Jym, if you are considering LDR brachytherapy your urologist and/or RO should check your AUA Symptom Score www.prostatechicago.com/forms/aua-symptom-score.pdf
If you have a score much above 15 or if you have significant retention post-voiding, then you may not be a good candidate for LDR brachy. However, I'm not sure about
the constraints for HDR brachy so perhaps one of the HDR guys will chime in as well.
Hope this helps.