# \#transform

**URL:** https://discourse.slicer.org/tag/transform/498.md

[Latest](https://discourse.slicer.org/latest.md) · [Categories](https://discourse.slicer.org/categories.md) · [Tags](https://discourse.slicer.org/tags.md)

---

## [transformed and hardend ROI not loading transformed](https://discourse.slicer.org/t/transformed-and-hardend-roi-not-loading-transformed/44506)

<div class="topic-metadata">

**Author:** [@Tamara](https://discourse.slicer.org/u/Tamara)\
**Replies:** 3\
**Last updated:** [September 17, 2025, 8:04pm UTC](https://discourse.slicer.org/t/transformed-and-hardend-roi-not-loading-transformed/44506 "2025-09-17T20:04:37Z")

</div>

Hello, I want to transform my ROI and slightly rotate it while the full image is loaded in preview mode. Then I want to just load the transformed ROI in full resolution in order to then just work on this part of the imag…

---

## [Help with Transform Inversion and Modifying PLUS Transformation in Slicer](https://discourse.slicer.org/t/help-with-transform-inversion-and-modifying-plus-transformation-in-slicer/44284)

<div class="topic-metadata">

**Author:** [@daimon2](https://discourse.slicer.org/u/daimon2)\
**Replies:** 2\
**Last updated:** [August 31, 2025, 7:41pm UTC](https://discourse.slicer.org/t/help-with-transform-inversion-and-modifying-plus-transformation-in-slicer/44284 "2025-08-31T19:41:18Z")

</div>

Dear Slicer Community, I am a beginner working through the tutorial “day2\_PrototypingImageGuidedTherapyApplications,” and I need some help with transformations. The transformation I am receiving from Optitrack through P…

---

## [Output transform from Elastix Registration](https://discourse.slicer.org/t/output-transform-from-elastix-registration/41936)

<div class="topic-metadata">

**Author:** [@Jason\_chen](https://discourse.slicer.org/u/Jason_chen)\
**Replies:** 0\
**Last updated:** [March 3, 2025, 2:26am UTC](https://discourse.slicer.org/t/output-transform-from-elastix-registration/41936 "2025-03-03T02:26:27Z")

</div>

Hi, I am using Elastix extension in Slicer to register two medical volumes. During this process, I found that the transform output by Elastix which can be used to transfrom other volumes from moving field to fixed field…

---

## [Error when exporting transformation](https://discourse.slicer.org/t/error-when-exporting-transformation/41565)

<div class="topic-metadata">

**Author:** [@dpvaldes](https://discourse.slicer.org/u/dpvaldes)\
**Replies:** 0\
**Last updated:** [February 7, 2025, 8:13pm UTC](https://discourse.slicer.org/t/error-when-exporting-transformation/41565 "2025-02-07T20:13:16Z")

</div>

Slicer 5.8.0 I created a transformation in the ‘Transform’ module. This is how it is displayed in Slicer GUI: and this is the export: I have checked that the different is not due to the coordinate systems. What …

---

## [Point on 2D CT slice image to RAS coordinate transformation](https://discourse.slicer.org/t/point-on-2d-ct-slice-image-to-ras-coordinate-transformation/35770)

<div class="topic-metadata">

**Author:** [@joanne40226](https://discourse.slicer.org/u/joanne40226)\
**Replies:** 0\
**Last updated:** [April 27, 2024, 12:57pm UTC](https://discourse.slicer.org/t/point-on-2d-ct-slice-image-to-ras-coordinate-transformation/35770 "2024-04-27T12:57:38Z")

</div>

Hi community, I encounter problems when doing point on 2D CT slice image to RAS coordinate. I have screen shot an 2D CT image as shown below. i check some imformation for example the actual size of the image in mm is :…