Prostate cancer: local staging with endorectal surface coil MR imaging.

Authors:
  • YIY Imai
    Y Imai
  • JTJ Tomaszewski
    J Tomaszewski
  • HPH M Pollack
    H M Pollack
  • HKH Y Kressel
    H Y Kressel
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Abstract
Endorectal surface coil magnetic resonance (MR) imaging was used to stage the local extent of prostate cancer in 22 patients. The endorectal coil images were acquired with a 10-12-cm field of view and a 4-mm section thickness. All pathologic specimens were reviewed by one pathologist. Endorectal surface coil MR imaging was 82% accurate in the differentiation of stage B from stage C cancer. One case was overestimated, and three cases were underestimated. The three underestimated cases consisted of two cases of microscopic capsular invasion and one case of minimal seminal vesicle invasion. In a comparison of retrospective, blinded readings of endorectal coil and body coil images, there was an average improvement in accuracy of 16% in staging prostate cancer with endorectal coil images.