High-frequency medical ultrasound boasts core advantages including non-invasive real-time imaging, zero ionizing radiation, convenient bedside operation, and high resolution for soft tissue imaging. It can clearly distinguish delicate soft tissue anatomical structures such as the epidermis, dermis, subcutaneous fat, SMAS fascia, superficial blood vessels, and tiny facial nerve branches, filling the subcutaneous blind spots that cannot be observed by naked eyes or manual palpation.
Mainstream high-frequency linear ultrasound probes commonly used in clinical practice (with a standard frequency range of 7–18 MHz) are suitable for superficial soft tissue imaging in medical aesthetics and boast remarkable clinical application value, covering the entire workflow of preoperative assessment, intraoperative guidance and postoperative review:
u Preoperative imaging evaluation
Accurately measure the thickness of each layer including the skin, subcutaneous fat, fascia and muscles; distinguish true puffy eyes from pseudo soft tissue bulging; identify abnormal tissues such as unknown residual materials from previous injections and subcutaneous cystic nodules.
u Intraoperative real-time guidance
Dynamically display the course of superficial facial arteries and veins to assist physicians in avoiding blood vessels during puncture; real-time track the depth of needle insertion to fundamentally eliminate the risk of vascular embolism caused by injectables entering the bloodstream.
u Postoperative follow-up monitoring
Screen for delayed subcutaneous hematoma and filler displacement, continuously monitor local inflammatory responses, and promptly identify postoperative complications.
Frontal region (forehead)
Common Forehead Issues: Horizontal forehead lines, transverse lines above glabellar lines, flat depressions, acne scars
Medical Aesthetics Precautions: The supraorbital vascular plexus and supratrochlear vascular plexus are absolute avoidance zones for all injection, dissection and energy-based treatments on the forehead.
Applicable Projects for Palm Ultrasound:
u Dynamic horizontal forehead lines: Inject botulinum toxin under ultrasound guidance while avoiding the supraorbital vascular plexus, extensions of the supratrochlear vascular plexus, nerves and areas where the agent may easily diffuse to non-target muscles to improve dynamic horizontal forehead lines
Glabellar area (glabellar lines)
Common glabellar issues: deep glabellar lines, sunken furrows and static wrinkles caused by frowning
Medical Aesthetics Precautions:There are two neurovascular foramen, the supraorbital foramen and supratrochlear foramen, plus abundant anastomotic branches of blood vessels along the frontal midline. This area is an absolute avoidance zone for all injections, dissections and energy-based therapies on the frontal region.
Projects suitable for palm ultrasound guidance:
u Mild dynamic wrinkles: Under ultrasound guidance, precisely inject botulinum toxin while avoiding the supraorbital vascular plexus and the extension of supratrochlear artery to improve mild dynamic wrinkles.
u Moderate to severe static depressions: Under ultrasound guidance, combine botulinum toxin with hyaluronic acid filler, or adopt autologous fat grafting to improve moderate to severe static depressions.
