# The dose map image obtained fits well on CT but doesn´t fit well on SPECT. What does it happen?

**URL:** <https://discourse.slicer.org/t/the-dose-map-image-obtained-fits-well-on-ct-but-doesn-t-fit-well-on-spect-what-does-it-happen/25276>\
**Category:** Support\
**Created:** [September 14, 2022, 6:48pm UTC](https://discourse.slicer.org/t/the-dose-map-image-obtained-fits-well-on-ct-but-doesn-t-fit-well-on-spect-what-does-it-happen/25276 "2022-09-14T18:48:36Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Jesus\_Domech\_More](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jesus_domech_more/32/16663_2.png) [@Jesus\_Domech\_More](https://discourse.slicer.org/u/Jesus_Domech_More)\
**Post date:** [September 14, 2022, 6:48pm UTC](https://discourse.slicer.org/t/the-dose-map-image-obtained-fits-well-on-ct-but-doesn-t-fit-well-on-spect-what-does-it-happen/25276/1 "2022-09-14T18:48:36Z")

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The dose map image obtained fits well on CT but doesn´t fit well on SPECT.  
What does it happen?