Hello Mr. Lasso,
Thanks again for your help.
I still have questions about the limitation of the wall thickness and the dimension of the brain vessel:
1.) In the literature I found a study to measure wall thickness using MRI. For example, the basilar artery has a wall thickness between 0.38 mm and 0.73 mm. However, with 3D Slicer I cannot choose a wall thickness smaller than 0.75 mm (inside surface), because all dimensions below are rejected as too thin. (see attachment ‘‘too thin’’)
What does this limit depend on? Can the program determine the actual wall thickness based on the respective vessel volume?
2.) Since I would later like to print patient-specific brain vessel models based on CT images using the SLA method, I need to know whether the dimensions of the printed model correspond 1: 1 to the CT image or whether there are any deviations.
This applies in particular to the volume of individual vessel sections.
Is there a suitable module for measuring the volume?
The ‘’ Ruler ‘’ function is too imprecise for this, and you cannot get to all places, e.g. the aneurysm. (see attachment ‘‘Ruler’’)
3.) This question is a bit complicated to formulate and I hope you will understand my problem.
For this I have inserted screenshots from the systems mentioned above.
Goal: Measure the lumen.
Question: Do I first have to wrap the vessel wall around the volume in the thickness I have chosen and then remove the contrast medium shown so that a cavity is created? (see attachment Volume or Hollow)