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FUS 2.2 Probe types

PROBE SHAPE:

When making a purchase of an ultrasound probe, you also need to be aware of the shape of the probe and the size of its footprint.

There are three general categories of ultrasound probes:

Linear Probe: Linear probes have a straight array providing high-resolution, rectangular-shaped images. They have a higher frequency range (5-25 MHz) and are primarily used for imaging superficial structures. Is the ideal shape for facial aesthetics. The instructors at Learn the Face Education do not recommend any ultrasound probe which is not linear for use within facial aesthetics.

You will also encounter to other shapes of probes, these should be avoided when considering use for facial aesthetics.

Curvilinear Probe: Also known as convex or sector probes, curvilinear probes have a curved or convex-shaped array, which creates a triangular-shaped image. They have a lower frequency range (2-12 MHz), allowing deeper penetration into the body but with lower image resolution. They are commonly used for imaging deeper structures and larger organs, as well as for obstetric and gynecological examinations. This course commonly encountered ultrasound probe used within medicine.

Phased Array Probe: These probes have a small footprint with an array arranged in a triangular or wedge-shaped pattern. These probes offer a wide field of view and can operate at various frequencies (2-13 MHz). They are used primarily in cardiac imaging, where their small size allows for better access between the ribs and imaging of the heart.

[image of probe types]

PROBE FOOTPRINT

You must also consider the footprint size of the probe itself. This is the surface area of the probing contact with the skin.

This is important in medical aesthetics due to the fact that we image structures which are relatively small and curved in shape, think of the nose, lips, cheekbones, or chin etc. If the footprint is too large is very difficult to place the probe flush with the skin when imaging these smaller areas. This can result in distorted images or not fully utilizing the ultrasound probe to generate an image.

However, there are some advantages to a larger footprint. A probe with a larger footprint can visualize a larger area of the face simultaneously. This is particularly useful when performing ultrasound-guided injections, and the needle or cannula used needs to be directed towards the target directly under ultrasound guidance.

Ultimately, the footprint size of the program is a personal preference.

Under ideal circumstances, the instructors at Learn the Face Education recommend two probes, one with a footprint of under 3 cm, and another larger footprint probe with a footprint of over 4 cm. In their clinical practice, they use both sizes depending on the area being imaged and on the needs required for any ultrasound-guided procedures.

However, if one is to only purchase one probe, either footprint sizes can be utilized successfully, albeit with some limitations and modifications.

[probe footprint images x 2 images]