[1] Univ Calif Los Angeles, Med Ctr, Dept Radiol Sci, Los Angeles, CA 90095 USA
[2] Soc Cardiovasc & Intervent Radiol, Fairfax, VA USA
[3] Univ N Carolina, Dept Radiol, Chapel Hill, NC USA
[4] New York Med Coll, Dept Radiol, Valhalla, NY 10595 USA
[5] Delaware Valley Imaging, Bala Cynwyd, PA USA