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Oxygen-Enhanced MRI Technology Allows Cancer Doctors to See Inside Tumors

By MedImaging International staff writers
Posted on 20 Mar 2023
Image: New scan measures tumor oxygen levels in real-time to help guide treatment (Photo courtesy of ICR)
Image: New scan measures tumor oxygen levels in real-time to help guide treatment (Photo courtesy of ICR)

Since the 1950s, researchers have been aware of the difficulty in effectively treating tumors deprived of oxygen, a problem that is further exacerbated when treating them with radiotherapy. In spite of this, patients are not routinely subjected to tests that evaluate tumor oxygen levels due to the absence of a single cost-effective, accurate, and readily available test. Now, imaging researchers have come closer to accomplishing their goal of identifying cancers that are deprived of oxygen, which would aid in tailoring effective, targeted treatments for these cancers.

A team of researchers from The University of Manchester (Manchester, UK) and The Institute of Cancer Research (ICR, London, UK) achieved this breakthrough by combining two cutting-edge technologies: an MRI scanner that also delivers radiotherapy - called MR-Linac - to measure the oxygen levels in tumors.

In a study involving 11 head and neck cancer patients, researchers successfully performed scans using the MR-Linac machine and subsequently generated maps of oxygen levels - a first in this field. It is important to note that this technology has the potential to be applicable to most types of cancer. During the process, patients inhaled room air through a mask, followed by pure oxygen to bathe the tumor with the gas. Oxygen-enhanced MRI, as the technique is called, was able to distinguish between tumor portions with different oxygen levels; areas with good oxygenation showed varied responses compared to those that were oxygen-depleted, thereby helping to identify the sections of the tumor that were starved of oxygen and may be resistant to radiotherapy.

“This imaging lets us see inside tumors and helps us understand why some people with cancer need an extra boost to get effective treatment. This is an important step towards the goal of changing treatment based on imaging biology,” said lead author Professor James O’Connor, Professor of Quantitative Biomedical Imaging at The Institute of Cancer Research.

“The MR-Linac is an exciting technology that combines highly precise imaging and radiotherapy delivery that allows for real-time imaging,” added first author Dr. Michael Dubec from The University of Manchester. “We are tremendously excited about what is the first application in humans of 'oxygen-enhanced MRI', developed as a result of a multi-disciplinary team working across the country which has exciting implications on patient outcomes.”

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95 (26.941299438477): SELECT show_live FROM jos_com_show_setting LIMIT 1
96 (28.133392333984): SELECT show_live FROM jos_com_show_setting LIMIT 1
97 (27.894973754883): 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 (29.087066650391): SELECT show_live FROM jos_com_show_setting LIMIT 1
101 (28.133392333984): SELECT show_live FROM jos_com_show_setting LIMIT 1
102 (28.848648071289): SELECT show_live FROM jos_com_show_setting LIMIT 1
103 (27.894973754883): SELECT show_live FROM jos_com_show_setting LIMIT 1
104 (27.894973754883): SELECT show_live FROM jos_com_show_setting LIMIT 1
105 (28.133392333984): SELECT show_live FROM jos_com_show_setting LIMIT 1
106 (28.133392333984): SELECT show_live FROM jos_com_show_setting LIMIT 1
107 (107.0499420166): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND published='1' LIMIT 1
108 (50.067901611328): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND published='1' LIMIT 1
109 (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=294796577 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
110 (!!!!! 3245.8305358887): 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=294796577 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
111 (!!!!! 1851.0818481445): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND published='1' LIMIT 1
112 (64.849853515625): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND published='1' LIMIT 1
113 (84.877014160156): 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=294796577 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
114 (536.20338439941): 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=294796577 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
115 (895.02334594727): 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
116 (527.85873413086): 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
117 (!!!!! 1420.9747314453): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND published='1' LIMIT 1
118 (!!!!! 2691.9841766357): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND published='1' LIMIT 1
119 (611.0668182373): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND published='1' LIMIT 1
120 (62.942504882812): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND published='1' LIMIT 1
121 (758.17108154297): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND published='1' LIMIT 1
122 (266.79039001465): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND published='1' LIMIT 1
123 (324.96452331543): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND published='1' LIMIT 1
124 (50.067901611328): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND published='1' LIMIT 1
125 (614.88151550293): SELECT * FROM trending_articles WHERE `journal_id` = 10 AND `timestamp` <= NOW() + INTERVAL 7 DAY ORDER BY `order`
126 (!!!!! 47742.84362793): 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
127 (!!!!! 3298.9978790283): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294796577 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294796577 AND type='deeppockets_item' AND published='1' LIMIT 1
128 (!!!!! 16682.863235474): ( 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
129 (58.889389038086): ( 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
130 (41.961669921875): 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
131 (31.948089599609): 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
132 (40.054321289062): 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
133 (31.948089599609): 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
134 (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
135 (51.975250244141): 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
136 (43.153762817383): 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
137 (31.948089599609): 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
138 (755.07164001465): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
139 (581.02607727051): SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
140 (185.96649169922): SELECT name FROM jos_deeppockets WHERE id=212
141 (79.870223999023): SELECT name FROM jos_deeppockets WHERE id=212
142 (994.92073059082): 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((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
143 (506.16264343262): SELECT *, DATE_FORMAT(publish_up,'%d %b %Y') AS date_publish_up, DATE_FORMAT(publish_down,'%d %b %Y') AS date_publish_down FROM jos_events WHERE state=1 AND publish_up > NOW() and extra_info REGEXP '((;)|(^))212((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
144 (128.03077697754): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND published='1' LIMIT 1
145 (112.05673217773): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND published='1' LIMIT 1
146 (!!!!! 17960.071563721): TRUNCATE TABLE jos_trademed_module
147 (!!!!! 1271.9631195068): 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=294796577 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
148 (883.81767272949): 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=294796577 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
149 (987.05291748047): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
150 (97.990036010742): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
151 (779.15191650391): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND published='1' LIMIT 1
152 (82.015991210938): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND published='1' LIMIT 1
153 (!!!!! 1610.0406646729): 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
154 (83.92333984375): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND published='1' LIMIT 1
155 (61.988830566406): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND published='1' LIMIT 1
156 (525.95138549805): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294796577 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294796577 AND type='deeppockets_item' AND published='1' LIMIT 1
157 (54.836273193359): 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)
158 (44.107437133789): 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)
159 (48.87580871582): SELECT livesite FROM jos_dp_categories WHERE id=10 AND published='1' LIMIT 1
160 (69.141387939453): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND published='1' LIMIT 1
161 (43.869018554688): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294796577 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294796577 AND published='1' LIMIT 1
162 (349.99847412109): select jos_twitters.link from jos_twitters where cat=10
163 (69.856643676758): select jos_facebook.link from jos_facebook where cat=10
164 (95.129013061523): select jos_google_plus.link from jos_google_plus where cat=10
165 (66.041946411133): select jos_linkedin.link from jos_linkedin where cat=10
166 (!!!!! 1420.0210571289): update jos_bannersmanager_banner set impmade=impmade+1 where id in(14615,14202,14203)
167 (!!!!! 1098.8712310791): insert into jos_banners_delta values (14615,'2025-08-03 22:54:51','216.73.216.210','view'),(14202,'2025-08-03 22:54:51','216.73.216.210','view'),(14203,'2025-08-03 22:54:51','216.73.216.210','view')