Hello Slicer developers,

I am doing research about HDR brachytherapy for skin (plesiotherapy) and intraoperative applications.

For planning purposes, I would like to generate a series of equidistant curves (for example 1 cm away) on a given surface (for example, a model of the patient’s skin or a tumor) that would simulate the trajectories of the catheters to be placed for treatment.

Is there any module or extension that could do this?

What I’ve seen until now is that I could define two points on the mentioned surface and that “Open Curve Markup” from Slicer 4.11 could generate a path connecting them. The problem here is that I do not know if I can constrain the different curves to be separated a certain distance.

Here is an example with two curves:

Moreover, I would like to obtain a model/segmentation of these curves, so when using “Open Curve Markup” and “Markups to Model” I have the same problem as in this topic: Use Open Curve Markup as input node in "Markups To Model" extension.

I would like to underline that this should be done preoperatively, so neither “PathReconstruction” nor “SlicerIGT” extensions would help.

Thank you very much in advance,

Alessandro