@Article{,
AUTHOR = {Daniel Canter, Alexander Kutikov, Eric M. Horwitz, Richard E. Greenberg},
TITLE = {Transrectal implantation of electromagnetic transponders following radical prostatectomy for delivery of IMRT},
JOURNAL = {Canadian Journal of Urology},
VOLUME = {18},
YEAR = {2011},
NUMBER = {4},
PAGES = {5844--5848},
URL = {http://www.techscience.com/CJU/v18n4/61904},
ISSN = {1488-5581},
ABSTRACT = {Surgical treatment for men with localized prostate 
cancer —open, laparoscopic, or robotically-assisted-- 
remains one of the therapeutic mainstays for this group 
of patients. Despite the stage migration witnessed in 
patients with prostate cancer since the introduction of 
prostate-specific antigen (PSA) screening, detection 
of extraprostatic disease at the time of surgery and 
biochemical recurrence following prostatectomy pose 
signifi cant therapeutic challenges. Radiation therapy 
(RT) after radical prostatectomy (RP) has been associated 
with a survival benefi t in both the adjuvant and salvage 
setting. Nevertheless, optimal targeting of the prostate 
bed following surgery remains challenging. The Calypso 
4D Localization System (Calypso Medical Technologies, 
Seattle, WA, USA) is a target positioning device that 
continuously monitors the location of three implantable 
electromagnetic transponders. These transponders can be 
placed into the empty prostatic bed after prostatectomy 
to facilitate the delivery of radiation therapy in the post-surgical setting.<br/>
In this article, we detail our technique for transrectal 
placement of electromagnetic transponders into the post-prostatectomy bed for the delivery of adjuvant or salvage 
intensity-modulated radiation therapy. We prefer this 
technique of post-surgical radiation therapy because it 
allows for improved localization of the target area allowing 
for the maximal delivery of the radiation dose while 
minimizing exposure of surrounding normal tissues. 
Although emerging, our initial oncologic and functional 
outcomes have been promising.},
DOI = {}
}