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This study was performed to identify a safe method for filler injection to prevent blood vessel damage, by means of checking the location and depth of the blood vessels on the midline of the nose using Doppler ultrasonographic imaging. Ultrasonographic images of the nasal areas of patients for filler injection rhinoplasty were reviewed. The location and depth of the dorsal nasal arteries and the intercanthal vein in each part on the midline of the nose were checked. The intercanthal vein was detected in the midline of the radix in 22 pat