# Sequence registration

**URL:** https://discourse.slicer.org/t/sequence-registration/7864
**Category:** Support
**Created:** [August 3, 2019, 2:44pm UTC](https://discourse.slicer.org/t/sequence-registration/7864 "2019-08-03T14:44:34Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![sarvpriya1985](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/sarvpriya1985/32/4094_2.png) [@sarvpriya1985](https://discourse.slicer.org/u/sarvpriya1985)
#### Post date: [August 3, 2019, 2:44pm UTC](https://discourse.slicer.org/t/sequence-registration/7864/1 "2019-08-03T14:44:34Z")

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Hi,

Is there any change in sequence registration? Earlier, to register a 4d cardiac sequence it used to take me a minute or so (after doing cropping, isotropic spacing 1.7x), but now even after 20 minutes, it is still not completed. I amusing 4.11 version.  
Pls advise if something is wrong on my end.

Thanks,  
Sarv

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### Author: ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [August 5, 2019, 3:39am UTC](https://discourse.slicer.org/t/sequence-registration/7864/2 "2019-08-05T03:39:44Z")

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Does the registration end after a while? Does the result look good?  
Have you tried with the latest Preview Release?  
Could you attach the application log?

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### Author: ![sarvpriya1985](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/sarvpriya1985/32/4094_2.png) [@sarvpriya1985](https://discourse.slicer.org/u/sarvpriya1985)
#### Post date: [August 5, 2019, 3:55am UTC](https://discourse.slicer.org/t/sequence-registration/7864/3 "2019-08-05T03:55:27Z")

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Hi Andras,

Sequence didn’t register. It failed after sequence 9th (out of 10th) due to bad allocation memory. So then I had to increase the spacing by 2.0x. However, i had to reduce field of view and include only heart and cut out aorta and then it worked. I guess the issue is related to memory and i am not sure how much is the minimum required for this task.

Thanks again,  
Sarv

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### Author: ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [August 5, 2019, 4:04am UTC](https://discourse.slicer.org/t/sequence-registration/7864/4 "2019-08-05T04:04:29Z")

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Yes, you need to increase memory size by installing more RAM or increasing virtual memory size (it is system setting on Windows and Linux; amount of free disk space on MacOSX), crop image or reduce image resolution, or disable saving of output transforms.