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How to judge the quality of an ultrasound machine through its parameters
Release time:
2025-03-12 09:37
Ultrasound is a commonly used medical diagnostic method that has emerged in recent years. Due to its painless, non-invasive, highly repeatable nature and relatively low cost, it is widely welcomed by doctors and patients and is extensively used in medical diagnosis. Compared to other diagnostic methods such as CT scans, ultrasound does not involve radiation, so it is also often used for pregnancy testing. It can be said that ultrasound machines are indispensable instruments in almost every hospital.
In recent years, the number of ultrasound machine manufacturers in China, both large and small, has been increasing. Coupled with imported brands, the choices of ultrasound machine products have become increasingly abundant, and the prices of various types and models of ultrasound machines vary greatly. To judge the quality of an ultrasound machine, several parameters need to be analyzed.
I. Black and White Ultrasound
1. Grayscale of the Ultrasound Machine
To judge the quality of an ultrasound machine, the first thing to look at is its grayscale. Grayscale refers to the levels of brightness from darkest to brightest. A higher grayscale value means more levels, resulting in a more detailed image. Early ultrasound machines generally had 16-64 grayscale levels, while modern ultrasound machines mostly have 256 grayscale levels.
2. Resolution of the Ultrasound Machine
Resolution is a parameter related to the precision of the screen image, representing the number of pixels the display can show. The higher the screen precision, the more refined the image. The resolution of an ultrasound machine needs to be tested using a specialized module, although experienced ultrasound doctors can also judge it directly with the naked eye.
3. Functions of the Ultrasound Machine
Ultrasound machines have diverse functions. A good ultrasound machine generally needs to have the following functions: M-mode, Doppler function, multiple measurement capabilities (distance, area, perimeter, volume), multi-image storage, multi-segment STC free control, dynamic focusing, capability to use broadband transducers, frequency conversion, etc.
4. Transducers of the Ultrasound Machine
Ultrasound machines have various transducers, each suitable for different types of diagnosis. The ultrasound machine should be able to use various transducers, such as common transducers: cardiac transducers, esophageal transducers, vaginal transducers, abdominal transducers, intraoperative transducers, high-frequency transducers, etc.
5. Image Processing
Black and white reversal, image edge processing, smoothing, Y correction, etc.
II. Color Ultrasound
1. Image Quality
Excellent two-dimensional black and white images, color images with uniform color and no blocky feeling.
2. Full Digital Frequency Conversion Technology
Refers to the complete digitization of ultrasound transmission, reception, and delay.
3. Second Harmonic Imaging Technology
Uses contrast agents to enhance blood vessel imaging.
4. Three-Dimensional Angiographic Technology
Uses a computer for three-dimensional reconstruction.
5. Rich Calculation Functions
Obstetrics software package, cardiology software package, urology software package, etc.
Of course, ultrasound imaging is a result of multiple factors. On the one hand, the ultrasound machine itself must be configured to meet the diagnostic requirements. On the other hand, the operator needs to be skilled and able to analyze the images.
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