{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T10:30:11Z","timestamp":1777890611484,"version":"3.51.4"},"reference-count":15,"publisher":"SAGE Publications","issue":"1_suppl","license":[{"start":{"date-parts":[[2017,1,1]],"date-time":"2017-01-01T00:00:00Z","timestamp":1483228800000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Technology and Health Care"],"published-print":{"date-parts":[[2017,1]]},"abstract":"<jats:p>Ureteral stenosis presents with a narrowing in the ureter, due to an intrinsic or extrinsic ureteral disease, such as ureter cancer or retroperitoneal fibrosis. The placement of a double J stent in the upper urinary system is one of the most common treatments of ureteral stenosis, along with the insertion of a percutaneous nephrostomy tube into the renal pelvis. The effect that the side holes in a double J stent have on urine flow has been evaluated in a few studies using straight ureter models. In this study, urine flow through a double J stent\u2019s side holes was analyzed in curved ureter models, which were based on human anatomy. In ureteral stenosis, especially in severe ureteral stenosis, a stent with side holes had a positive effect on the luminal and total flow rates, compared with the rates for a stent without side holes. The more side holes a stent has, the greater the luminal and total flow rates. However, the angular positions of the side holes did not affect flow rate. In conclusion, the side holes in a double J stent had a positive effect on ureteral stenosis, and the effect became greater as the ureteral stenosis became more severe.<\/jats:p>","DOI":"10.3233\/thc-171307","type":"journal-article","created":{"date-parts":[[2017,6,2]],"date-time":"2017-06-02T15:40:23Z","timestamp":1496418023000},"page":"63-72","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":17,"title":["Numerical analysis of urine flow through the side holes of a double J stent in a ureteral stenosis"],"prefix":"10.1177","volume":"25","author":[{"given":"Hyoung-Ho","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Mechanical Engineering, Soongsil University, Seoul, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Young Ho","family":"Choi","sequence":"additional","affiliation":[{"name":"Department of Radiology, Seoul National University Boramae Hospital, Seoul, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Seung Bae","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Urology, Seoul National University Boramae Hospital, Seoul, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yasutaka","family":"Baba","sequence":"additional","affiliation":[{"name":"Department of Radiology, Hiroshima University Hospital, Hiroshima, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kyung-Wuk","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, Soongsil University, Seoul, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sang-Ho","family":"Suh","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, Soongsil University, Seoul, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2017,1,1]]},"reference":[{"key":"bibr1-THC-171307","doi-asserted-by":"publisher","DOI":"10.1007\/s00270-013-0675-2"},{"key":"bibr2-THC-171307","doi-asserted-by":"publisher","DOI":"10.1177\/1756287210370699"},{"key":"bibr3-THC-171307","doi-asserted-by":"publisher","DOI":"10.1089\/end.2009.0516"},{"key":"bibr4-THC-171307","doi-asserted-by":"publisher","DOI":"10.1115\/1.2472381"},{"key":"bibr5-THC-171307","doi-asserted-by":"publisher","DOI":"10.1093\/imammb\/dqn020"},{"key":"bibr6-THC-171307","doi-asserted-by":"publisher","DOI":"10.1007\/s00285-003-0252-4"},{"key":"bibr7-THC-171307","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0087433"},{"key":"bibr8-THC-171307","unstructured":"CarugoDZhangXDrakeJMClavicaF. 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