title: [CT-guided biopsies, drainage and and percutaneous gastrostomies: comparison of punctures with and without CT fluoroscopy].
abstract: OBJECTIVE
  The purpose of this prospective and randomized study was to compare two CT guidance techniques (CT-fluoroscopy/conventional CT) on percutaneous biopsies, drainages and gastrostomies.
  
  
  METHODS
  78 CT-guided interventions (29 biopsies, 38 drainages, 8 gastrostomies) were recorded and the Mann-Whitney U-test was applied. In 3 cases both guidance techniques were used. Procedure times, yields and radiation doses were analyzed.
  
  
  RESULTS
  All 38 drainages and all 8 gastrostomies were successfully applied. 13 biopsies with conventional CT guidance (n = 15) and 13 biopsies with CT-fluoroscopy (n = 14) showed a representative histopathologic result. The procedure times were not significantly different (drainages: p = 0.658, biopsies: p = 0.431, gastrostomies: p > 0.06). The radiation doses (CTID1) of the biopsies and drainages showed significantly higher values (drainages p < 0.001, biopsies p < 0.001) with CT-fluoroscopy than with conventional CT. There were no significant differences in gastrostomy procedures (p > 0.06).
  
  
  CONCLUSIONS
  Procedure times and yields were not improved by using CT-fluoroscopy. Radiation doses showed significantly higher values with CT-fluoroscopy than with conventional CT guidance. CT-fluoroscopy was advantageous in non-compliant patients over conventional CT guidance.
authors.affiliation: Institut für Röntgendiagnostik, Klinikum der Universität Regensburg.
authors.forename: V
authors.initials: V
authors.lastname: Spies
authors.forename: B
authors.initials: B
authors.lastname: Butz
authors.forename: C
authors.initials: C
authors.lastname: Altjohann
authors.forename: S
authors.initials: S
authors.lastname: Feuerbach
authors.forename: J
authors.initials: J
authors.lastname: Link
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001706:Biopsy / Q000379:methods*; D016009:Chi-Square Distribution; D004322:Drainage / Q000379:methods*; D005260:Female; D005471:Fluoroscopy; D005774:Gastrostomy / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011829:Radiation Dosage; D014057:Tomography, X-Ray Computed