Monday, August 01, 2005

Hui 07/29/05 Endorectal coil for diagnosis of recurrent pelvic

Today in Columbia Hospital I observed a prostate MRI using endorectal coil. Endorectal coil is one type of surface coil and is routinely used in detecting local recurrence of gynecologic tumors, prostate and rectal cancers. It is a thin wire covered with an inflated latex balloon. The coil will be positioned inside the rectum before scanning. Endorectal coil helps focus on the prostate and surrounding structures, improves ability to visualize internal architecture of the prostate and periprostatic structures, including prostate capsule and neurovascular bundles. They come in different shapes that are specifically designed for anatomical differences when imaging prostate, cervix and colorectal regions. The top one in the image is for prostate imaging.

The prostate is a walnut-sized gland in men. It's located just below the bladder and surrounds the urethra, the tube that carries urine from the bladder out through the penis. The main function of prostate is to produce fluid for semen. Since prostate glands lie deep inside the body and is in such a small size, it is not easy to image their detail structure using the body coil. Research showed that theie is significant difference in accuracy between body coil and endorectal coil examinations for prostatic cance [Reference: Abdom Imaging. 1996 Jul-Aug;21(4):345-52.]. Endorectal MRI may help in this situation since localizing prostate tumors with MRI appears more accurate than localizing such tumors with ultrasound. [Reference: J Urology 1999;162:1314-1317.] Thus endorectal MRI is highly recommended for detection of prostatic recurrence.


Blogger Cameron VSJ said...


I have a quick question about your blog, would you mind emailing me when you get a chance?



1:28 PM  

Post a Comment

<< Home