Regarding brachytherapy, your Dad would not be eligible for LDR in Canada, but he would probably be a good candidate for HDR combination treatment, which is done in many
locations across Canada:.
"
Canadian eligibility criteria: Patients with low-risk disease (≤T2, PSA <10 and Gleason scores ≤6) (Canadian Consensus Criteria, which mirror those to the NCCN)14 are eligible for LDR brachytherapy as monotherapy in all Canadian provinces with brachytherapy programs. British Columbia, Manitoba, Quebec and Alberta also offer LDR monotherapy to patients with intermediate-risk disease. Ontario currently funds LDR brachytherapy, only for patients with low risk disease. Intermediate (<T2, PSA 10–20 or Gleason score < 7) or high risk disease (T3a, PSA >20 or Gleason score 8–10) patients are commonly treated with HDR brachytherapy combined with external beam radiotherapy (EBRT).....
HDR brachytherapy in Canada: HDR brachytherapy is currently used as a method of local dose escalation for patients with intermediate- and high-risk disease in Ontario (Toronto, London, Windsor, Oshawa), Quebec (Montreal, Quebec), New Brunswick (Moncton) and British Columbia (Kelowna), with plans to begin similar programs in St John’s, Halifax, Edmonton, Calgary and Saskatoon. "
www.ncbi.nlm.nih.gov/pmc/articles/PMC3650818/