What technique is recommended to visualize the liver during laparoscopy?

What technique is recommended to visualize the liver during laparoscopy?

• A. Use angled scope; look for macronodularity associated with cirrhosis; ultrasound can be used
• B. Use straight scope only
• C. Visualize the liver by external palpation
• D. Use fluorescence imaging

Answer: (D)

Visualizing the liver during laparoscopy is best accomplished with fluorescence imaging, specifically using near-infrared indocyanine green. After injection, the dye circulates and is excreted into bile, so the laparoscopic camera with NIR capability highlights perfused liver tissue and biliary structures in real time. This provides enhanced contrast of vessels, liver parenchyma, and ducts, helping to delineate segments, assess perfusion before dissection, and identify critical structures that might be hidden. Other methods like adjusting scope angle or external palpation don’t give the same immediate, surface-focused visualization, though ultrasound can help with deeper structures. Fluorescence imaging offers the most direct, real-time visualization for safe liver work during laparoscopy.

Visualizing the liver during laparoscopy is best accomplished with fluorescence imaging, specifically using near-infrared indocyanine green. After injection, the dye circulates and is excreted into bile, so the laparoscopic camera with NIR capability highlights perfused liver tissue and biliary structures in real time. This provides enhanced contrast of vessels, liver parenchyma, and ducts, helping to delineate segments, assess perfusion before dissection, and identify critical structures that might be hidden. Other methods like adjusting scope angle or external palpation don’t give the same immediate, surface-focused visualization, though ultrasound can help with deeper structures. Fluorescence imaging offers the most direct, real-time visualization for safe liver work during laparoscopy.