Rationale and Objectives. Atelectasis, the collapse of small airways, is a significant clinical problem. [ We use hyperpolarized (HP) 3He magnetic resonance imaging (MRI), or HP 3He MRI, to describe atelectasis in the normal Yorkshire pig, the pig with atelectasis, and the pig with re-expansion of atelectasis. We compare HP 3He MRI findings with depictions of atelectasis by proton MRI.
Materials and Methods. During ... (More)