title: Proton two-dimensional chemical shift imaging for evaluation of prostate cancer: external surface coil vs. endorectal surface coil.
abstract: OBJECTIVE
  To compare the diagnostic ability of proton magnetic resonance spectroscopy (MRS) using an external surface coil with that using an endorectal surface coil in patients with prostate cancer.
  
  
  METHODS
  MR imaging (MRI) and two-dimensional chemical shift imaging (2D CSI) were performed in 5 healthy volunteers and in 35 patients with prostate cancer. The receiver coil was the anterior lower part of a phased-array coil or an endorectal surface coil.
  
  
  RESULTS
  Receiver-operating characteristic analysis for diagnosing prostate cancer showed no significant difference (P = 0.784) between the area under the curve of phased-array coil CSI and that of endorectal surface coil CSI.
  
  
  CONCLUSIONS
  The phased-array coil CSI could provide comparable detection accuracy to endorectal surface coil CSI. In patients with rectal diseases or patients who could not tolerate the discomfort with insertion of an endorectal surface coil, we recommend the phased-array coil CSI.
authors.affiliation: Division of MR Imaging, Department of Radiology, Tenri Hospital, Tenri, Japan. ykaji@med.kobe-u.ac.jp
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Kaji
authors.forename: Akihiko
authors.initials: A
authors.lastname: Wada
authors.forename: Izumi
authors.initials: I
authors.lastname: Imaoka
authors.forename: Michimasa
authors.initials: M
authors.lastname: Matsuo
authors.forename: Toshiro
authors.initials: T
authors.lastname: Terachi
authors.forename: Yoichiro
authors.initials: Y
authors.lastname: Kobashi
authors.forename: Kazuro
authors.initials: K
authors.lastname: Sugimura
authors.forename: Masahiko
authors.initials: M
authors.lastname: Fujii
authors.forename: Katsuya
authors.initials: K
authors.lastname: Maruyama
authors.forename: Osamu
authors.initials: O
authors.lastname: Takizawa
mesh_terms: D000328:Adult; D000368:Aged; D002794:Choline / Q000378:metabolism; D019343:Citric Acid / Q000378:metabolism; D003401:Creatine / Q000378:metabolism; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008297:Male; D008875:Middle Aged; D011471:Prostatic Neoplasms / Q000473:pathology*; D012372:ROC Curve
chemical_list: D019343:Citric Acid; D003401:Creatine; D002794:Choline