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However, computed tomography urography presently has a higher diagnostic accuracy for upper tract urothelial carcinoma (94.2\u201399.6%) than intravenous urography (80.8\u201384.9%), and has replaced intravenous urography as the first\u2010line imaging test for investigating patients with a high risk of upper tract urothelial carcinoma. Although the detection rate for bladder tumors using standard computed tomography urography is not yet high enough to replace cystoscopy, the addition of a 60\u2010 to 80\u2010s delayed scan after the administration of contrast material for the whole pelvis improves the detection rate. A drawback to computed tomography urography is the higher radiation dose of 15\u201335\u00a0mSv, compared with a mean effective dose of 5\u201310\u00a0mSv for intravenous urography. Among several approaches to reducing the radiation dose, the use of an iterative reconstruction algorithm is most likely to become an effective solution because of its simplicity. One advantage of computed tomography urography over intravenous urography is its ability to reliably differentiate between upper tract urothelial carcinoma and calculi or blood clots. Computed tomography urography also shows characteristic findings of other benign conditions. These findings, in combination with negative cytology, are very important diagnostic clues for avoiding an unnecessary nephroureterectomy. For the clinical staging, a recent study has reported the high diagnostic accuracy of computed tomography urography with respect to \u2265pT3 tumors. The present review shows the current status of computed tomography urography for the evaluation of upper tract urothelial carcinoma.<\/jats:p>","DOI":"10.1111\/iju.13032","type":"journal-article","created":{"date-parts":[[2016,1,10]],"date-time":"2016-01-10T22:07:31Z","timestamp":1452463651000},"page":"284-298","source":"Crossref","is-referenced-by-count":75,"title":["Role of computed tomography urography in the clinical evaluation of upper tract urothelial carcinoma"],"prefix":"10.1111","volume":"23","author":[{"given":"Masahiro","family":"Jinzaki","sequence":"first","affiliation":[{"name":"Department of Diagnostic Radiology Keio University School of Medicine Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eiji","family":"Kikuchi","sequence":"additional","affiliation":[{"name":"Department of Urology Keio University School of Medicine Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hirotaka","family":"Akita","sequence":"additional","affiliation":[{"name":"Department of Diagnostic Radiology Keio University School of Medicine Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hiroaki","family":"Sugiura","sequence":"additional","affiliation":[{"name":"Department of Diagnostic Radiology Keio University School of Medicine Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hiroshi","family":"Shinmoto","sequence":"additional","affiliation":[{"name":"Department of Radiology National Defense Medical College Tokorozawa Saitama Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mototsugu","family":"Oya","sequence":"additional","affiliation":[{"name":"Department of Urology Keio University School of Medicine Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2016,1,10]]},"reference":[{"key":"e_1_2_9_2_1","first-page":"150","volume-title":"World Health Organization Classification of Tumours Pathology and Genetics of Tumors of the Urinary System and Male Genital Organs","author":"Delahunt B","year":"2004"},{"key":"e_1_2_9_3_1","first-page":"43","article-title":"Conservative management of upper urinary tract tumors","volume":"42","author":"Deligne E","year":"2003","journal-title":"J. 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