Study on Safe Filler Injection Techniques Using Cutting-Edge Ultrasound Technology

BACKGROUNDRecently, the development of an ultrasound device connected to a finger probe has enabled real-time ultrasound-guided filler injection. We aimed to evaluate the feasibility, clinical applicability, and patient satisfaction associated with the use of a novel real-time finger-held Doppler ultrasound system as a guide for hyaluronic acid filler injection.

METHODSThe SIBUS-IN probe was attached to the fourth finger of the left hand, and hyaluronic acid filler was injected with the right hand.

RESULTSA total of 33 patients underwent treatment for nasolabial folds, with an average injection of 0.98 mL (0.5–2) of Lorient No. 4 hyaluronic acid filler on the left side and 0.95 mL (0.5–1.5) of the same hyaluronic acid filler on the right side. Two weeks posttreatment, 22 out of 33 patients responded “very satisfied,” while 11 patients responded “satisfied.” All patients reported satisfactory results, with a mean satisfaction score of 2.67. No vascular complications were reported.

CONCLUSIONSThe finger-held Doppler ultrasound system (SIBUS-IN) enabled real-time visualization of vascular structures during hyaluronic acid filler injection and was feasible for clinical use in nasolabial fold correction. In this limited observational cohort, the technique was well tolerated and not associated with immediate adverse events. However, the present study was not designed to demonstrate safety superiority or complication prevention; controlled comparative studies are required to determine whether this approach offers measurable advantages in safety or outcomes over conventional injection techniques.

LEVEL OF EVIDENCE STATEMENTLevel III.

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