Hello all , I use the Colin 27 4nirs template and want to run NIRS–– Source—Compute head model from fluence.
But i got an error like this:
I checked the url https://neuroimage.usc.edu/resources/nst_data/fluence/ and found that there are only “fluence_685nm“files available.
Is there a solution to this problem?
Thanks in advance for any help.
Sebastian
Hello,
The solution would be to compute the fluences. (see: https://neuroimage.usc.edu/brainstorm/Tutorials/NIRSTORM#Computation_of_the_fluences)
@Raymundo.Cassani, is there enough storage in the server to add the fluences for the 830 wavelength? if yes, i can compute it and prepare you a zip with the files.
if you can’t compute fluences, you can export your subject and host it somewhere, and i could compute it using our lab computer and send you the needed file.
Edouard
Thank you! I have already computed the fluences,but I don't know if there was any mistake in my operation.
1.Does "average estimated hemodynamic response" refer to dOD? I dragged it into the process box.If I drag the HB into the box, I will get an erro.
2.To run it, I modified the wavelength in “tissues_property.json”.
Sebastian
1.Does "average estimated hemodynamic response" refer to dOD? I dragged it into the process box.If I drag the HB into the box, I will get an erro.
yes. it refer to dOD.
2.To run it, I modified the wavelength in “tissues_property.json”.
It should be ok. If you want to be sure; you can post your modified version of “tissues_property.json” here if you want. [edit] Actually, if your wavelength is 830, then i don’t think modification is necessary as it is already in the provided file: nirstorm/bst_plugin/forward/tissues_property.json at master · Nirstorm/nirstorm · GitHub
I suggest also checking the sensitivity map and compare the two wavelengths. The values should be relatively comparable between the two wavelength.
Edouard
According to the previous report, it seems I need the fluences for two wavelengths: 785nm and 830nm. So, I just added “785” in the "tissues_property.json".
Hi Edouard! Thanks for your help now i get the source reconstruction result like this.
Sebastian
@edelaire which size are we talking in here?
