measurements

wall of GI tract

< 5mm

wall of GI tract is distended

< 3mm

valvulae

3 to 5 mm apart

variform appendix length

2 to 20cm

variform appendix diameter

< or = 6mm

variform appendix wall

< or = 2mm

haustral markings

3 to 5 cm apart

colon wall thickness

4 mm

distention considered adequate if stomach diameter is greater than

8 cm

entire halo of colon should measure

< 2cm

liver length

13-17.5 cm

liver AP

10-12.5 cm

liver trans

21-22.5 cm

CBD

less than or equal to 6mm

CHD

less than or equal to 4mm

GB trans

2.5-4 cm

GB length

7-10 cm

GB wall

less than 3mm

kidneys long

9-12 cm

kidneys trans

5cm

kidney cortical thickness

greater than 1.1 cm

kidney cortical measurement abnormally thin if

< 5mm

spleen length

less than or equal to 13 cm

spleen width

7cm

spleen height

4cm