Sonographic measurements - wikiRadiography

Abdomen Normal Measurements - wikiRadiography - A free website for Radiographers, Sonographers and students

http://www.wikiradiography.com/page/Abdomen+Normal+Measurements

Normal sonographic measurements for the abdomen

Adrenal

4-6mm
Thickness 2-4mm
Width 2-3mm

Aorta

The maximum AP outer wall diameter is the preferred measurement for assessment of
aortic size
Avoid transverse measurements if there is side to side tortuosity
Total length of aneurysm measurements are of no use clinically and should not be quoted as this can lead to confusion with the AP diameter
Aneurysm > 3.0cm
Appendix
Abnormal: Outer diameter ≥ 6mm, non compressible

Gall Bladder
Width abnormal if > 4 cm
Wall Thickness: abnormal > 3 mm

Bile Duct
Normal ≤ 6mm
Useful rule of thumb: bile duct caliber increases 1mm with each decade, i.e. 6mm at 60yrs, 7mm at 70 yrs etc.
Post cholecystectomy: 6-10mm indeterminate

Kidney Length
Normal Range: lower 9-10cm, upper 12-13 cm, variable depending on body size
Left usually longer than right, difference <1.5cm

Liver
Mid hepatic line> 15.5cm enlarged in 75%
Portal Vein < 1.3 cm, > 20% change in caliber with respiration
Splenic Vein /SMV > 20% change in caliber with respiration
Pancreas AP Diameter
Head 1.9 - 2.5 cm
Body1.5 – 2.1 cm
Tail 1.0- 2.0

Spleen
Normal Length < 13 cm
Rule of thumb for children: spleen length = 6 cm + 1/3 cm per year of age
Prostate
Upper limit of normal: 30 cc


Supericial Parts Normal Measurements

http://www.wikiradiography.com/page/Supericial+Parts+Normal+Measurements

Testes
Length normal < 5 cm
Width normal < 4 cm
Depth normal < 3 cm

Epididymis
Head diameter normal < 12mm
Bodydiameternormal < 4mm
Varicocele increase in diameter with vasalva to ≥ 3 mm

Thyroid

Lobe length normal < 6 cm
AP diameter of lobe normal < 2 cm

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