ACR TI-RADS White Paper 2017

O-RADS US and MRI 2022

Ovarian Cyst Guidelines

SRU Consensus Simple Ovarian Cyst Radiology 2019

Doppler US of Liver RG 2011

Sonography Renovascular Hypertension 2002

US – Carotid Stenosis PSV Values 2003

Umbilical Artery Doppler Calculator

MCA Fetal Doppler Calculator

US Normal Values

1st Trimester Pregnancy

1st Trimester Pregnancy


  • Normal spleen in adult measures up to 12 cm; enlarged if it is 13 cm or longer
  • Splenic Index: Normally 120-480 cm³ (product of Length, Width & Thickness of spleen)
  • In children, splenomegaly should be suspected if the spleen is more than 1.25x longer than the adjacent kidney
  • Splenic Volume (prolate spheroid): 0.524 x Width x Thickness x (Maximum Length x Craniocaudal length) / 2 .  Normal splenic volume is approximately 26-250 cm³ (Loftus et al)
Lower Extremity Arterial Ultrasound Values
Lower Extremity Arterial Ultrasound Values