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How does a Portable Ultrasound Scanner Work?

Charles M. Carlsen

Published April 23, 2024
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Have you ever wondered how they see the baby inside the mother's womb?

The answer is sound!


I was also when I first heard about the technology.

Sound is not limited to our hearing ability. It covers an extensive range of frequencies. We can only hear from 20Hz to 20000Hz. Below or beyond that level, we don't hear anything.

That doesn't mean sound exists only in these frequencies.

Below 20 Hz, we get infrasound. And beyond 20000 Hz, we get an ultrasound.

Ultrasonography is the imaging technology we use to see the inside of a body.

Today we will talk about the machine that lets us painlessly see through internal organs and detect undetectable errors in our system. Usually, ultrasound scanners come in both wired and wireless forms. The devices are a bit different in both processes. But the working principle and essential equipment are pretty similar.

1. Components

1. Transducer Probe: Machine that sends and receives ultrasound signals.

2. CPU: Receives signals from the transducer and converts them into electrical signals.

3. Monitor: Shows the output of the test.

For a wired Ultrasound Scanner, there are complex machine accessories. You only need your smartphone or intelligent pad as a CPU, monitor, etc.

And a portable transducer probe.

2. How Does It Work

The working principle is relatively easy. The transducer probe sends sound waves from 1MHz to 5 MHz to the patient's body.

The sound waves penetrate the skin and go deeper into parts of the body. When it hits thick layers of tissue or bone, the sound waves reflect from that area.

The transducer probe receives the reflected sound waves in the form of echoes. The echoes are responsible for creating the image.

They generate electrical signals.

The CPU considers the whole phenomenon and creates an image of the examined area.

A liquid gel is applied to the examination area to move the transducer smoothly.

3. Difference Between Wired And Wireless

A wired ultrasound scanner is a massive setup. It uses a direct-wired connection and does its job. Many pieces of machinery like CPU, Monitor, etc., need to be installed.

Wireless connection is quite handy and straightforward. All you need is an iPhone iPad or Android as CPU, Monitor, application, etc., all in one and a portable wireless transducer with wifi facilities.

You must connect your transducer to the intelligent device via wifi and open the application. You can check your body with a portable ultrasound transducer anytime you want.

4. Uses

1. Evaluation of pain, swelling, and infection
2. General examination of body parts like
● Heart.
● Blood vessels.
● Liver.
● Gallbladder.
● Kidneys.
● Uterus.
● Testicles.
● Thyroid.
● Pancreas.
● Womb for pregnant women.

1. Guide procedures like
● Needle biopsies.
● Biopsy of breast cancer.
● Echocardiogram.

1. Blood Flow blockage detection.
2. Tumour cell detection
3. Absent or low blood flow detection.
4. Infection detection.


Rather than using sound, ultrasonography works on sound. Sound does not harm human skin or internal organs. The sound wave goes in and echoes out.

A new milestone for patient experience:
Ultrasonography was a hectic job. You have to move the patient to the ultrasound room. It takes ages to complete all the processes. And a professional must be present all the time.

With wireless technology, you can do ultrasound examinations without the help of big machines.

All you need is an intelligent device and Dr Sonos transducer.

No patient has to go through the hassles of doing so much work.

Low cost:
A wireless machine is far less expensive than a traditional ultrasound scanner. You can buy 4 or 5 wireless probes for the price of one wired ultrasound scanner.

A lifesaver during emergencies:
No, endanger—control emergencies. Sometimes immediate detection is needed to diagnose critical patients. If the ultrasound room is occupied, patients' lives can be in danger during that time.

A portable transducer saves time and effort for patients and saves many, many lives.

Increased patient engagement:
Every time we checked up on our body with a regular wired ultrasound scanner, we had to be guided by an expert.

Nowadays, patients can efficiently run tests on themselves quite easily.

All they need is the transducer and intelligent device application.

It changed the way people used to view ultrasound machines. Thus making it more trustworthy and likable to the consumers.

Accessibility :
The availability of portable hospital devices reduces the need for doctors to refer patients to other facilities for ultrasound imaging.

Doctors can give their patients focused attention and accurate diagnoses by offering ultrasound imaging at their clinics.

The ability to conduct examinations at the desired location, whether a clinic or the patient's home, benefits both medical staff and patients, a boon in today's fast-paced world.

Variety in functions
Portable ultrasounds have superior image quality for high-contrast resolution and optimization, and they can be used for 2D, 3D, or 4D imaging. Furthermore, they provide a comprehensive set of functions and designs that offer a streamlined and improved workflow, enhancing the ease of operation and speed. They also have a color display and power batteries for long-term use.

 Furthermore, these machines are incredibly user-friendly and can transfer images from one device to another. These usually consist of a set of transducers and measurement and reporting software.

6. Disadvantages

Sensitivity :
Portable ultrasound scanners are very much sensitive to the presence of electrical equipment.

Very few probes can work perfectly under these circumstances.

Biohazard :
Possibility of biohazard. While the transducer is simple to clean, smartphones and tablets are not intended for clinical use. They may be more challenging to disinfect than standard ultrasound machines designed with biosecurity.

7. Conclusion

Portable ultrasound equipment has improved as a result of advancements in ultrasound technology. As a result, portable ultrasounds can now provide high-quality imaging that was previously only available in bulkier devices. Furthermore, the size of ultrasound machines is decreasing, from laptop-based ultrasound machines to various handheld scanners.

Portable ultrasounds have superior image quality for high-contrast resolution and image optimization, and they can be used for 2D, 3D, or 4D imaging. Furthermore, they provide a comprehensive set of functions and designs that simplify and optimize workflow, improving ease of use and speed. They also have a color display and power batteries for continuous use.

Additionally, these machines are simple to use and can transfer images from one device to another. Typically, these consist of a set of transducers as well as measurement and reporting software.

A wireless transducer is a revolutionary product in medical science.

If we can find some way to eradicate the negligible risks in using ultrasound scanners, we can get maximum output from it.

So what are you waiting for to get your best product from Dr Sono now?
Article by
Charles M. Carlsen
Hello! I'm Charles, As co-founder of Drsono, I contribute to the DRSONO blog, providing valuable insights and up-to-date information on ultrasound technology and diagnostic imaging.

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