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Figure 1 Value of prone high resolution (HR) CT imaging: resolution of dependent lung opacity. (A) Axial supine HRCT image showing bilateral dependent ground glass opacity (arrows; compare with fig 2A). (B) Axial prone HRCT image shows resolution of the ground glass opacity in (A), consistent with atelectasis. Note the opacity within the lungs anteriorly, representing dependent atelectasis occurring in the prone position.
