{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,21]],"date-time":"2026-07-21T03:01:03Z","timestamp":1784602863093,"version":"3.55.0"},"reference-count":11,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2005,12,1]],"date-time":"2005-12-01T00:00:00Z","timestamp":1133395200000},"content-version":"vor","delay-in-days":9741,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J of Clinical Ultrasound"],"published-print":{"date-parts":[[1979,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Four hundred ninety\u2010two patients, including 449 pregnant patients, 39 nonpregnant control patients, and 4 patients with pelvic masses, had renal ultrasonography using gray scale technique. Measurements of renal pelvic diameters in the normal pregnant patients revealed an overall incidence of 63 percent renal pelvic dilatation over the nonpregnant controls. Maximum normal renal pelvic diameters were 1.1 cm on the right and 0.9 cm on the left. The maximum normal expected renal pelvic diameter (97.5 percent confidence level) in pregnancy is 2.7 cm on the right and 1.8 cm on the left in the last two trimesters of pregnancy. There was no significant difference between primiparous and multiparous patients, but pregnant patients were significantly different from controls in every trimester (<jats:italic>p<\/jats:italic> &lt; 0.01). Maximum dilatation occurred at 24\u201328 weeks of gestation. The right renal pelvis was enlarged to the greatest degree in 90 percent of normal patients. Patients with pelvic masses showed a similar pattern of right\u2010sided hydronephrosis.<\/jats:p>","DOI":"10.1002\/jcu.1870070211","type":"journal-article","created":{"date-parts":[[2007,2,28]],"date-time":"2007-02-28T00:09:38Z","timestamp":1172621378000},"page":"128-132","source":"Crossref","is-referenced-by-count":33,"title":["Ultrasound evaluation of hydronephrosis of pregnancy"],"prefix":"10.1002","volume":"7","author":[{"given":"L. M.","family":"Erickson","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S. F.","family":"Nicholson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"D. B.","family":"Lewall","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lauraline","family":"Frischke","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2005,12]]},"reference":[{"key":"e_1_2_1_2_2","doi-asserted-by":"publisher","DOI":"10.1097\/00006254-196312000-00001"},{"key":"e_1_2_1_3_2","first-page":"81","article-title":"Pregnancy dilatation of the urinary tract","volume":"3","author":"Dure\u2010Smith P","year":"1972","journal-title":"CRC Crit Rev Radiol Sci"},{"key":"e_1_2_1_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/0090-4295(76)90041-8"},{"key":"e_1_2_1_5_2","first-page":"1042","article-title":"Etiology of hydronephrosis of pregnancy","volume":"119","author":"Harrow BR","year":"1964","journal-title":"Surg Gynecol Obstet"},{"key":"e_1_2_1_6_2","first-page":"65","article-title":"Urological aspects of gynecology","volume":"62","author":"TeLinde RW","year":"1936","journal-title":"Am J Obstet Gynecol"},{"key":"e_1_2_1_7_2","doi-asserted-by":"crossref","first-page":"356","DOI":"10.1016\/0002-9378(70)90414-X","article-title":"Pyeloureteral dilatation in pregnancy","volume":"108","author":"Bellina JH","year":"1970","journal-title":"Am J Obstet Gynecol"},{"key":"e_1_2_1_8_2","first-page":"396","article-title":"Hydronephrosis of pregnancy","volume":"16","author":"Marchant DJ","year":"1965","journal-title":"Surg Forum"},{"key":"e_1_2_1_9_2","first-page":"5462","article-title":"Ureteric dilatation in nonpregnant women","volume":"63","author":"Spiro FI","year":"1970","journal-title":"Proc R Soc Med"},{"key":"e_1_2_1_10_2","doi-asserted-by":"publisher","DOI":"10.3109\/00016347509157761"},{"key":"e_1_2_1_11_2","doi-asserted-by":"publisher","DOI":"10.3109\/00365517309084319"},{"key":"e_1_2_1_12_2","doi-asserted-by":"publisher","DOI":"10.3109\/00016347209154010"}],"container-title":["Journal of Clinical Ultrasound"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fjcu.1870070211","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jcu.1870070211","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,11,12]],"date-time":"2023-11-12T15:26:11Z","timestamp":1699802771000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/jcu.1870070211"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1979,4]]},"references-count":11,"journal-issue":{"issue":"2","published-print":{"date-parts":[[1979,4]]}},"alternative-id":["10.1002\/jcu.1870070211"],"URL":"https:\/\/doi.org\/10.1002\/jcu.1870070211","archive":["Portico"],"relation":{},"ISSN":["0091-2751","1097-0096"],"issn-type":[{"value":"0091-2751","type":"print"},{"value":"1097-0096","type":"electronic"}],"subject":[],"published":{"date-parts":[[1979,4]]}}}