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9 Wireless Ultrasound Transducer Types | How to Choose

Charles M. Carlsen

Published November 1, 2023
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You'll need the right equipment to get the most out of your ultrasound scanner.

As a result, the proper ultrasound transducer types are critical to the performance of your ultrasound.

This blog article will discuss the various ultrasound transducer types and the sorts of exams that may be performed.

Finally, we shall discuss some important aspects to consider while purchasing transducers.

1. What Is An Ultrasound Transducer?

One of the most widely used imaging technologies is ultrasound imaging. The ultrasonic transducer, often known as a probe, is the instrument that generates the ultrasound picture.

The transducer generates sound waves that bounce off biological tissues, creating echoes. The echoes are then received by the instrument and transmitted to a computer, which turns them into a picture known as a sonogram.

Ultrasound imaging is employed in various medical settings, including OB/GYN and surgical applications.

Furthermore, unlike other imaging modalities such as MRI and CT scans, ultrasound is not limited to an imaging suite and is radiation-free. As a result, although it has limits, ultrasonography provides medical imaging experts with a safe and rapid choice in some instances.

Each ultrasonic probe is designed for a unique imaging purpose; consequently, it is critical to grasp the differences between each kind and the advantages they provide.

2. Type Of Ultrasound Transducers

There are many different transducers present for ultrasonography. You need to be wise before choosing the right one. Today we will talk about ten different ultrasound transducers

• Transvaginal Probe.
• Convex Probe.
• Micro convex probe.
• Transesophageal Probe.
• Linear probe.
• Phased array.
• Pencil Probe.
• Linear + Convex
• Linear+ Transvaginal

(1) Transvaginal probe

No Required Membership home ultrasound machine
A transvaginal probe is used for vaginal area scanning. This probe has an antenna-like thing added to the transducer. This antenna will create the desired image.

A transvaginal ultrasound is a rapid and painless imaging technique that gives a more detailed image of your pelvic organs than a typical abdominal ultrasound. Your clinician may order this imaging treatment to investigate the source of your symptoms, diagnose a problem, monitor your pregnancy, or plan for surgery. It's one of the most popular and valuable diagnostic methods your doctor may use to help you.

These probes allow you to undertake interior exams on the patient. As a result, they are made to fit into certain bodily orifices.

Endovaginal, endorectal, and endocavity transducers are endocavitary transducers.

They typically have tiny footprints and frequencies ranging from 3.5Mhz to 11.5Mhz.

(2)Convex Probe

Internal built-in Wi-Fi signal image
Because of its curving piezoelectric crystal arrangement, convex ultrasonic transducers are also known as curved transducers.

Furthermore, the beam has a convex form. This sort of probe is ideal for thorough exams. However, as depth grows, the image resolution of the convex transducer drops.

Convex probes, like linear transducers, have different footprints, uses, and frequencies depending on whether they are used for 2D or 3D imaging.

The 2D imaging convex probe has a large footprint and a center frequency range of 2.5MHz to 7.5MHz. It's used for diagnosis, evaluation, and other ultrasound-guided treatments, including abdominal examinations.

The 3D imaging convex transducer has a center frequency ranging from 3.5MHz to 6.5MHz and offers a large field of vision.

(3)Micro Convex Probe

Micro Convex Probe image
Micro convex probes are a subclass of convex probes. These are substantially smaller and are typically found in neonatal and pediatric settings. The bandwidth of the micro convex transducer is 3.0 - 11.2 MHz. This is a fantastic probe for abdomen and essential heart imaging.

(4)Transesophageal Probe

Transesophageal Probe image
It is used for internal exams and has a tiny footprint. It's frequently used in cardiology to get a clearer view of the heart via the esophagus. The frequency lies in the center, between 3Mhz and 10Mhz.

(5)Linear Probe

Types Of Ultrasound Probes linear
The linear piezoelectric crystal arrangement is one of the essential characteristics of a linear ultrasonic transducer. The probe's beam is rectangular and provides good near-field resolution.

The site uses and frequency of the linear transducer may differ depending on whether it is used for 2D or 3D imaging.

The linear transducer for 2D imaging has a large footprint and a frequency range of 2.5Mhz to 12Mhz. This transducer has a wide range of applications, including:

• Vascular inspection
• Vein puncture
• Tendon Thyroid Breast
• Laparoscopy, intraoperative
• Ultrasonic velocity change imaging, photoacoustic imaging
• To determine the thickness of body fat
• Check for locomotive syndrome

The 3D imaging linear transducer also has a large footprint and a center frequency range of 7.5MHz to 11MHz.

They are an excellent choice for scanning body areas with a tiny surface area, such as the breast, thyroid, Arteria carotis of vascular application, and nerves, and are not deep into the tissue.

(6)Phased Array

Types Of Ultrasound Probes phased array
This transducer is named after the phased array piezoelectric crystal arrangement, the most widely used crystal.

Phased array probes have a tiny footprint and operate at low frequencies ranging from 2MHz to 7.5MHz. It features a limited beam point that grows based on the frequency used. Because of their tiny footprint and ability to evaluate a vast region without moving the transducer, they are a perfect choice for cardiac applications.

The beam geometry of phased array probes is approximately triangular, and the near-field resolution is weak. They are used for various tests, including abdominal, cardiac, and brain evaluations.

A fan-like picture is produced by phase array or sector ultrasonic probes. It is excellent for scanning tiny windows like the cranial window in the temple and cardiac imaging. The deep penetration of these transducers is excellent.

(7)Pencil Probe

Types Of Ultrasound pencil Probes
CW probes are another name for pencil probes. These probes monitor blood flow and sound speed in the blood.

This probe has a compact footprint and operates at low frequencies ranging from 2Mhz to 8Mhz.

(8)Linear + Convex

view ultrasound image on your phone
Now we are entering the dual head area. Dr.Sono Tri-Scan Max do two jobs with one transducer. The first one is the linear transducer. And the second one is the convex transducer.

If you want to do vascular imaging and center line place, you can use the linear probe.

On the other hand, a convex probe works great on the abdomen area, so if you want the image in that particular area, you can use the convex probe.

(9)Convex + Transvaginal

Highly Cost-Effective Integrated two probes
Convex probes (also known as curved linear probes) contain a curved array that provides a broader field of vision while operating at a lower frequency. Because of their greater depth and penetration, convex probes are usually employed for abdominal imaging.

A transvaginal ultrasound can detect abnormal formations or growths in your pelvic area, which may be indicative of a problem or disease. A transvaginal ultrasound may also be ordered by your clinician to confirm or monitor your pregnancy.

If you need both of these probes in a single transducer, you are welcome to use the convex+ transvaginal probe.

3. How To Choose The Best Wireless Ultrasound Scanner Type For You?

You should now be familiar with the most popular types of ultrasonic transducers. And here are a few pointers to keep in mind when shopping for ultrasonic transducers:

1.Budget.
2.Application.
3.Expectation.

(1)Budget

Setting a budget is an excellent way to limit your options and locate the best solution for you.

Although there are deals to be gained, such as with ex-demonstration models, as with any purchases, you usually get what you pay for.

A return-on-investment calculation can be used to determine the budget you are willing to give your transducer.

Speaking with providers is an excellent approach to determining what budget is feasible and achievable. This might assist you in developing a business strategy for a new system.

You can not just barge in and buy one transducer because transducers are not cheap at all.

I am not telling you to just go for the lower-priced ones.

You need to figure out what you want in the first place. You must take the time to extend your budget and get yourself a good ultrasound scanner for your near future uses.

(2)Application:

This is the most important part of your purchase. You need to be aware of what you are buying and what will be the purpose of your scanner. If you buy the wrong one, you are going to regret it for a long time.

This is the list I have made so that you can have a clear idea about which one you should buy based on the area you will be examining.

(3)General Imaging

For general imaging, you can choose from Convex, Linear, Endo cavity, and Phased array. But you can not use a pencil probe for general use.

(4)Cardiac

Transesophageal Probe, Phased array, and Pencil will be a very good choice for cardiac ultrasound scanning. But you must not buy Linear or Convex for cardiac testing.

(5)Vascular

You can never use Endo cavity or phased array type for vascular. Except that you can use all other transducers for vascular scanning.

(6) OB/GYN

A transvaginal ultrasound scan has a specialty for this type of scanning. If you are a gynecologist, you can always go for an endocavity or transvaginal ultrasound scanner.

Besides, the transvaginal convex probe can sometimes be used for OB/GYN scanning.

(7)Expectation:

People's expectations of ultrasonography might vary greatly; yeah, they all do the same thing, but that's like saying the iPad and the Hudl are the same things. Both provide comparable functionality, but one will do it faster, more effectively, and with far more features and accessibility.

At the end of the day, you cannot get your wireless scan to work as well as the big ones. You have to pay some costs for your convenience, whether with money or quality.

If you are buying a 1000 USD machine, it will not work as well as a 5000 USD machine. So, we need to be realistic about what to expect.

So, we can sum up by saying that you must keep an affordable budget and, in this budget, you must choose the appropriate machine.

In that machine, you must not expect something out of the world. You will get what you deserve.

So, I can recommend a super affordable ultrasound wireless scanner that will meet all your expectations, needs, and budget.

(8) Dr.Sono 3 in 1 Portable Ultrasound Scanner

This is an all-rounder ultrasound device you must have a look at. This ultrasound device has a dual head, meaning each head is working as an individual transducer.

With this ultrasound scanner, you can do the job of three different types of the ultrasound scanner. It has three modes.

• Linear
• Convex
• Phased Array

The linear probe will take care of the general imaging and vascular imaging.

The convex probe can detect problems in OB/GYN, the vascular and abdominal area with its wide range of areas.

The phased array probe will work for both General and Cardiac scanning. So you can check out all your internal organs only with one tiny device.

This ultrasound scanner is very light in weight. So you can keep it in your pocket and roam around. This is also very much compatible with iPhone, Android, and Windows. So, you can easily connect it via Wifi.

This is a kind one solution for all types of devices.

Let's check out its specifications.

Specifications:
Scan mode : Electronic array
Elements : 192
Frequency : Convex 3.5-5 MHz // Linear 7.5-10MHZ
Definition : Crystal clear
Display mode : B, B/M, Color, PW,PDI
Scan Depth : Convex:90mm-305mm//Linear:20mm-100mm
Battery working time : 3 hours
Weight : 8.8 oz | 250 g
Image frame rate : 18 f/s
Head length / Radius : Convex:60mm//Linear:40mm
Scanning Angle Convex : 60 °//Phased
Array : 80°
Image Save : jpg, avi, and DICOM

I know it is not easy to buy such an expensive item without having any proper knowledge of it. You must learn more and more about the product you are going to buy. Considering all your requirements, I will definitely recommend you to buy the Dr.Sono Dual Head Premium Ultrasound scanner. For only 3699 USD, you can get everything you need in an ultrasound transducer.

You can even get a one year warranty and free shipping in your place.

So don't be late, contact DrSono for your order 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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