Proton two-dimensional chemical shift imaging for evaluation of prostate cancer: external surface coil vs. endorectal surface coil.
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.
Kaji
Yasushi
Y
Division of MR Imaging, Department of Radiology, Tenri Hospital, Tenri, Japan. ykaji@med.kobe-u.ac.jp
Wada
Akihiko
A
Imaoka
Izumi
I
Matsuo
Michimasa
M
Terachi
Toshiro
T
Kobashi
Yoichiro
Y
Sugimura
Kazuro
K
Fujii
Masahiko
M
Maruyama
Katsuya
K
Takizawa
Osamu
O
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
D019343:Citric Acid; D003401:Creatine; D002794:Choline