A urologist can't explain all the options, Ida. Urologists do surgery; oncologists do non-surgical treatment such as brachytherapy and radiotherapy. Your husband needs to ask for an appointment with an oncologist to discuss non-surgical options.
In the meantime, do download the information sheets (aka the "toolkit") from this site. They contain a wealth of information about the different treatments for prostate cancer and the probable side-effects of each type of treatment.
Best wishes,
Chris