RA Area
< 19 cm2
≥ 19 – ≤ 22 cm2
> 22 – ≤ 24 cm2
> 24 cm2
Indexed Volume
< 33 mL/m2
≥ 33 – ≤ 38 mL/m2
> 39 – ≤ 44 mL/m2
> 44 mL/m2