Columbia subject headings:
Diagnostic imaging--United States--Finance.
Medicare.
Older people--Diseases--Diagnosis--United States--Finance.
Harvard subject headings:
Diagnostic imaging--United States--Finance.
Medicare.
Older people--Diseases--Diagnosis--United States--Finance.
Princeton subject headings:
Diagnostic imaging--United States--Finance.
Medicare.
Older people--Diseases--Diagnosis--United States--Finance.