Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2017 Oct 5;7:12727. doi: 10.1038/s41598-017-13097-6

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

PMC Copyright notice

Examples of virtual phantoms used to validate the algorithm quantifying distortion. (a) identical volumes (as measured in mm) in dissimilar spaces; (b) volumes constructed from circular outlines of differing radii: d _rms reflects the difference in radii and the surface distortion map is coloured red indicating that the moving volume surface bulges from the fixed volume surface uniformly; (c) step-wise local translation of centroids is reflected in T _s tree while local distortion reflects the uniform recess due to circular sections in moving volume being smaller than those in fixed volume; (d) local bulges in otherwise identical volumes are reflected in colour of distortion surface map; (e) similar to (d) but showing an anterior and superior bias in distortion; (f) local translation and slice section difference in shape reflected in distortion surface map and T _s tree respectively.