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Fig. 2. Before and after rupture-free balloon (RFB) inflation. (A) Ultrasonography (US) before the RFB inflation. (B) After the RFB inflation. US reveals that the inflated RFB placed in the cervical esophagus, which displaces the vessels (carotid artery and internal jugular vein) laterally and the thyroid medially, is detected just under the skin. 1, esophagus; 2, thyroid gland; 3, trachea; 4, carotid artery; 5, jugular vein; 6, RFB.
Int J Gastrointest Interv 2021;10:49~53 https://doi.org/10.18528/ijgii210003
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