title: [Frequency of repeated examinations in the ultrasonographic section of a radiological university department].
abstract: OBJECTIVE
  What is the percentage of repeat examinations in the ultrasonographic section of a radiological university department?
  
  
  METHODS
  All 4116 patients, who were first examined in the sonographic section of the Radiologic Department of the University of Cologne from 5/97 to 5/98, were asked by the medical staff, whether, how often and by whom ultrasonographic, CT or MR examinations of the same organ system had been carried out during the last 4 weeks without evidence of clinical changes. The data were documented using a structured questionnaire.
  
  
  RESULTS
  Sonographic repeated examinations documented in 443 (10.8%) of the 4116 consultations. The proportion of in- to outpatients with repeat examinations was 26.0% to 74.0%. Contrarily, the repeated ultrasonographies were done by practitioners in 62.3% and by the university staff in 33.2% (radiology 48.2%). With regard to the 4116 consultations, the abdomen (81.1%) was the organ system most often examined repeatedly. Computed tomographies were already done or planned in 305 of 4116 patients (7.4%) and MR-tomographies were already done or planned in 57 patients (1.4%).
  
  
  CONCLUSIONS
  The rate of repeated ultrasonographic examinations in a radiological university hospital was 19.6%.
authors.affiliation: Institut und Poliklinik für Radiologische Diagnostik, Universität zu Köln. Barbara.Krug@medizin.uni-koeln.de
authors.forename: B
authors.initials: B
authors.lastname: Krug
authors.forename: H
authors.initials: H
authors.lastname: Stützer
authors.forename: K
authors.initials: K
authors.lastname: Lackner
authors.forename: O
authors.initials: O
authors.lastname: Schulte
authors.forename: M
authors.initials: M
authors.lastname: Zähringer
authors.forename: G
authors.initials: G
authors.lastname: Winnekendonk
authors.forename: F
authors.initials: F
authors.lastname: Schellhammer
authors.forename: D
authors.initials: D
authors.lastname: Maintz
authors.forename: A
authors.initials: A
authors.lastname: Gossmann
authors.forename: C
authors.initials: C
authors.lastname: Wesselmann
authors.forename: A
authors.initials: A
authors.lastname: Gindele
mesh_terms: D000005:Abdomen / Q000000981:diagnostic imaging; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D003627:Data Interpretation, Statistical; D005260:Female; D005858:Germany; D006785:Hospitals, University; D006801:Humans; D007297:Inpatients; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010045:Outpatients; D011872:Radiology Department, Hospital; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography
vernacular_title: Häufigkeit von Doppeluntersuchungen in der B-Bild-sonographischen Abteilung einer radiologischen Universitätsklinik.