Custom Optical Properties input to Monte Carlo Solver Panel

[kallepa...@gmail.com]

Dear all, 

Could you please assist with regard to modifying the optical properties in Spectral Panel and using these in the Monte Carlo solver? I am new but keen to use the VP platform but I am coming to it with a very specific problem to inquire! 

Thank you in advance, 

Best regards, 
Akhil 

[kallepa...@gmail.com]

I believe that should be "Dear Carole" :) 

Akhil

[Carole Hayakawa]

Hi Akhil,

Thanks for knowing who would most likely answer!

There is no way to automatically load results from the Spectral panel into the Monte Carlo Solver panel or the Monte Carlo CommandLine (MCCL) application.  So you would have to set your desired inputs on the Spectral panel and write down the resulting mua and mus' values at the wavelength of interest.  Then you have two options:

1) Using the Monte Carlo Solver panel. The default set up is for a point source, a two layer tissue, and R(rho) detection.  If you'd like a single tissue layer you could load Layer 1 (Tissue) and Layer 2 Optical Properties with the values from Spectral Panel.  You could also click the "Download Prototype Input Files" to get all sample infiles and "Load Input File" with one you select.  Keep in mind that the GUI only plots R(rho) and Fluence(rho,z).

2) Using MCCL: You would download the latest version 4.8.0 here:

https://github.com/VirtualPhotonics/VTS/wiki/Downloads

We have documentation about how to run the MCCL here:

https://github.com/VirtualPhotonics/VTS/wiki/MCCL-Getting-Started

Again you would select an infile that most closely captures your system, edit the infile for your purposes (e.g. delete extra detectors), modify the tissue (layer 1) optical properties with those from the Spectral panel and run.

Let me know if you have more questions or need help with any setup.

Best,

Carole

[kallepa...@gmail.com]

Hi Carole, 

Thank you so much for getting back to me so quickly! 

So does this mean that the photons in the Monte Carlo Solver will be wavelength-independent and the wavelength influence would be from the Spectral Solver results? I hope I am explaining this right: Say optical properties at 600nm are taken and used in the Monte Carlo solver, the photons will behave as if interacting with a 600nm source? 

Best regards, 

Akhil

[Carole Hayakawa]

Hi Akhil,

Yes!  I would say the photons will behave as if interacting *with a tissue illuminated* with a 600nm source, a tissue described by the settings in the Spectral panel.  So for example, photons interacting with tissue=skin at 600nm will be very different than photons interacting with tissue=liver at 600nm.

I hope this helps.

Best,

Carole

[kallepa...@gmail.com]

Hi Carole, 

That is perfect. If I can use both (indirectly), then it is exactly what I need for my work. 

Will write back if I have any queries, but thank you very much for this. 

Best regards, 

Akhil