (758.88633728027): 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 (540.97175598145): 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
115 (171.18453979492): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND published='1' LIMIT 1
116 (77.009201049805): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND published='1' LIMIT 1
117 (84.161758422852): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND published='1' LIMIT 1
118 (62.942504882812): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND published='1' LIMIT 1
119 (56.028366088867): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND published='1' LIMIT 1
120 (55.074691772461): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND published='1' LIMIT 1
121 (76.055526733398): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND published='1' LIMIT 1
122 (56.028366088867): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND published='1' LIMIT 1
123 (394.10591125488): SELECT * FROM trending_articles WHERE `journal_id` = 10 AND `timestamp` <= NOW() + INTERVAL 7 DAY ORDER BY `order`
124 (!!!!! 22912.02545166): 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
125 (596.04644775391): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=270240000 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=270240000 AND type='deeppockets_item' AND published='1' LIMIT 1
126 (!!!!! 7647.0375061035): ( 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 (119.92454528809): ( 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
128 (60.796737670898): 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 (33.140182495117): 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
130 (52.928924560547): 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 (30.040740966797): 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
132 (293.01643371582): 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 (35.04753112793): 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
134 (30.994415283203): 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 (27.894973754883): 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
136 (458.95576477051): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
137 (316.14303588867): SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
138 (37.908554077148): SELECT name FROM jos_deeppockets WHERE id=211
139 (33.140182495117): SELECT name FROM jos_deeppockets WHERE id=211
140 (537.15705871582): 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 '((;)|(^))211((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
141 (476.83715820312): SELECT *, DATE_FORMAT(publish_up,'%d %b %Y') AS date_publish_up, DATE_FORMAT(publish_down,'%d %b %Y') AS date_publish_down FROM jos_events WHERE state=1 AND publish_up > NOW() and extra_info REGEXP '((;)|(^))211((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
142 (66.995620727539): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND published='1' LIMIT 1
143 (50.067901611328): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND published='1' LIMIT 1
144 (!!!!! 8620.9774017334): TRUNCATE TABLE jos_trademed_module
145 (143.05114746094): 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=270240000 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
146 (83.92333984375): 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=270240000 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
147 (627.99453735352): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
148 (71.048736572266): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
149 (89.883804321289): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND published='1' LIMIT 1
150 (65.088272094727): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND published='1' LIMIT 1
151 (!!!!! 1355.8864593506): 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
152 (60.081481933594): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND published='1' LIMIT 1
153 (45.061111450195): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND published='1' LIMIT 1
154 (65.088272094727): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=270240000 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=270240000 AND type='deeppockets_item' AND published='1' LIMIT 1
155 (46.968460083008): 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=211 or channel_id is null)
156 (45.061111450195): 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=211 or channel_id is null)
157 (54.836273193359): SELECT livesite FROM jos_dp_categories WHERE id=10 AND published='1' LIMIT 1
158 (67.949295043945): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND published='1' LIMIT 1
159 (44.822692871094): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=270240000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=270240000 AND published='1' LIMIT 1
160 (50.067901611328): select jos_twitters.link from jos_twitters where cat=10
161 (30.994415283203): select jos_facebook.link from jos_facebook where cat=10
162 (30.040740966797): select jos_google_plus.link from jos_google_plus where cat=10
163 (29.087066650391): select jos_linkedin.link from jos_linkedin where cat=10
164 (316.14303588867): update jos_bannersmanager_banner set impmade=impmade+1 where id in(14615,14202,14203)
165 (!!!!! 1076.9367218018): insert into jos_banners_delta values (14615,'2025-08-25 01:45:40','216.73.216.171','view'),(14202,'2025-08-25 01:45:40','216.73.216.171','view'),(14203,'2025-08-25 01:45:40','216.73.216.171','view')