22
Participants
Start Date
June 29, 2011
Primary Completion Date
January 13, 2014
Study Completion Date
January 13, 2014
Sildenafil study group
One dose of 20 mg Sildenafil will be given one hour before CT imaging.
University of Iowa, Iowa City
National Institutes of Health (NIH)
NIH
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eric A. Hoffman
OTHER