J Korean Radiol Soc.  1994 Mar;30(3):539-548.

Reliability of MRI Using Endorectal Coil in Local Staging of Prostate Carcinoma

• Kim JC
• Schnall MD

Abstract

PURPOSE
To evaluate the usefulness of endorectal surface coil magnetic resonance (MR) imaging in local staging of prostate carcinoma which is important to determine the method of therapy.
MATERIALS AND METHODS
Endorectal surface coil prostate MR imaging was performed in 82 patients who received radical prostatectomy and comparatively analyzed with the pathologic findings. Multi-coil array technique with endorectal balloon coil and phased array coil in anterior pelvic wall was often applied. After localization with WARPSPGR Iocal izer (flip angle:30 degrees), the prostate images were acquired with FOV 10--12cm, 3--4mm slice thickness, 2 NEX, 256) < 128 matrix (fast spin echo=FSE:256X256, Echo train 16) by 1. 5T GE Signa. T1 and T2 weighted axial spin echo or FSE, with or without sagittal and/or coronal FSE were obtained.
RESULTS
MR imaging using endorectal coil had 82% of (87% if 5 underestimated cases of microscopic capsular or seminal vesicular invasion are excluded) accuracy in the differentiation of intraprostatic carcinomas from those with extracapsular extension. In preoperative MR diagnosis of stage B carcinoma, the sensitivity was 79% and the specificity was 75%.
CONCLUSION
MR imaging using endorectal surface coil with or without multi-coil array technique is considered to be the method of choice in the determination of the local extent of prostatic carcinoma.

MeSH Terms

Diagnosis
Humans
Magnetic Resonance Imaging*
Prostate*
Prostatectomy
Sensitivity and Specificity