The Lymphatic system is an important part of the human body's defense system. It expels fluid and cells from the tissues through lymphatic channels, helping to maintain the body's immune function. However, when lymph nodes exhibit abnormalities, it may indicate the presence of disease or inflammation. In order to accurately evaluate the status of lymph nodes, medical ultrasound scanners have become a commonly used diagnostic tool. This article will introduce how to use a medical ultrasound scanner for lymph node examination.

1、 The principle and technical characteristics of medical ultrasound scanners

Medical ultrasound scanner is a non-invasive diagnostic tool that utilizes sound waves to propagate, reflect, and absorb within tissues to generate images. Its characteristics include:

1. High resolution: Ultrasound scanners can provide high-resolution images, enabling doctors to clearly observe the morphology and structure of lymph nodes.

2. Real time imaging: Ultrasound scanners can obtain images in real time, allowing doctors to observe the dynamic changes in lymph nodes, such as size, shape, and position.

3. Non invasive: Ultrasonic scanners use sound waves instead of radiation, without any damage or radiation risk to the human body.

4. Easy to operate: The operation of ultrasonic scanners is relatively simple, and doctors only need to place the probe in the examination area and operate it through the instrument's control panel.

2、 Steps and techniques for lymph node examination

1. Preparation and positioning:

Before conducting a lymph node examination, the doctor needs to inquire about the patient's medical history and symptoms in detail. Then, based on the patient's symptoms and signs, determine the location of the lymph nodes that need to be examined. Usually, areas such as the armpit, neck, and groin are common areas for lymph node examination.

2. Activate the device and set parameters:

Before starting an ultrasound scan, the doctor needs to activate the device and set the corresponding parameters. This includes selecting appropriate frequency, gain, and depth to ensure clear lymph node images are obtained.

3. Probe placement and scanning:

Place an appropriate probe in the inspection area, and apply an appropriate amount of gel to improve the sound wave transmission effect. The probe should gently touch the skin and maintain an appropriate angle and direction to ensure optimal image quality. Doctors can obtain different cross-sectional images by moving the position and angle of the probe, and comprehensively evaluate the morphology and structure of lymph nodes.

4. Observation and analysis of images:

Doctors need to observe and analyze the obtained ultrasound images. Normal lymph nodes usually present as elliptical and uniform structures, with no obvious abnormal echoes around them. However, abnormal lymph nodes may exhibit enlargement, irregularity, cystic changes, or abnormal echoes.

5. Record and report results:

Doctors should record the observed image results and write a detailed report, including the size, shape, echo characteristics, and abnormal findings of lymph nodes. This helps to provide accurate diagnosis and treatment recommendations.

3、 Application of medical ultrasound scanner in the diagnosis of lymph node diseases

1. Lymphadenitis:

Through ultrasound scanners, doctors can observe the size, morphology, and echogenic characteristics of lymph nodes to determine the presence of lymphadenitis. Inflammatory lymph nodes typically become enlarged, feverish, echogenic, and irregular.

2. Lymph node tumors:

Ultrasound scanners have high sensitivity in determining the presence of tumors within lymph nodes. The lymph nodes caused by tumors may exhibit mixed echo patterns, enlargement, and irregular morphology.

3. Lymph node metastasis:

In some cases, lymph nodes may become the site of metastasis for tumors in other areas. Ultrasound scanners can help doctors observe and evaluate possible lymph node metastases, guiding treatment strategies and evaluating prognosis.

Conclusion:

Medical ultrasound scanners play an important role in lymph node examination. By providing high-resolution, real-time imaging and non-invasive features, it can help doctors accurately assess the shape and structure of lymph nodes, and provide important reference for the diagnosis and treatment of Lymphatic system diseases. With the continuous progress of technology, medical ultrasound scanners are expected to further improve imaging quality and diagnostic accuracy, providing better support for the clinical application of lymph node examination.