1. Impaired Left Lower Lobe Ventilation in Patients with Cardiomegaly
Mark S.M. Alexander, F.R.C.R., A. Michael Peters, M.D., John P. Cleland, M.R.C.P., John Peter Lavender, M.D. 
CHEST 
Volume 101, Issue 5, Pages (May 1992)
DOI: /chest
Copyright © 1992 The American College of Chest Physicians Terms and Conditions

2. FIGURE 1
Posterior views of V ˙ with 81mKr, showing reduction of left lower lobe V ˙ (arrow) in supine position, with phenomenon being partially reversed in prone position.
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Copyright © 1992 The American College of Chest Physicians Terms and Conditions

3. FIGURE 2
Time-activity curve for ROIs at right and left posterior lung bases following intravenous injection of 133Xe, showing initial peak corresponding to Q ˙ and washout slope corresponding to ventilatory turnover ( V ˙ /vol).
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Copyright © 1992 The American College of Chest Physicians Terms and Conditions

4. FIGURE 3
Change in volume with position, showing relative reduction in volume at left base in supine compared with prone position. Volume ratios were calculated from 81mKr inhalation data for V ˙ and intravenous 133Xe washout slope ratios. Lefthand side represents individual patients. Righthand side represents mean values; p value is based on Wilcoxon signed rank test.
CHEST  , DOI: ( /chest )
Copyright © 1992 The American College of Chest Physicians Terms and Conditions