# How to get the coordinates of a point where a straight line intersects a blood vessel wall in 3DSLicer

**URL:** <https://discourse.slicer.org/t/how-to-get-the-coordinates-of-a-point-where-a-straight-line-intersects-a-blood-vessel-wall-in-3dslicer/34855>\
**Category:** Support\
**Created:** [March 13, 2024, 4:54am UTC](https://discourse.slicer.org/t/how-to-get-the-coordinates-of-a-point-where-a-straight-line-intersects-a-blood-vessel-wall-in-3dslicer/34855 "2024-03-13T04:54:43Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![huangrenyuan](https://avatars.discourse-cdn.com/v4/letter/h/71e660/32.png) [@huangrenyuan](https://discourse.slicer.org/u/huangrenyuan)\
**Post date:** [March 13, 2024, 4:54am UTC](https://discourse.slicer.org/t/how-to-get-the-coordinates-of-a-point-where-a-straight-line-intersects-a-blood-vessel-wall-in-3dslicer/34855/1 "2024-03-13T04:54:43Z")

</div>

![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/f/5/f51f02e029f4be1afe4ec374fe405dd58649d989.jpeg)  
The AB line segment passes through the blood vessel wall, and the intersection point with the blood vessel wall is F, if you want to get the RAS coordinates of the point F, how can I get it?