SAR Average Tool

SAR Average Tool

Giuseppe Carluccio, Christopher Collins

Systems transmitting electromagnetic waves need to satisfy safety requirements to prevent drastic change in temperature in the body tissues who are exposed to the waves. Some limits have been imposed to Specific Absorption Rate (SAR) values to indirectly control the possible temperature increase into the body: these limits involve the local peak of SAR, the peak of the local averaged SAR on tissue volume of either 1-gram or 10-grams mass, the total absorbed SAR. A Matlab tool able to compute n-grams mass local average SAR is provided here, which uses adaptive spherical masks.

The function is defined as

function SARave = SARavesphnp (MaterialDensity, SAR, a, b, c, grams)


MaterialDensity: The 3D matrix containing the 3D spatial distribution of the material density distribution
SAR: The 3D matrix describing the 3D spatial SAR distribution
a, b, c: The x, y, z, cell resolution in meters (commonly 2 mm each)
grams: The mass in grams of the volumes where the SAR average is computed (commonly 1g or 10g)

Related Publication

This tool has been presented in international symposia and published in the following article. Please consider citing this article if you have found this tool useful.

G. Carluccio, D. Erricolo, S. Oh, C. M. Collins, "An Approach to Rapid Calculation of Temperature Change in Tissue Using Spatial Filters to Approximate Effects of Thermal Conduction", in IEEE Trans. on Biomedical Engin., (Early View).

For questions, do not hesitate to contact Giuseppe Carluccio at the email address


PLEASE NOTE: The software available on this page is provided free of charge and comes without any warranty. CAI²R and the NYU School of Medicine do not take any liability for problems or damage of any kind resulting from the use of the files provided. Operation of the software is solely at the user's own risk. The software developments provided are not medical products and must not be used for making diagnostic decisions.

The software is provided for non-commercial, academic use only. Usage or distribution of the software for commercial purpose is prohibited. All rights belong to the author (Giuseppe Carluccio, Christopher Collins) and the NYU School of Medicine. If you use the software for academic work, please give credit to the author in publications and cite the related publications.

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Latest Updates

05/13/2021 - 16:37
05/10/2021 - 10:05
04/12/2021 - 15:19

Philanthropic Support

We gratefully acknowledge generous support for radiology research at NYU Langone Health from:
• The Big George Foundation
• Bernard and Irene Schwartz

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