1. Electrical impedance tomography to confirm correct placement of double-lumen tube: a feasibility study 
D. Steinmann, C.A. Stahl, J. Minner, S. Schumann, T. Loop, A. Kirschbaum, H.J. Priebe, J. Guttmann 
British Journal of Anaesthesia 
Volume 101, Issue 3, Pages (September 2008)
DOI: /bja/aen166
Copyright © 2008 British Journal of Anaesthesia Terms and Conditions

2. Fig 1
Study protocol. Recording of EIT was started during spontaneous breathing in the awake patient. After tracheal intubation, the lungs were ventilated with a tidal volume (Vt) of 10 ml kg−1 body weight. During OLV, Vt was reduced to 5 ml kg−1. EIT was quantified during three consecutive breaths before and after FOB in the supine and lateral positions.
British Journal of Anaesthesia  , DOI: ( /bja/aen166)
Copyright © 2008 British Journal of Anaesthesia Terms and Conditions

3. Fig 2
Representative EIT images recorded in one patient: during spontaneous breathing (a), after endotracheal intubation (b), during left OLV (c) and right OLV (d) in the supine position, and during left OLV (e) and right OLV (f) in the lateral position. EIT images during OLV were obtained after ensuring optimal placement of the DLT by FOB. During left and right OLV, the percentage of ventilation distributed to the respective lung is listed in brackets. Numbers 1–4 indicate ROIs as defined in the text.
British Journal of Anaesthesia  , DOI: ( /bja/aen166)
Copyright © 2008 British Journal of Anaesthesia Terms and Conditions

4. Fig 3
Distribution of ventilation during various stages of the study protocol after fibreoptic bronchoscopic control. Box plots show the 10th, 25th, 50th, 75th, and 90th percentiles. NS, not significant. *P<0.01 between indicated values.
British Journal of Anaesthesia  , DOI: ( /bja/aen166)
Copyright © 2008 British Journal of Anaesthesia Terms and Conditions

5. Fig 4
EIT images during inadvertently misplaced double lumen tube in the wrong main bronchus and after correction of tube position. Upper row: distribution of ventilation during left OLV (a) and right OLV (b) before control of tube position by FOB; lower row (c and d): distribution of ventilation after FOB-guided correction of tube position. During left and right OLV, the percentage of ventilation distributed to the respective lungs is listed in brackets.
British Journal of Anaesthesia  , DOI: ( /bja/aen166)
Copyright © 2008 British Journal of Anaesthesia Terms and Conditions

6. Fig 5
EIT images during tracheal dislocation of the bronchial tip of the DLT after turning the patient into the lateral position for surgery and after correction of tube position. Upper row: distribution of ventilation during left OLV (a) and right OLV (b) before control of tube position by FOB; lower row (c and d): distribution of ventilation after FOB-guided repositioning of the DLT. During left and right OLV, the percentage of ventilation distributed to the respective lung is listed in brackets.
British Journal of Anaesthesia  , DOI: ( /bja/aen166)
Copyright © 2008 British Journal of Anaesthesia Terms and Conditions