Try Advanced Radiology in the White Square Professional Building on Franklin Square Drive in Baltimore County (near Franklin Square Hospital). They have an open MRI, not sure what their limits are though.
Sorry I couldn't help more! Good luck!!!
Tia
Yes, due to your size and weight you would be accomodated at Sinai Hospital in Baltimore, or Suburban Hospital in Bethesda, MD. Their MRI tables are not the usual up to 325lb ones.