Question

You are performing the PISA method of mitral regurgitation assessment on a transthoracic echo. After optimizing the color flow of the MR jet, which of the following console adjustments should be made before freezing the image?

A) Shift the color baseline up to between 20-40 cm/s to allow aliasing
B) Switch to a variance color map before freezing the image
C) Shift the color baseline down to between 20-40 cm/s to allow aliasing
D) Increase the power output setting to increase aliasing

Answer 1

Before freezing the image for the PISA method of mitral regurgitation assessment, shift the color baseline up to between 20-40 cm/s to allow aliasing.

Step-by-step explanation:

When performing the PISA method of mitral regurgitation assessment on a transthoracic echo, before freezing the image, one should shift the color baseline up to between 20-40 cm/s to allow aliasing. This adjustment is made to ensure that the velocity of the regurgitant flow is accurately captured within the limits of the machine's settings, allowing for proper assessment of the severity of regurgitation. The color flow map uses varying colors to denote different velocities, where higher velocities may appear in shades of red and lower velocities in blue, and aliasing helps in distinguishing the regurgitant jet from the surrounding blood flow.

Answer: A) Shift the color baseline up to between 20-40 cm/s to allow aliasing