title: Intracavitary contrast-enhanced ultrasound in abscess drainage--feasibility and clinical value.
abstract: OBJECTIVE
  To evaluate the usefulness of intracavitary-applied contrast-enhanced ultrasound (ICCEUS) with BR1 in ultrasound-guided puncture and drainage of abdominal and pelvic abscesses.
  
  
  METHODS
  A total of 71 consecutive patients received ICCEUS after placement of a drainage catheter or a needle in abdominal or pelvic abscesses. Portions of 0.1 ml of BR1 and 20 ml of saline were injected through the drainage catheter or needle. Ultrasound recordings were evaluated to answer the following questions: correct placement of the catheter by showing enhancement in the cavity and the drain - ICCEUS findings suggesting incomplete enhancement in all abscess cavities - enhancement in non-abscess structures.
  
  
  RESULTS
  About 52% of patients had liver, 14% of patients had intraperitoneal, 11% had subphrenic, 14% had retroperitoneal, 6% had splenic, and 4% had pelvic abscesses. The majority of the patients received drain placement with 10-F using trocar technique. Enhancement in the drain or needle was seen in all patients. In 2% of patients, during the initial approach, a dislodgment of the catheter from the abscess cavity was diagnosed. Due to non-enhancing abscess compartments, in 36% of the patients more than one drainage treatment was necessary at the time of the first approach. In 14% of the patients communication with surrounding structures was diagnosed. Additional treatment resulted in 4% of cases.
  
  
  CONCLUSIONS
  ICCEUS was helpful in all patients to confirm correct placement of drain or puncture needle. In 40% of patients, as a consequence of ICCEUS, additional therapy was scheduled, either additional drainage or abscess puncture, endoscopic retrograde drainage of the biliary or pancreatic duct or thoracic intervention.
authors.affiliation: a 1 Medical clinic 2, Caritas-Krankenhaus Bad Mergentheim , Bad Mergentheim, Germany.
authors.forename: Andre
authors.initials: A
authors.lastname: Ignee
authors.affiliation: b 2 Department of Internal Medicine, Krankenhaus Märkisch-Oderland , Strausberg, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Jenssen
authors.affiliation: a 1 Medical clinic 2, Caritas-Krankenhaus Bad Mergentheim , Bad Mergentheim, Germany.
authors.forename: Xin-Wu
authors.initials: XW
authors.lastname: Cui
authors.affiliation: a 1 Medical clinic 2, Caritas-Krankenhaus Bad Mergentheim , Bad Mergentheim, Germany.
authors.forename: Gudrun
authors.initials: G
authors.lastname: Schuessler
authors.affiliation: a 1 Medical clinic 2, Caritas-Krankenhaus Bad Mergentheim , Bad Mergentheim, Germany.
authors.forename: Christoph Frank
authors.initials: CF
authors.lastname: Dietrich
mesh_terms: D000005:Abdomen / Q000000981:diagnostic imaging* / Q000601:surgery; D000038:Abscess / Q000000981:diagnostic imaging* / Q000601:surgery*; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003287:Contrast Media; D004322:Drainage / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010388:Pelvis / Q000000981:diagnostic imaging* / Q000601:surgery; D011677:Punctures; D012187:Retroperitoneal Space; D014463:Ultrasonography / Q000379:methods*; D055815:Young Adult
chemical_list: D003287:Contrast Media
keywords: BR1; abscess drainage; contrast enhanced ultrasound; intervention; intracavitary application; ultrasound; ultrasound contrast agent