What are some considerations for planning T&O brachytherapy in a patient with bilateral hip replacements, where it is difficult to delineate disease on MRI and even surrounding structures on CT?

I have favored MRI-based contouring and planning in these patients. Dual-energy CT or simulation metal artifact reduction software can also help with better delineation and planning.

Perhaps MV-CBCT:

Jacobson et al., PMID 38198730.