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Ultrasonic Screening May Provide More Effective Breast Cancer Detection

By MedImaging International staff writers
Posted on 21 Mar 2012
Scientists have successfully completed an initial trial of a new, potentially more effective, technique for screening breast cancer using ultrasound.

The team, from the National Physical Laboratory (NPL; Teddington, Middlesex, UK), the UK’s National Measurement Institute, working with the University Hospitals Bristol NHS [National Health Service] Foundation Trust, are now looking to develop the technique into a clinical device.

Annually, 46,000 women are diagnosed with breast cancer in the United Kingdom, cutting-edge breast screening methods, based on X-ray mammography. Only approximately 30% of suspicious lesions turn out to be malignant. Each lesion must be confirmed by invasive biopsies, estimated to cost the NHS GBP 35 million per year. Ionizing radiation also has the potential to cause cancer, which limits the use of X-rays to single screenings of at risk groups, such as women over 50 through the National Breast Screening Program.

There is a compelling need to develop improved, ideally nonionizing, methods of detecting breast lesions and solid masses. Improved diagnosis would reduce unnecessary biopsies and consequent patient trauma from being wrongly diagnosed.

Ultrasound fulfills many of the requirements it is safe, low cost, and already extensively used in applications such as fetal scanning. However, the quality of the images is not yet good enough for reliable diagnoses. Part of the difficulty lies with the current detectors used. Different biologic tissues have different sound speeds, and this affects the time taken for sound waves to arrive at the detector. This can distort the arriving waves, in extreme cases causing cancellation them to cancel each other out. This results in imaging errors, such as suggesting abnormal inclusions where there may be none.

The new method works by detecting the intensity of ultrasonic waves. Intensity is converted to heat that is then sensed by a thin membrane of pyroelectric film, which generates a voltage output dependent on the temperature rise. Imaging detectors based on this new principle should be much less susceptible to the effects caused by the uneven sound speed in tissues.

This technique, when used in a computed tomography (CT) configuration, should produce more accurate images of tissue properties and so provide better identification of breast tissue abnormalities. The goal of CT imaging is to generate a cross-section map of the tissue, which defines how the acoustic characteristics vary across the tissue. Using this map, it is possible to identify abnormal inclusions.

An initial feasibility project has proved the theory by testing single detectors using purpose-built artifacts. These artifacts were designed to include well-defined structures, enabling the new imaging technique to be compared with more conventional techniques. The findings validated that the new detectors generated more effective maps of the internal structure of the artifacts than existing techniques.

Having received positive findings and validated the potential of the project, NPL is now seeking funding to develop the work further. They hope to produce a demonstrator using a full array of 20 sensors, which should allow more rapid scanning and move the concept towards a system, which might eventually be used clinically. It is hoped that this will provide both a suitable resolution and fast enough scanning to become a viable replacement for current clinical scanners. Following successful completion of the demonstrator, NPL and partners will look to work with a manufacturer to commercialize the technology.

Dr. Bajram Zeqiri, who leads the project at the National Physical Laboratory, said, “Our initial results are very promising. […] we’re very excited about its potential and with the right funding, support, and industry partners, we may well have something here which could have a huge and positive impact on cancer diagnosis and the lives of many thousands of women.”

Related Links:
UK National Physical Laboratory


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90 (71.048736572266): SELECT show_live FROM jos_com_show_setting LIMIT 1
91 (41.007995605469): SELECT show_live FROM jos_com_show_setting LIMIT 1
92 (38.862228393555): SELECT show_live FROM jos_com_show_setting LIMIT 1
93 (37.908554077148): SELECT show_live FROM jos_com_show_setting LIMIT 1
94 (38.862228393555): SELECT show_live FROM jos_com_show_setting LIMIT 1
95 (36.954879760742): SELECT show_live FROM jos_com_show_setting LIMIT 1
96 (40.054321289062): SELECT show_live FROM jos_com_show_setting LIMIT 1
97 (30.994415283203): SELECT show_live FROM jos_com_show_setting LIMIT 1
98 (30.040740966797): SELECT show_live FROM jos_com_show_setting LIMIT 1
99 (30.040740966797): SELECT show_live FROM jos_com_show_setting LIMIT 1
100 (35.04753112793): SELECT show_live FROM jos_com_show_setting LIMIT 1
101 (31.948089599609): SELECT show_live FROM jos_com_show_setting LIMIT 1
102 (30.040740966797): SELECT show_live FROM jos_com_show_setting LIMIT 1
103 (36.954879760742): SELECT show_live FROM jos_com_show_setting LIMIT 1
104 (125.88500976562): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND published='1' LIMIT 1
105 (65.088272094727): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND published='1' LIMIT 1
106 (85.830688476562): 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=294739897 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
107 (98.943710327148): 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=294739897 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
108 (87.02278137207): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND published='1' LIMIT 1
109 (66.995620727539): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND published='1' LIMIT 1
110 (55.074691772461): 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=294739897 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
111 (628.94821166992): 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=294739897 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
112 (859.97581481934): 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 (533.10394287109): 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 (157.11784362793): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND published='1' LIMIT 1
115 (82.015991210938): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND published='1' LIMIT 1
116 (66.995620727539): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND published='1' LIMIT 1
117 (56.028366088867): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND published='1' LIMIT 1
118 (73.909759521484): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND published='1' LIMIT 1
119 (50.067901611328): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND published='1' LIMIT 1
120 (66.041946411133): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND published='1' LIMIT 1
121 (52.928924560547): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND published='1' LIMIT 1
122 (413.89465332031): SELECT * FROM trending_articles WHERE `journal_id` = 10 AND `timestamp` <= NOW() + INTERVAL 7 DAY ORDER BY `order`
123 (!!!!! 29127.836227417): 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 (756.97898864746): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294739897 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294739897 AND type='deeppockets_item' AND published='1' LIMIT 1
125 (!!!!! 11257.886886597): ( 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 (104.90417480469): ( 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 (53.882598876953): 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 (39.100646972656): 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 (59.127807617188): 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 (37.908554077148): 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 (389.09912109375): 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 (133.03756713867): 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 (44.822692871094): 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 (40.054321289062): 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 (426.05400085449): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
136 (376.93977355957): SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
137 (198.1258392334): SELECT name FROM jos_deeppockets WHERE id=214
138 (111.81831359863): SELECT name FROM jos_deeppockets WHERE id=214
139 (628.94821166992): 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 '((;)|(^))214((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
140 (528.09715270996): SELECT *, DATE_FORMAT(publish_up,'%d %b %Y') AS date_publish_up, DATE_FORMAT(publish_down,'%d %b %Y') AS date_publish_down FROM jos_events WHERE state=1 AND publish_up > NOW() and extra_info REGEXP '((;)|(^))214((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
141 (65.088272094727): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND published='1' LIMIT 1
142 (50.067901611328): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND published='1' LIMIT 1
143 (!!!!! 8485.0788116455): TRUNCATE TABLE jos_trademed_module
144 (667.09518432617): 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=294739897 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
145 (!!!!! 1677.9899597168): 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=294739897 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
146 (319.00405883789): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
147 (118.97087097168): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
148 (61.988830566406): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND published='1' LIMIT 1
149 (42.915344238281): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND published='1' LIMIT 1
150 (!!!!! 1377.8209686279): 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 (102.04315185547): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND published='1' LIMIT 1
152 (64.849853515625): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND published='1' LIMIT 1
153 (58.889389038086): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294739897 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294739897 AND type='deeppockets_item' AND published='1' LIMIT 1
154 (42.915344238281): 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=214 or channel_id is null)
155 (34.093856811523): 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=214 or channel_id is null)
156 (53.167343139648): SELECT livesite FROM jos_dp_categories WHERE id=10 AND published='1' LIMIT 1
157 (98.228454589844): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND published='1' LIMIT 1
158 (66.041946411133): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294739897 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294739897 AND published='1' LIMIT 1
159 (468.96934509277): select jos_twitters.link from jos_twitters where cat=10
160 (82.969665527344): select jos_facebook.link from jos_facebook where cat=10
161 (294.92378234863): select jos_google_plus.link from jos_google_plus where cat=10
162 (444.88906860352): select jos_linkedin.link from jos_linkedin where cat=10