Related Experiment Video
Updated: Dec 1, 2025

Continuous Venous-Arterial Doppler Ultrasound During a Preload Challenge
Published on: January 20, 2023
Evaluation of facial artery course variations and depth by Doppler ultrasonography
Barış Ten1, Taylan Kara1, Tamer İrfan Kaya2
1Department of Radiology, Mersin University Faculty of Medicine, Mersin, Turkey.
Background:
As deep nasolabial folds (NLF) are associated with facial aging, there is an increasing demand for esthetic correction with filler injections. Understanding the anatomy of the angular artery (AA) and facial artery (FA) around the NLF region is essential for ensuring the safety of dermal filler injections into the NLF. The purpose of this study was to provide detailed vascular anatomical information on the course and depth of AA and FA around NLF using Doppler ultrasound on live cases.
Methods:
FA was observed from the origin level adjacent to the mandible corpus to the end of its terminal branch AA in 168 hemifaces of 84 cases with Doppler ultrasonography.
Results:
We made a classification of the FA course based on the NLF. The minimum and maximum depths of the FA along its course were measured in 84 cases. The results showed that its course may be highly superficial (2.5 mm at the mandibular origin, 3.7 mm at the cheilion, 3.7 mm at the nasal ala) or it may follow a very deep course near the periosteum (15.0 mm at the mandibular origin, 18.7 mm at the cheilion, 23.5 mm at the nasal ala). FA depth was varied between 5.98 mm and 6.62 mm at the mandibular origin, between 8.36 mm and 9.20 mm at the cheilion, between 9.52 mm and 10.51 mm at the nasal ala at a 95% confidence interval.
Conclusions:
This study suggests that there is no absolutely safe depth or region for nasolabial fold filler injections.
More Related Videos
Related Concept Videos
Assessing Blood pressure using a doppler ultrasound
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation
Assessment of apical radial pulse
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
Pre-Procedural Preparation
Imaging Studies II: Ultrasonography
Assessment of the Cardiovascular System III: Palpation
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above...

