Which artifact may be caused by incorrect color Dopplergain setting?

Which artifact may be caused by incorrect color Dopplergain setting?
A . Bleed/Blossoming
B . Clutter/Haze
C . Twinkle
D . Aliasing

Answer: A

Explanation:

Incorrect color Doppler gain settings can cause the artifact known as bleed or blossoming. When the color Doppler gain is set too high, it can cause the color signal to "bleed" outside the actual boundaries of the blood vessel, leading to an overestimation of the area of flow. This artifact makes it appear as though the blood flow extends beyond the true vessel walls, which can obscure the accurate interpretation of the Doppler image.

Reference: ARDMS Sonography Principles and Instrumentation (SPI) Exam Study Guide "Diagnostic Ultrasound: Principles and Instruments" by Frederick W. Kremkau