I am looking for data focused on Interventional Radiology Market.  I
am specifically looking for procedure related data for procedures
performed by Interventional Radiologists.  I would like the format to
be:

# - Annual volume of ALL procedures performed by interventional
radiologists in the U.S. (Procedures should include all areas of
Interventional Radiology and not be limited to angioplasty/vascular
procedures).

% - Percentage of outpatient Interventional Radiology procedures
% - Percentage of inpatient Interventional Radiology procedures  

# - Annual volume of Angioplasty and vascular procedures performed by
interventional radiologists


I am also looking for:

# - number of U.S. Hospitals offering Interventional Radiology services