# Modify transform widget

**URL:** <https://discourse.slicer.org/t/modify-transform-widget/25747>\
**Category:** Development\
**Created:** [October 18, 2022, 8:41am UTC](https://discourse.slicer.org/t/modify-transform-widget/25747 "2022-10-18T08:41:23Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![timeanddoctor](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/timeanddoctor/32/5839_2.png) [@timeanddoctor](https://discourse.slicer.org/u/timeanddoctor)\
**Post date:** [October 19, 2022, 2:37am UTC](https://discourse.slicer.org/t/modify-transform-widget/25747/2 "2022-10-19T02:37:52Z")

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do you went this?

> [@Is there a way to change the ROI to a sphere](https://discourse.slicer.org/t/is-there-a-way-to-change-the-roi-to-a-sphere/15650/6):
>
> For example, brain surgery incisions are often oval or irregular. If I use a cube ROI, this kind of simulated incision is not very realistic. In addition, we hope that the area inside the ROI can be hidden, so that the internal situation can be seen in real time. Of course, this function can be achieved through PRISM，This function is really necessary for many neurosurgeons.Currently we are more dependent on Volume Rendering than PRISM. Just like the picture above, if I want to make a circular s…

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