The Value of Contrast-Enhanced Ultrasound-Guided Contrast Injection via the Endoscopic Nasobiliary Drainage Duct in Diagnosing Residual Common Bile Duct Stones

<div>(a) US could only demonstrate the upper part of the CBD before saline injection. (b) The CBD were completely demonstrated after saline injection and two hyperechoic masses were found at the end of the CBD. (c) Two tawny stones were detected by ERCP.</div>

BioMed Research International

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Figure 1

Figure 1: The Value of Contrast-Enhanced Ultrasound-Guided Contrast Injection via the Endoscopic Nasobiliary Drainage Duct in Diagnosing Residual Common Bile Duct Stones 

Figure 1 | The Value of Contrast-Enhanced Ultrasound-Guided Contrast Injection via the Endoscopic Nasobiliary Drainage Duct in Diagnosing Residual Common Bile Duct Stones 