Normal renal cortex thickness is greater than what value?

Normal renal cortex thickness is greater than what value?

• A. 0.5 cm
• B. 0.8 cm
• C. 1.0 cm
• D. >1 cm

Answer: (D)

Cortical thickness reflects preserved renal parenchyma on ultrasound. In a normal adult, the renal cortex is a distinct outer layer that measures about 1 cm or more in thickness. When you measure, place the calipers from the outer border of the cortex to the corticomedullary junction, perpendicular to the cortex, usually at the mid-pole in a sagittal view. If the cortex is thicker than 1 cm, that is within normal limits. If it’s thinner, cortical thinning suggests nephron loss or chronic parenchymal disease. The standard practical threshold used is greater than 1 cm, making that value the best choice.

Cortical thickness reflects preserved renal parenchyma on ultrasound. In a normal adult, the renal cortex is a distinct outer layer that measures about 1 cm or more in thickness. When you measure, place the calipers from the outer border of the cortex to the corticomedullary junction, perpendicular to the cortex, usually at the mid-pole in a sagittal view. If the cortex is thicker than 1 cm, that is within normal limits. If it’s thinner, cortical thinning suggests nephron loss or chronic parenchymal disease. The standard practical threshold used is greater than 1 cm, making that value the best choice.