Ultrasound machines serve a wide range of needs, and as technology has progressed, these systems have become more common with point of care services. They have also become incredibly popular with expectant parents. The best ultrasound machine for pregnancy doesn’t require a bulky cart-based machine, and they are a fantastic way to alleviate concerns from new parents.
What to Consider When Choosing Pregnancy Ultrasound Equipment
Portable ultrasound machines for pregnancy come in a variety of styles, which can make choosing the right model challenging. Whether you need a point-of-care system for an obstetrics clinic or a home ultrasound machine for pregnancy, here are key areas to consider.
Probes
There are only three types of probes used on portable ultrasound systems for pregnancy: Linear, Curved/Convex, and Phased. While there are a number of scanners that utilize both types of transducers, the type of probe has an impact on imaging and field of view.
- Curved Probes: Curved or convex probes have a wider field of view and generally operate at a lower frequency. They are ideal for deep penetration and abdominal scans. They produce a wider image due to the fan-shaped wave pattern.
- Linear Probes: A Linear probe runs at a higher frequency and is better suited for shallow scans just below the skin. They produce ultrasound waves in parallel lines with a narrower field of view compared to a curved transducer.
Phased Probes aren’t as prevalent as curved or linear probes but provide the best of both worlds for a more precise approach. Some probes are wired, but many portable ultrasound machines are cordless and allow users to connect a smartphone or tablet to the system.
Ultrasound Machine Modes
Once you have an understanding of the type of probe you need, it’s time to consider modes. Every portable ultrasound machine has imaging modes, which affect how information from the machine is seen by the viewer.
B-mode is the most common mode on any ultrasound machine, especially systems used in obstetrics. Brightness mode gives users a 2D scan using ultrasound waves, while M-mode deals with internal motion and blood flow.
Color Doppler (CDI) is a mode generally reserved for premium ultrasound machines. It allows users to visualize blood flow within an area, and there are different types of Doppler. Power Doppler (PDI) deals with the strength of blood flow, while Pulsed Wave Doppler or PWD uses short pulses to measure lower velocities.
Battery Life
Battery life is easy to overlook with an ultrasound machine for pregnancy. It’s not an issue with traditional models, but something that can quickly bring an exam to an end. We found that most handheld ultrasound machines have a scanning time between 1 to 4 hours on average.
It’s also important to note that battery life is impacted by the type of scan. Color Doppler scans will use more power than a simple B-mode scan. Charging times vary wildly, although quick-charge capabilities can trim those numbers down significantly.
Warranty
Ultrasound machines aren’t considered budget-friendly devices, so a good warranty is important. Some companies provide extended service plans, which are well worth the cost given the price of an ultrasound scanner.
Even if a company has a solid warranty for their scanner, you’ll want to make sure they have good tech support or customer service. While we feel many handheld ultrasound machines for pregnancy are easy to use, great support should be a key requirement with a POCUS system.