An ultrasound scanner is a commonly used medical device that can be used to diagnose and treat a variety of diseases. When it comes to lymph node examination, ultrasound scanners can provide a non-invasive, non-radiation test that can help determine if lymph nodes are abnormal and help doctors develop an appropriate treatment plan.

1. Anatomy and physiology of lymph nodes

Lymph nodes are a kind of immune organ in the body, distributed in various parts of the body, the main function is to filter and remove substances in the tissue fluid, prevent pathogens from entering the body. Lymph nodes are enclosed by connective tissue and contain lymph fluid, also called lymph glands. There are also a large number of lymphocytes inside the lymph nodes, including B cells, T cells and so on. When the body is attacked by infection or disease, lymph nodes mount an immune response to defend against foreign pathogens, and may also develop abnormal growths or metastases due to disease.

Second, the application of ultrasonic scanner in lymph node examination

The location and size of lymph nodes were detected

Ultrasound scanners use high-frequency sound waves to create images that clearly show the location, size and shape of the lymph nodes. This is important for determining if the lymph nodes are abnormal and can help doctors provide a more accurate diagnosis.

The internal structure of the lymph nodes was evaluated

In addition to the appearance of size and shape, ultrasound can also assess the internal structure of the lymph nodes, including blood flow inside the lymph nodes, whether there is calcification, etc. This information can help doctors determine if there is an infection, inflammation or tumor in the lymph nodes.

Determine the texture of the lymph nodes

During an ultrasound, the doctor can tell if the lymph nodes are abnormal based on their texture. Normal lymph nodes are usually soft and elastic, while abnormal lymph nodes may be firm, hard, and uncompressible due to infection or other disease.

The therapeutic effect of lymph node was monitored

Ultrasound scanners can be used to monitor the effect of lymph node treatment. For example, in the treatment of lymph node inflammation or tumor, doctors can use ultrasound to observe the changes in the lymph node and assess whether the treatment effect is good.

Precautions for lymph node examination

When performing lymph node examination, the following points need to be noted:

You should inform your doctor of your allergy history and medication use before the test to avoid allergic reactions or interference with the test results.

Lymph nodes are located at multiple sites, and the examination methods and operations at different sites may be different. Therefore, appropriate examination methods should be selected according to specific conditions.