{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,29]],"date-time":"2026-08-29T07:14:59Z","timestamp":1787987699391,"version":"build-2784847793"},"reference-count":19,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2008,10,28]],"date-time":"2008-10-28T00:00:00Z","timestamp":1225152000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Magnetic Resonance Imaging"],"published-print":{"date-parts":[[2008,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>To determine the feasibility of time\u2010resolved dynamic contrast\u2010enhanced magnetic resonance urography (MRU) for the evaluation of ureteral peristalsis using a data\u2010sharing 3D gradient echo sequence with spiral k\u2010space filling.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>Eight patients (M = 3, F = 5, mean 48.1 years) were referred for MRU for the evaluation for renal mass (<jats:italic>n<\/jats:italic> = 3), hematuria (<jats:italic>n<\/jats:italic> = 2), urinary tract tuberculosis (<jats:italic>n<\/jats:italic> = 1), postoperative bladder cancer (<jats:italic>n<\/jats:italic> = 1), and postoperative ureteric reimplantation (<jats:italic>n<\/jats:italic> = 1). Dynamic MRU was performed for 120 seconds at 1.5T after intravenous furosemide and gadolinium administration using an oblique sagittal, time\u2010resolved T1 3D gradient echo sequence with 1 second effective temporal resolution. Study quality was assessed based on artifacts and extent of ureteric visualization. Frequency of peristalsis from the renal pelvis to urinary bladder was evaluated for each subject.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 16 ureters were examined. Image quality was good in four ureters, satisfactory in 11 ureters, and poor in one ureter. Mean peristaltic frequency was 3.5 waves per minute (range, 2.5\u20136.5 waves\/minute) in normal ureters (<jats:italic>n<\/jats:italic> =11). Five ureters were considered abnormal (one urinary tract tuberculosis and four postsurgical ureters), and all had decreased or no peristalsis (0\u20131.5 waves per minute).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>MRU using a time\u2010resolved, data\u2010sharing 3D contrast\u2010enhanced technique is able to demonstrate ureteral peristalsis and permits quantification of ureteral peristaltic frequency. J. Magn. Reson. Imaging 2008;28:1293\u20131298. \u00a9 2008 Wiley\u2010Liss, Inc.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jmri.21567","type":"journal-article","created":{"date-parts":[[2008,10,28]],"date-time":"2008-10-28T14:35:56Z","timestamp":1225204556000},"page":"1293-1298","source":"Crossref","is-referenced-by-count":16,"title":["Time\u2010resolved dynamic contrast\u2010enhanced MR urography for the evaluation of ureteral peristalsis: Initial experience"],"prefix":"10.1002","volume":"28","author":[{"given":"Sooah","family":"Kim","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jason S.","family":"Jacob","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Danny C.","family":"Kim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rafael","family":"Rivera","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ruth P.","family":"Lim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vivian S.","family":"Lee","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2008,10,28]]},"reference":[{"key":"e_1_2_5_2_2","doi-asserted-by":"publisher","DOI":"10.1159\/000413811"},{"key":"e_1_2_5_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-5347(17)36145-1"},{"key":"e_1_2_5_4_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1464-410X.1989.tb05151.x"},{"key":"e_1_2_5_5_2","doi-asserted-by":"publisher","DOI":"10.1097\/00006231-199105000-00003"},{"key":"e_1_2_5_6_2","first-page":"223","article-title":"Scintigraphic study of ureteral peristalsis using fast Fourier transforms","volume":"37","author":"Ropolo R","year":"1993","journal-title":"J Nucl Biol Med"},{"key":"e_1_2_5_7_2","doi-asserted-by":"crossref","first-page":"1413","DOI":"10.1152\/ajplegacy.1974.226.6.1413","article-title":"Renal pelvic pacemaker control of ureteral peristaltic rate","volume":"226","author":"Constantinou CE","year":"1974","journal-title":"Am J Physiol"},{"key":"e_1_2_5_8_2","doi-asserted-by":"publisher","DOI":"10.1148\/84.5.886"},{"key":"e_1_2_5_9_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-5347(17)61808-1"},{"key":"e_1_2_5_10_2","first-page":"99","article-title":"Transport efficiency of ureteral peristalsis correlated to pacemaker activity of renal pelvis","volume":"16","author":"Yamaguchi O","year":"1978","journal-title":"Invest Urol"},{"key":"e_1_2_5_11_2","doi-asserted-by":"publisher","DOI":"10.1089\/end.2006.0161"},{"key":"e_1_2_5_12_2","doi-asserted-by":"publisher","DOI":"10.1148\/radiol.2422051111"},{"key":"e_1_2_5_13_2","doi-asserted-by":"publisher","DOI":"10.1002\/jmri.20494"},{"key":"e_1_2_5_14_2","doi-asserted-by":"publisher","DOI":"10.1002\/1522-2586(200008)12:2<343::AID-JMRI18>3.0.CO;2-M"},{"key":"e_1_2_5_15_2","doi-asserted-by":"publisher","DOI":"10.2214\/ajr.180.5.1801305"},{"key":"e_1_2_5_16_2","doi-asserted-by":"publisher","DOI":"10.1136\/gut.2003.038588"},{"key":"e_1_2_5_17_2","doi-asserted-by":"publisher","DOI":"10.1148\/radiol.2331031117"},{"key":"e_1_2_5_18_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1464-410X.2005.05578.x"},{"key":"e_1_2_5_19_2","first-page":"212","article-title":"Utility of cine MR urography of the urinary tract and comparison with static MR urography","volume":"22","author":"Tsubota M","year":"2004","journal-title":"Radiat Med"},{"key":"e_1_2_5_20_2","doi-asserted-by":"publisher","DOI":"10.1056\/NEJMra072149"}],"container-title":["Journal of Magnetic Resonance Imaging"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fjmri.21567","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jmri.21567","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,16]],"date-time":"2023-10-16T23:37:02Z","timestamp":1697499422000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/jmri.21567"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2008,10,28]]},"references-count":19,"journal-issue":{"issue":"5","published-print":{"date-parts":[[2008,11]]}},"alternative-id":["10.1002\/jmri.21567"],"URL":"https:\/\/doi.org\/10.1002\/jmri.21567","archive":["Portico"],"relation":{},"ISSN":["1053-1807","1522-2586"],"issn-type":[{"value":"1053-1807","type":"print"},{"value":"1522-2586","type":"electronic"}],"subject":[],"published":{"date-parts":[[2008,10,28]]}}}