# Parametric response mapping, chest CT

**URL:** <https://discourse.slicer.org/t/parametric-response-mapping-chest-ct/29111>\
**Category:** Support\
**Created:** [April 25, 2023, 11:10am UTC](https://discourse.slicer.org/t/parametric-response-mapping-chest-ct/29111 "2023-04-25T11:10:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![V\_LJ](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/v_lj/32/65674_2.png) [@V\_LJ](https://discourse.slicer.org/u/V_LJ)\
**Post date:** [April 25, 2023, 11:10am UTC](https://discourse.slicer.org/t/parametric-response-mapping-chest-ct/29111/1 "2023-04-25T11:10:32Z")

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Greetings Slicers,

Is it possible to make a PRM (parametric response mapping) from an inspiratory and expiratory chest CT scan with 3DSlicer?  
I know, that i need an image registration between inspiratory and expiratory scans. To make that, I downloaded the Elastix extension to my 3DSlicer. After that, i should create the PRM, but i don’t know, how. Which extension i could use?

Thank you!