1. Transesophageal Echocardiography in an Operation for Pulmonary Arteriovenous Malformation 
Aubrey A Almeida, Helen L Thomson, Darryl J Burstow, Robert K.W Tam 
The Annals of Thoracic Surgery 
Volume 65, Issue 1, Pages (January 1998)
DOI: /S (97)

2. Fig. 1
Preligation transesophageal echocardiogram demonstrating microbubbles in the right atrium (A), and then appearing in the left atrium three cardiac cycles later (B). (LA = left atrium; RA = right atrium; LV = left ventricle; RV = right ventricle.)
The Annals of Thoracic Surgery  , DOI: ( /S (97) )

3. Fig. 2
Postligation transesophageal echocardiogram three cardiac cycles after contrast injection demonstrating elimination of shunt.
The Annals of Thoracic Surgery  , DOI: ( /S (97) )