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Atlas of Human Body Ultrasound Scanning_ Methods and Diagnostic Applications ( PDFDrive ).pdf
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8  The Digestive System Organ Scanning

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1.20\ Longitudinal Scanning of the Right Liver and Right Kidney from the Right Subcostal

Fig. 8.20  Longitudinal plane of the right liver and right kidney from the right subcostal

RL

RK

Ps

244

M. Zhang

 

 

1.20.1\ Scanning Method

The patient should be on fast for 8–12 h and in a supine position. Probe is placed in the right subcostal sagittally, about 1 cm from the right midclavicular line and perpendicular to the horizontal line. That patient keeps breathing in can make the liver move down to facilitate in obtaining the largest anteroposterior diameter of the right liver.

1.20.2\ Section Structure

Longitudinal section of the right hepatic lobe and right kidney. The right liver and right kidney fossae between the right posterior lobe of the liver and the upper pole of the right kidney.

1.20.3\ Measuring Method and Normal

Measuring the largest anteroposterior diameter of the right hepatic lobe from the top of the anterior capsule to the posterior capsule. Anteroposterior diameter should be less than 14 cm in the normal liver.

1.20.4\ The Clinical Application Value

(1) This is a standard section for measuring anteroposterior diameter of the right liver lobe. To observe the size, shape, and parenchyma

echogenicity of the right liver.(2) Because the liver and kidney fossae locates at the lowest area of the abdominal cavity, if effusion appears, it would be shown here the earliest in supine position. (3) Generally, the right liver visceral surface closes to the upper pole of the right the kidney. Retroperitoneal space-occupying lesions can increase the distance between the right liver and the kidney. (4) To be used to make a differential diagnosis among the liver, right kidney, and right retroperitoneal lesions. When the patient takes a deep breath, the lesion in the liver or in the kidney could move with the breath, but the lesions located at the retroperitoneal would not move.

1.20.5\ Notes

We think that the largest anteroposterior diameter measurement of the liver is very important in estimating the size of the right liver lobe because it can gave the real right liver size with a minimum error and can make up for the deficiency of the largest oblique diameter measurement. The normal anteroposterior diameter of the right liver is about 12–14 cm, > 14 cm for anomalies.