What question did this study set out to answer?

To assess the dimensions of liver segment 4 (the quadrate lobe) using ultrasonography in patients with cirrhosis compared to healthy controls.

January 1, 1998Radiology

Segment 4 (the quadrate lobe): a barometer of cirrhotic liver disease at US.

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Comparative study reveals reduced liver segment 4 diameter in cirrhosis, suggesting its utility as an ultrasound sign of chronic liver disease.

To assess the dimensions of liver segment 4 (the quadrate lobe) using ultrasonography in patients with cirrhosis compared to healthy controls.
Measured the transverse diameter of segment 4 on oblique subcostal ultrasonography scans in 167 patients with cirrhosis and 125 control subjects without liver disease.
Identified measurement boundaries from the left wall of the gallbladder (or main fissure post-cholecystectomy) to the ascending or umbilical portion of the left portal vein at the origin of the segment 4 branch.
The mean diameter of segment 4 was 28 mm ± 9 in patients with cirrhosis compared to 43 mm ± 8 in control subjects.
Neither the underlying etiology nor the severity of cirrhosis significantly influenced the transverse diameter of segment 4.

Lafortune et al. (1998) studied this question.

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Comparative study reveals reduced liver segment 4 diameter in cirrhosis, suggesting its utility as an ultrasound sign of chronic liver disease.