Welcome to Classifications and Online Calculators in Radiology

This site was build along with the Atlas of Radiology Images to support your knowledge in radiology.

You will find here:

that are used in radiology and related fields with free access.


  • Some pages are accompanied by illustrations
  • All pages contain tags for easy navigation

The concept

The concept of this website is based on a previous site that was founded in 2008 and is still up and running. The website is composed as a book, where all sources are properly referenced, according to a good practice in scientific publications.

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    Estimate of liver volume on CT or MRI - calculator

    This formula can be used to estimate volume of the liver on crossectional imaging methods by measuring its maximum dimension in three perpendicular axes - caudocranial (CC), latero-lateral (LL), antero-posterior (AP). A normal value is considered <2000mL.

    Volume = CC x LL x AP x 0.31

    Parameter Value  
    Max. cranio-caudal dimension (CC)* cm
    Max. latero-lateral dimension (LL)* cm
    Max. antero-posterior dimension (AP)* cm

    * Required




    1. Muggli D, Müller MA, Karlo C, Fornaro J, Marincek B, Frauenfelder T. A simple method to approximate liver size on cross-sectional images using living liver models. Clinical Radiology. 2009 Jul;64(7):682–9.

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