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Low Field 0.55T MRI Images Offer Similar Diagnostic Utility as 1.5T for Abdominal Scans

By MedImaging International staff writers
Posted on 15 Feb 2024

Magnetic resonance imaging (MRI) is a vital tool in medical diagnostics, but the high cost of whole-body clinical systems is a significant barrier. Recent advancements in MRI technology, including hardware, software, and coil technology, have rekindled interest in MRI systems having lower main magnetic field strengths compared to modern, higher-field commercial scanners. Now, a new study has demonstrated that MRI scanners with lower field strengths, specifically 0.55T, can produce high-quality abdominal images without losing diagnostic accuracy. However, these lower field strength systems may require longer imaging times and additional sequence optimization compared to higher field strength systems.

In the study, researchers from the University of Michigan (Ann Arbor, MI, USA) conducted a comparative analysis of abdominal MRI images from a 0.55T scanner against those from conventional 1.5T/3T units. The study involved 67 participants, with 15 healthy individuals and 52 patients undergoing MRIs for existing medical issues. Each participant underwent a scan using the 0.55T machine. Additionally, the healthy group also had a second scan on a 1.5T unit for further image comparison. Of the 52 patients, 28 had pre-existing abdominal MRI images taken with either 1.5T or 3T scanners, which were used for a quality comparison across different magnetic field strengths.

Two board-certified radiologists reviewed all images for their diagnostic and clinical value. For the healthy cohort, both radiologists successfully used the 0.55T images for assessment. In the patient group, while one radiologist could diagnose all 52 patients using the 0.55T images, the other required higher resolution scans for 6 of these patients. Notably, the researchers observed longer scan durations for abdominal imaging at 0.55T and acknowledged the need for optimizing certain sequences to minimize artifacts.

The study's findings suggest that 0.55T MRI scanners can be sufficient for acquiring diagnostic-quality images in most cases. The researchers advocate for further research to validate these findings, as the efficacy of 0.55T images could broaden the application of lower field MRI units, enhancing patient access to imaging in regions where higher field strength scanners are not readily available.

“Despite challenges such as lower SNR, reduced spatial resolution, and longer scan times, commercially available 0.55T systems may be useful for many common abdominal MRI indications that do not require high-resolution imaging,” the researchers stated.

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86 (35.04753112793): SELECT show_live FROM jos_com_show_setting LIMIT 1

87 (56.982040405273): SELECT show_live FROM jos_com_show_setting LIMIT 1

88 (37.193298339844): SELECT show_live FROM jos_com_show_setting LIMIT 1

89 (36.001205444336): SELECT show_live FROM jos_com_show_setting LIMIT 1

90 (35.04753112793): SELECT show_live FROM jos_com_show_setting LIMIT 1

91 (92.983245849609): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294800279 AND published='1' LIMIT 1

92 (60.081481933594): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294800279 AND published='1' LIMIT 1

93 (73.909759521484): 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=294800279 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1

94 (96.08268737793): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294800279 AND published='1' LIMIT 1

95 (65.803527832031): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294800279 AND published='1' LIMIT 1

96 (614.88151550293): 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=294800279 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1

97 (614.16625976562): 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

98 (395.05958557129): 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

99 (109.91096496582): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294800279 AND published='1' LIMIT 1

100 (46.014785766602): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294800279 AND published='1' LIMIT 1

101 (63.896179199219): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294800279 AND published='1' LIMIT 1

102 (41.961669921875): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294800279 AND published='1' LIMIT 1

103 (41.961669921875): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294800279 AND published='1' LIMIT 1

104 (44.107437133789): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294800279 AND published='1' LIMIT 1

105 (360.01205444336): SELECT * FROM trending_articles WHERE `journal_id` = 10 AND `timestamp` <= NOW() + INTERVAL 7 DAY ORDER BY `order`

106 (!!!!! 21875.143051147): 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

107 (118.01719665527): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294800279 AND published='1' LIMIT 1

108 (56.982040405273): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294800279 AND published='1' LIMIT 1

109 (528.09715270996): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294800279 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294800279 AND type='deeppockets_item' AND published='1' LIMIT 1

110 (!!!!! 419578.07540894): ( 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

111 (83.92333984375): ( 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

112 (324.96452331543): 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

113 (136.13700866699): 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

114 (245.09429931641): 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

115 (91.075897216797): 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

116 (248.90899658203): 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

117 (56.028366088867): 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

118 (285.86387634277): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1

119 (100.13580322266): SELECT name FROM jos_deeppockets WHERE id=212

120 (30.994415283203): SELECT name FROM jos_deeppockets WHERE id=212

121 (417.94776916504): 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

122 (353.09791564941): 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

123 (55.074691772461): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294800279 AND published='1' LIMIT 1

124 (41.961669921875): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294800279 AND published='1' LIMIT 1

125 (!!!!! 8536.1003875732): TRUNCATE TABLE jos_trademed_module

126 (89.168548583984): 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=294800279 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1

127 (854.0153503418): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1

128 (57.93571472168): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1

129 (65.088272094727): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294800279 AND published='1' LIMIT 1

130 (41.961669921875): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294800279 AND published='1' LIMIT 1

131 (!!!!! 1105.0701141357): 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

132 (51.975250244141): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294800279 AND published='1' LIMIT 1

133 (41.007995605469): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294800279 AND published='1' LIMIT 1

134 (40.054321289062): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294800279 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294800279 AND type='deeppockets_item' AND published='1' LIMIT 1

135 (29.802322387695): 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)

136 (26.941299438477): 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)

137 (30.994415283203): SELECT livesite FROM jos_dp_categories WHERE id=10 AND published='1' LIMIT 1

138 (61.988830566406): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294800279 AND published='1' LIMIT 1

139 (40.054321289062): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294800279 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294800279 AND published='1' LIMIT 1

140 (108.95729064941): select jos_twitters.link from jos_twitters where cat=10

141 (29.087066650391): select jos_facebook.link from jos_facebook where cat=10

142 (26.941299438477): select jos_google_plus.link from jos_google_plus where cat=10

143 (25.98762512207): select jos_linkedin.link from jos_linkedin where cat=10

144 (323.05717468262): update jos_bannersmanager_banner set impmade=impmade+1 where id in(14615,14202,14203)

145 (!!!!! 2475.0232696533): insert into jos_banners_delta values (14615,'2025-04-29 17:10:32','18.222.153.166','view'),(14202,'2025-04-29 17:10:32','18.222.153.166','view'),(14203,'2025-04-29 17:10:32','18.222.153.166','view')

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