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New Algorithm Allows Real-Time Reconstruction of Images Combining Optical and MRI Data to Improve Breast Cancer Detection

By MedImaging International staff writers
Posted on 25 Feb 2022
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Image: Deep learning poised to improve breast cancer imaging (Photo courtesy of Unsplash)
Image: Deep learning poised to improve breast cancer imaging (Photo courtesy of Unsplash)

Researchers have developed a new image reconstruction approach that could contribute to better breast cancer detection.

The deep learning algorithm developed by a research team from Dartmouth College (Hanover, NH, USA) overcomes a major hurdle in multi-modality imaging by allowing images to be recovered in real time. The new algorithm, known as Z-Net, works with an imaging platform that combines optical spectral information with contrast-free magnetic resonance imaging (MRI) to improve detection of breast cancer. The new algorithm can distinguish between malignant and benign tumors using MRI-guided near infrared spectral tomography (NIRST) imaging data from patient breast exams.

Today, dynamic contrast-enhanced (DCE) MRI is recognized as the most sensitive breast cancer detection method. However, DCE MRI requires intravenous injection of a contrast agent and has a substantial false positive rate. Although non-contrast MRI-guided NIRST offers an alternative that doesn’t require contrast injection or ionizing radiation, reconstructing the combined images requires complicated light propagation models as well as time consuming MRI image analysis. The researchers used deep learning to make the image reconstruction process faster. Deep learning is a machine learning approach that creates connections among pieces of information in a way that is similar to how human brains operate, allowing the researchers to train their algorithm to recognize patterns and complex relationships.

After training the algorithm, the researchers used simulated data to confirm that the quality of the reconstructed images was not degraded by eliminating diffuse light propagation modeling or by not segmenting MRI images. They then applied the new algorithm prospectively to MRI-guided NIRST data collected from two breast imaging exams – one leading to a biopsy-confirmed cancer diagnosis, the other resulting in a benign abnormality. The new algorithm generated images that could tell the difference between the malignant and benign cases. The researchers are now working to adapt the new image reconstruction method to work with 3D data and plan to test it in a larger clinical trial in the near future.

“The near infrared spectral tomography (NIRST) and MRI imaging platform we developed has shown promise, but the time and effort involved in image reconstruction has prevented it from being translated into the day-to-day clinical workflow,” said Keith Paulsen, who led the research team. “Thus, we designed a deep-learning algorithm that incorporates anatomical image data from MRI to guide NIRST image formation without requiring complex modeling of light propagation in tissue.”

“Z-Net could allow NIRST to become an efficient and effective add-on to non-contrast MRI for breast cancer screening and diagnosis because it allows MRI-guided NIRST images to be recovered in nearly real time,” added Paulsen. “It can also be readily adapted for use with other cancers and diseases for which multi-modality imaging data are available.”

“The Z-Net algorithm reduces the time needed to generate a new image to a few seconds,” said Jinchao Feng, the study’s lead author. “Moreover, the machine learning network we developed can be trained with data generated by computer simulations rather than needing images from actual patient exams, which take a long time to collect and process into training information.”

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92 (27.179718017578): SELECT show_live FROM jos_com_show_setting LIMIT 1
93 (28.133392333984): SELECT show_live FROM jos_com_show_setting LIMIT 1
94 (35.04753112793): SELECT show_live FROM jos_com_show_setting LIMIT 1
95 (26.941299438477): SELECT show_live FROM jos_com_show_setting LIMIT 1
96 (26.941299438477): SELECT show_live FROM jos_com_show_setting LIMIT 1
97 (26.941299438477): SELECT show_live FROM jos_com_show_setting LIMIT 1
98 (27.894973754883): SELECT show_live FROM jos_com_show_setting LIMIT 1
99 (26.941299438477): SELECT show_live FROM jos_com_show_setting LIMIT 1
100 (26.941299438477): 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 (66.995620727539): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND published='1' LIMIT 1
105 (42.915344238281): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND published='1' LIMIT 1
106 (71.048736572266): 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=294791744 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
107 (506.87789916992): 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=294791744 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=294791744 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND published='1' LIMIT 1
109 (57.93571472168): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND published='1' LIMIT 1
110 (50.067901611328): 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=294791744 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
111 (499.01008605957): 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=294791744 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
112 (783.92028808594): 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 (391.96014404297): 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 (195.02639770508): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND published='1' LIMIT 1
115 (119.92454528809): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND published='1' LIMIT 1
116 (197.17216491699): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND published='1' LIMIT 1
117 (124.93133544922): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND published='1' LIMIT 1
118 (741.95861816406): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND published='1' LIMIT 1
119 (187.87384033203): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND published='1' LIMIT 1
120 (566.95938110352): SELECT * FROM trending_articles WHERE `journal_id` = 10 AND `timestamp` <= NOW() + INTERVAL 7 DAY ORDER BY `order`
121 (!!!!! 36309.003829956): 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
122 (420.80879211426): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND published='1' LIMIT 1
123 (127.79235839844): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND published='1' LIMIT 1
124 (!!!!! 6334.0663909912): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294791744 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294791744 AND type='deeppockets_item' AND published='1' LIMIT 1
125 (!!!!! 579987.04910278): ( 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 (100.13580322266): ( 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 (208.13941955566): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294800513 LIMIT 1
128 (36.954879760742): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294800513 LIMIT 1
129 (140.90538024902): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294800359 LIMIT 1
130 (56.028366088867): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294800359 LIMIT 1
131 (179.05235290527): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294800361 LIMIT 1
132 (247.00164794922): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294800361 LIMIT 1
133 (558.85314941406): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
134 (355.00526428223): SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
135 (288.96331787109): SELECT name FROM jos_deeppockets WHERE id=212
136 (729.08401489258): SELECT name FROM jos_deeppockets WHERE id=212
137 (560.99891662598): 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((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
138 (!!!!! 1672.9831695557): SELECT *, DATE_FORMAT(publish_up,'%d %b %Y') AS date_publish_up, DATE_FORMAT(publish_down,'%d %b %Y') AS date_publish_down FROM jos_events WHERE state=1 AND publish_up > NOW() and extra_info REGEXP '((;)|(^))212((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
139 (568.15147399902): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND published='1' LIMIT 1
140 (195.02639770508): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND published='1' LIMIT 1
141 (!!!!! 14368.057250977): TRUNCATE TABLE jos_trademed_module
142 (82.969665527344): 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=294791744 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
143 (56.028366088867): 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=294791744 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
144 (!!!!! 1261.9495391846): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
145 (157.11784362793): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
146 (663.04206848145): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND published='1' LIMIT 1
147 (48.87580871582): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND published='1' LIMIT 1
148 (!!!!! 3628.0155181885): 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
149 (993.01338195801): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND published='1' LIMIT 1
150 (398.87428283691): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND published='1' LIMIT 1
151 (101.08947753906): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294791744 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294791744 AND type='deeppockets_item' AND published='1' LIMIT 1
152 (70.095062255859): 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)
153 (180.00602722168): 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)
154 (143.05114746094): SELECT livesite FROM jos_dp_categories WHERE id=10 AND published='1' LIMIT 1
155 (!!!!! 3344.0589904785): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND published='1' LIMIT 1
156 (428.91502380371): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791744 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791744 AND published='1' LIMIT 1
157 (292.77801513672): select jos_twitters.link from jos_twitters where cat=10
158 (86.784362792969): select jos_facebook.link from jos_facebook where cat=10
159 (31.948089599609): select jos_google_plus.link from jos_google_plus where cat=10
160 (113.01040649414): select jos_linkedin.link from jos_linkedin where cat=10
161 (410.07995605469): update jos_bannersmanager_banner set impmade=impmade+1 where id in(14615,14202,14203)
162 (821.11358642578): insert into jos_banners_delta values (14615,'2025-05-01 08:18:27','18.188.0.144','view'),(14202,'2025-05-01 08:18:27','18.188.0.144','view'),(14203,'2025-05-01 08:18:27','18.188.0.144','view')