title: [Comparative study of X-ray digital tomosynthesis imaging based on intravenous urography and unenhanced multidetector-row computerized tomography in urinary calculi].
abstract: OBJECTIVE
  To evaluate the clinical application value of X-ray digital DTSynthesis (DTS) based on IVU (Intravenous Urography)in urinary calculi contrasted with unenhanced multidetector-row computerized tomography.
  
  
  METHODS
  75 patients suspected of urinary calculi underwent IVU, DTS based on IVU and UMDCT. The diagnostic sensitivity, specificity, accuracy, positive predictive value and negative predictive of the three imaging ways were acquired according to operations, respectively. Chi-square test was used to evaluate the difference among the three ways.
  
  
  RESULTS
  In 75 cases, 60 cases were proved to be urinary calculi. The diagnostic sensitivity, specificity, accuracy, positive predictive value and negative predictive of IVU, DTS based on IVU,UMDCT is 70.0%, 73.3%, 70.7%, 91.3%, 37.9%; 91.7%, 86.7%, 90.7%, 96.5%, 72.2%; 96.7%, 86.7%, 94.7%, 96.7%, 86.7%, respectively.No significant differences between DTS based on IVU and UMDCT were found in sensitivity, specificity, accuracy, positive predictive value and negative predictive. Both cases are better than IVU in diagnostic ability.
  
  
  CONCLUSIONS
  There is no significant difference in diagnostic ability of urinary calculi between DTS and UMDCT. DTS can be used as a routine imaging technique in diagnosis and follow up of urinary calculi.
authors.affiliation: Department of Radiology, the People's Hospital of Xinjiang, Urumqi 830000, China.
authors.forename: Batuer
authors.initials: B
authors.lastname: Tuerdi
authors.affiliation: Department of Radiology, the People's Hospital of Xinjiang, Urumqi 830000, China. Email:xjxjwanghui@163.com.
authors.forename: Hui
authors.initials: H
authors.lastname: Wang
authors.affiliation: Department of Radiology, the People's Hospital of Xinjiang, Urumqi 830000, China.
authors.forename: Zhong
authors.initials: Z
authors.lastname: Huo
authors.affiliation: Department of Radiology, the People's Hospital of Xinjiang, Urumqi 830000, China.
authors.forename: Gulipiyan
authors.initials: G
authors.lastname: Abula
authors.affiliation: Department of Radiology, the People's Hospital of Xinjiang, Urumqi 830000, China.
authors.forename: Biekemulati
authors.initials: B
authors.lastname: Mahemuti
authors.affiliation: Department of Radiology, the People's Hospital of Xinjiang, Urumqi 830000, China.
authors.forename: Maihemuti
authors.initials: M
authors.lastname: Abulizi
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed / Q000379:methods*; D014545:Urinary Calculi / Q000000981:diagnostic imaging*; D014567:Urography / Q000379:methods*; D055815:Young Adult