Search found 168 matches

by David Parker
Mon Jun 17, 2019 8:57 am
Forum: SimVascular: Cardiovascular Modeling and Simulation Application
Topic: How to move the stent in Simvascular?
Replies: 1
Views: 34

Re: How to move the stent in Simvascular?

Hi Chunyu, Building a CFD mesh incorporating a stent is a bit involved. The best way yo do this is to use a solid modeler to build a solid model of the vascular geometry and the stent, and then perform a Boolean subtraction of the stent from the vascular geometry. Another way would be to use VTK Boo...
by David Parker
Mon Jun 17, 2019 8:28 am
Forum: SimVascular: Cardiovascular Modeling and Simulation Application
Topic: CELL output as regular grid
Replies: 1
Views: 21

Re: CELL output as regular grid

Hi Sekeun,

This is a pretty specialize application, projecting a unstructured grid to a structured grid, SimVascualar does not have such an operation.

You can use VTK to do this using the vtkSelectEnclosedPoints class.

Cheers,
Dave
by David Parker
Thu Jun 13, 2019 8:42 pm
Forum: SimVascular: Cardiovascular Modeling and Simulation Application
Topic: Segmented mask to mesh
Replies: 3
Views: 125

Re: Segmented mask to mesh

Hi Sekeun,

You can create a segmentation of a binary image using the level set 2D segmentation method in SimVascular. You can then create a surface from the segmentation and generate a finite element mesh that can be used for a cfd simulation.

Cheers,
Dave
by David Parker
Wed Jun 12, 2019 7:00 pm
Forum: SimVascular: Cardiovascular Modeling and Simulation Application
Topic: Running svSolver in Cluster
Replies: 5
Views: 96

Re: Running svSolver in Cluster

Hi Damian, Well, I created a VM with CentOS 7 and ran svsolver no problem with both MPICH and OpenMPI! I didn't think that would work ... The problem must have to do with setting up the environment you are running the job in to find MPI. I know on some clusters you must manually ask for certain appl...
by David Parker
Wed Jun 12, 2019 6:55 pm
Forum: SimVascular: Cardiovascular Modeling and Simulation Application
Topic: Segmented mask to mesh
Replies: 3
Views: 125

Re: Segmented mask to mesh

Hi Sekeun, I don't quite understand your question. You generate a image mask identifying an anatomical feature (e.g. vessel lumen) like in the attached picture. But you don't want to create a segmentation based on the just the mask? You would like to use the mask as a guide for the segmentation? If ...
by David Parker
Wed Jun 12, 2019 6:17 pm
Forum: SimVascular: Cardiovascular Modeling and Simulation Application
Topic: Installation_issues_Ubuntu19.04
Replies: 9
Views: 165

Re: Installation_issues_Ubuntu19.04

Hi Guillaume, It's not clear what's going on here. We have just recently found some problems with the MITK DICOM reader for CT data but I have not seen any problems with MR. Your data is detected as MR but then a reader can't be found for it so I'm thinking that there is a formatting issue with your...
by David Parker
Tue Jun 11, 2019 10:09 pm
Forum: SimVascular: Cardiovascular Modeling and Simulation Application
Topic: Running svSolver in Cluster
Replies: 5
Views: 96

Re: Running svSolver in Cluster

Hi Damian, Hmmm, I would not think that this would work, but maybe with the right CentOS it could. I'm not sure what is causing the undefined symbol: mpi_type_extent error, seems like the library you are linking to can't find this symbol, maybe due to CentOS / Ubuntu. Are you sure you are using an m...
by David Parker
Tue Jun 11, 2019 9:25 pm
Forum: SimVascular: Cardiovascular Modeling and Simulation Application
Topic: Installation_issues_Ubuntu19.04
Replies: 9
Views: 165

Re: Installation_issues_Ubuntu19.04

Hi Guillaume,

Where you able to create a project and read in the image files (right click on Images->Add/Replace Images)?

Is your data CT or MRI?

Cheers,
Dave
by David Parker
Mon Jun 10, 2019 1:42 pm
Forum: SimVascular: Cardiovascular Modeling and Simulation Application
Topic: Installation_issues_Ubuntu19.04
Replies: 9
Views: 165

Re: Installation_issues_Ubuntu19.04

Hi Guillaume, Now I understand the problem! When you start SV there is an SV 2D Segmentation tool panel displayed that is not associated with any contour group. When you click on the Lofting Parameters button SV crashes. I've created a GitHub Issue for this (https://github.com/SimVascular/SimVascula...
by David Parker
Mon Jun 10, 2019 8:53 am
Forum: SimVascular: Cardiovascular Modeling and Simulation Application
Topic: Running svSolver in Cluster
Replies: 5
Views: 96

Re: Running svSolver in Cluster

Hi Damian,

The svSolver installer is for Ubuntu so I am assuming that you build the CentOS version yourself?

Cheers,
Dave