title: MRI-guided core biopsy of the prostate in the supine position--introduction of a simplified technique using large-bore magnet systems.
abstract: OBJECTIVE
  To introduce a simplified technique for MRI-guided core biopsies (MRGB) of the prostate in the supine position using large-bore magnet systems.
  
  
  METHODS
  Fifty men with a history of negative transrectal ultrasound-guided biopsies underwent MRGB in either a 1.5-T (13/50) or 3.0-T (37/50) wide-bore MRI unit. MRGBs were conducted with the patients in a supine position using a dedicated MR-compatible biopsy device.
  
  
  RESULTS
  We developed a dedicated positioning device for the supine position. Using this device, the biopsies were performed successfully in all patients. Apart from minor rectal bleeding, only one patient developed a major side effect (urosepsis). Histology revealed prostate cancer in 25/50 (50 %) patients.
  
  
  CONCLUSIONS
  The new technique appears feasible. Its major advantage is the more comfortable and patient-friendly supine position during the biopsy without the need to modify the MRI system's patient table.
  
  
  CONCLUSIONS
  • A novel positioning device for MRI-guided prostate biopsies has been developed. • Biopsies can be performed in the patient-friendly supine position. • The positioning device can be utilised without modifying the MRI's patient table.
authors.affiliation: Department of Radiology, University Hospital Erlangen-Nuremberg, Maximiliansplatz 1, 91054 Erlangen, Germany. Dr.Siegfried.Schwab@gmx.net
authors.forename: Siegfried A
authors.initials: SA
authors.lastname: Schwab
authors.forename: Michael A
authors.initials: MA
authors.lastname: Kuefner
authors.forename: Boris
authors.initials: B
authors.lastname: Adamietz
authors.forename: Karl
authors.initials: K
authors.lastname: Engelhard
authors.forename: Bastian
authors.initials: B
authors.lastname: Keck
authors.forename: Frank
authors.initials: F
authors.lastname: Kunath
authors.forename: Sven
authors.initials: S
authors.lastname: Wach
authors.forename: Bernd
authors.initials: B
authors.lastname: Wullich
authors.forename: Michael
authors.initials: M
authors.lastname: Uder
authors.forename: Dirk G
authors.initials: DG
authors.lastname: Engehausen
mesh_terms: D000368:Aged; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006801:Humans; D007089:Image Enhancement / Q000295:instrumentation / Q000379:methods; D061705:Image-Guided Biopsy / Q000295:instrumentation / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000295:instrumentation* / Q000379:methods*; D008297:Male; D008875:Middle Aged; D056888:Patient Positioning / Q000379:methods*; D011467:Prostate / Q000473:pathology*; D011471:Prostatic Neoplasms / Q000473:pathology*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D016683:Supine Position