{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T22:36:02Z","timestamp":1777502162396,"version":"3.51.4"},"reference-count":12,"publisher":"SAGE Publications","issue":"7","license":[{"start":{"date-parts":[[2014,9,1]],"date-time":"2014-09-01T00:00:00Z","timestamp":1409529600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Acta Radiol"],"published-print":{"date-parts":[[2014,9]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Diffusion-weighted magnetic resonance imaging (DW-MRI) has been considered to be useful in diagnosing upper urinary tract (UUT) disease; however, the value of DW-MRI with different b values has not been reported.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To evaluate the performance of using conventional MRI alone and in combination with DWI with different b values in diagnosing UUT cancer.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Material and Methods<\/jats:title>\n                    <jats:p>\n                      Seventy patients with suspected UUT cancer underwent conventional MRI (T1-weighted and T2-weighted) and DW-MRI (b\u2009=\u2009500 and 1500\u2009s\/mm\n                      <jats:sup>2<\/jats:sup>\n                      ) on a 3\u2009T-MRI scanner. The ureteroscopic and histopathologic findings were compared with the imaging findings. The utility of detecting UUT cancer using conventional MRI (set A), combined DW-MRI (b\u2009=\u2009500\u2009s\/mm\n                      <jats:sup>2<\/jats:sup>\n                      ) and conventional MRI (set B), and combined DW-MRI (b\u2009=\u20091500\u2009s\/mm\n                      <jats:sup>2<\/jats:sup>\n                      ) and conventional MRI (set C) were independently evaluated by two readers.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>A total of 32 patients had verified cancer; 23 patients had benign UUT diseases, and 15 had no abnormality. Sets B and C had significantly improved diagnostic accuracy for UUT cancer compared with set A; the specificity in diagnosing UUT cancer was significantly improved when using set C compared with sets A and B. In patients without UUT obstructions, improved sensitivity and accuracy in diagnosis was achieved when using sets B and C compared with set A.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>\n                      Using DW-MRI in combination with conventional MRI provides increased diagnostic accuracy and sensitivity in patients without UUT obstruction. The combination of conventional MRI and DW-MRI with a higher b value (1500\u2009s\/mm\n                      <jats:sup>2<\/jats:sup>\n                      ) improved the specificity in diagnosing UUT cancer compared to conventional sequences and DW-MRI with a lower b value (500\u2009s\/mm\n                      <jats:sup>2<\/jats:sup>\n                      ).\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/0284185113506576","type":"journal-article","created":{"date-parts":[[2013,10,3]],"date-time":"2013-10-03T21:58:27Z","timestamp":1380837507000},"page":"882-889","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":13,"title":["Imaging of upper urinary tract cancer: using conventional MRI and diffusion-weighted MRI with different b values"],"prefix":"10.1177","volume":"55","author":[{"given":"Guang-yu","family":"Wu","sequence":"first","affiliation":[{"name":"Department of Radiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qing","family":"Lu","sequence":"additional","affiliation":[{"name":"Department of Radiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lian-ming","family":"Wu","sequence":"additional","affiliation":[{"name":"Department of Radiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"family":"WenKong","sequence":"additional","affiliation":[{"name":"Department of Urinary Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiao-xi","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Radiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jian-rong","family":"Xu","sequence":"additional","affiliation":[{"name":"Department of Radiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2014,9,1]]},"reference":[{"key":"bibr1-0284185113506576","doi-asserted-by":"publisher","DOI":"10.1007\/s00261-008-9418-2"},{"key":"bibr2-0284185113506576","doi-asserted-by":"publisher","DOI":"10.2214\/ajr.184.6.01841873"},{"key":"bibr3-0284185113506576","doi-asserted-by":"publisher","DOI":"10.2214\/AJR.10.4632"},{"key":"bibr4-0284185113506576","doi-asserted-by":"publisher","DOI":"10.1593\/neo.03349"},{"key":"bibr5-0284185113506576","first-page":"1830","volume":"21","author":"DeLano MC","year":"2000","journal-title":"Am J Neuroradiol"},{"key":"bibr6-0284185113506576","doi-asserted-by":"publisher","DOI":"10.1111\/j.1442-2042.2007.01950.x"},{"key":"bibr7-0284185113506576","doi-asserted-by":"publisher","DOI":"10.1002\/jmri.21508"},{"key":"bibr8-0284185113506576","doi-asserted-by":"publisher","DOI":"10.1148\/rg.287075154"},{"key":"bibr9-0284185113506576","doi-asserted-by":"publisher","DOI":"10.1007\/s00330-005-0078-0"},{"key":"bibr10-0284185113506576","doi-asserted-by":"publisher","DOI":"10.1593\/neo.81328"},{"key":"bibr11-0284185113506576","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejrad.2010.06.004"},{"key":"bibr12-0284185113506576","doi-asserted-by":"publisher","DOI":"10.3748\/wjg.v13.i6.858"}],"container-title":["Acta Radiologica"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/0284185113506576","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/0284185113506576","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/0284185113506576","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T15:18:11Z","timestamp":1777389491000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/0284185113506576"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2014,9]]},"references-count":12,"journal-issue":{"issue":"7","published-print":{"date-parts":[[2014,9]]}},"alternative-id":["10.1177\/0284185113506576"],"URL":"https:\/\/doi.org\/10.1177\/0284185113506576","relation":{},"ISSN":["0284-1851","1600-0455"],"issn-type":[{"value":"0284-1851","type":"print"},{"value":"1600-0455","type":"electronic"}],"subject":[],"published":{"date-parts":[[2014,9]]}}}