# \#mutual-information

**URL:** https://discourse.itk.org/tag/mutual-information/133.md

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## [Inconsistent Mattes Mutual Information metric Value.](https://discourse.itk.org/t/inconsistent-mattes-mutual-information-metric-value/5777)

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**Author:** [@gaurav\_patel](https://discourse.itk.org/u/gaurav_patel)\
**Replies:** 8\
**Last updated:** [March 14, 2023, 12:33pm UTC](https://discourse.itk.org/t/inconsistent-mattes-mutual-information-metric-value/5777 "2023-03-14T12:33:27Z")

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I am trying to register MRI- CT volumes from " Report of the AAPM Radiation Therapy Committee Task Group No. 132" (dataset). The dataset has CT, MR and PET volumes of geometric and anatomical phantoms. The offsets along …

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## [Difference between numberofFixedImageSamples and numberofSpatialSamples](https://discourse.itk.org/t/difference-between-numberoffixedimagesamples-and-numberofspatialsamples/4431)

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**Author:** [@c.spanakis83](https://discourse.itk.org/u/c.spanakis83)\
**Replies:** 1\
**Last updated:** [September 20, 2021, 1:26pm UTC](https://discourse.itk.org/t/difference-between-numberoffixedimagesamples-and-numberofspatialsamples/4431 "2021-09-20T13:26:58Z")

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Hello I want to use Mutual Information (specifically Mattes’ Mutual Information) in order to align 2 medical images. However, I found that it has two methods: SetNumberofFixedImageSamples (unsigned int num) SetNumberof…

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## [Changes In ITK Mattes Mutual Information Metric](https://discourse.itk.org/t/changes-in-itk-mattes-mutual-information-metric/2353)

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**Author:** [@machadoL](https://discourse.itk.org/u/machadoL)\
**Replies:** 40\
**Last updated:** [November 28, 2019, 1:22pm UTC](https://discourse.itk.org/t/changes-in-itk-mattes-mutual-information-metric/2353 "2019-11-28T13:22:57Z")

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Hi, Everyone! I have little experience on ITK, and little knowledge on C++, although, I am doing some studies on Mutual Information Metric in Registration Pipelines. :smile: I’ve been reading a lot about registration, …