Re: Seed Implants using MRI

[Ccja@aol.com]

I suspect that the MRI is being used, experimentally, to verify the locations
of the seeds, post-implant, as CT is, most places, routinely. That's how you
show that your actual implantation meets your QA standards for dose delivery
(how far from the prescription, which is, effectively, the dosimetrists'
insertion plan, because the target dose is, usually, a standard value).

People may think that MRI is a better way of doing it, and are studying it.
There should be no need for radiation survey instruments in the scanning
room.

In point of fact, I'd like to know how one could do the original implant,
using entirely nonmagnetic materials. The implants, themselves, consist,
variously, of titanium, silver, lead, and carbon (neglectly, obviously, their
radioactive burden, the which is ). And, of course, everything else, of
importance, is stainless steel or plastic.