Department of Diagnostic Radiology, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA.|Department of Diagnostic Radiology, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA.|Department of Diagnostic Radiology, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA.|Department of Diagnostic Radiology, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA.