Mild MAC thickness falls into which range?

Mild MAC thickness falls into which range?

• A. 1.5-5 mm
• B. 0.5-1.5 mm
• C. 6-10 mm
• D. 10-15 mm

Answer: (A)

Mild MAC thickness is defined by a small amount of medial calcification that shows up as a limited, early deposit along the artery wall. The grading used in ultrasound assessment places mild MAC thickness in the 1.5 to 5 mm range. This distinguishes it from more extensive calcification, which would fall into higher ranges such as 5–10 mm for moderate or greater than 10 mm for severe. The 1.5–5 mm window reflects early calcification that stiffens the vessel but typically doesn’t correspond to the same degree of luminal narrowing seen with larger plaques.

Mild MAC thickness is defined by a small amount of medial calcification that shows up as a limited, early deposit along the artery wall. The grading used in ultrasound assessment places mild MAC thickness in the 1.5 to 5 mm range. This distinguishes it from more extensive calcification, which would fall into higher ranges such as 5–10 mm for moderate or greater than 10 mm for severe. The 1.5–5 mm window reflects early calcification that stiffens the vessel but typically doesn’t correspond to the same degree of luminal narrowing seen with larger plaques.