title: Helical CT and CT angiography for the identification of crossing vessels at the ureteropelvic junction.
abstract: In comparison with pyeloplasty, endourologic procedures for the treatment of ureteropelvic junction obstruction offer good success rates with less morbidity and a shorter hospitalization; however, studies have found lower success rates and increased complications in patients with crossing vessels. Conventional diagnostic angiography and intravenous urography have both been used to identify crossing vessels at the UPJ; but, a reliable, less invasive, less costly, and simpler preoperative procedure to identify crossing vessels is needed. Helical CT with CT angiography is a promising noninvasive technique for the identification of crossing vessels at the ureteropelvic junction, which can be used for surgical planning of endourologic treatment of UPJ obstruction.
authors.affiliation: Division of Radiology, Cleveland Clinic Foundation, Ohio, USA.
authors.forename: B R
authors.initials: BR
authors.lastname: Herts
mesh_terms: D006801:Humans; D007091:Image Processing, Computer-Assisted; D007682:Kidney Pelvis / Q000098:blood supply* / Q000000981:diagnostic imaging; D012077:Renal Artery / Q000000981:diagnostic imaging*; D012082:Renal Veins / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed / Q000379:methods*; D014513:Ureter / Q000098:blood supply* / Q000000981:diagnostic imaging; D014517:Ureteral Obstruction / Q000601:surgery