# Volume measurement of defect with Surface Scan

**URL:** https://discourse.slicer.org/t/volume-measurement-of-defect-with-surface-scan/18501
**Category:** Support
**Created:** [July 4, 2021, 6:08am UTC](https://discourse.slicer.org/t/volume-measurement-of-defect-with-surface-scan/18501 "2021-07-04T06:08:27Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![manjula](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/manjula/32/80981_2.png) [@manjula](https://discourse.slicer.org/u/manjula)
#### Post date: [July 4, 2021, 6:08am UTC](https://discourse.slicer.org/t/volume-measurement-of-defect-with-surface-scan/18501/1 "2021-07-04T06:08:27Z")

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What would be the best way to measure the volume of a surface defect with a surface scan.  
The surface scan is in the stl format.  
I have tried by using converting to segment and creating a blank volume and segmenting the space. It gives results but too many steps are involved.

Is there a better and easier way of getting the volume of the space (defect) ?

 ![Screenshot_2](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/3/e/3e356ab5eba001b3a9d0e145b141ba8bc2bb7288.png)

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### Author: ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)
#### Post date: [July 7, 2021, 4:48pm UTC](https://discourse.slicer.org/t/volume-measurement-of-defect-with-surface-scan/18501/2 "2021-07-07T16:48:10Z")

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It sounds like this would be another good task for the baffle planner tool. You could create the cap over the defect and then fill a new segment inside to measure.