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VirtualPhotonics / Vts.Gui.Wpf

WPF Application using the Vts library
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Spectral Panel - Intralipid Phantom MuA inaccurate #22

Open ccampb19 opened 5 years ago

ccampb19 commented 5 years ago

Since water makes up the majority of the intralipid absorption spectrum, I would expect to see a water peak at 970nm. Also, I believe the peak at 700nm is spurious. At least, I don't see this peak in my nigrosin spectra or the lipid spectrum we use, or in my Intralipid measurements. Perhaps it's related to the water problem.

image

dcuccia commented 5 years ago

Interesting, thanks Chris. What does it look like if you back down nigrosin to near zero, e.g. 0.0001?

ccampb19 commented 5 years ago

Hey David. It's the same curve, scaled. image

dcuccia commented 5 years ago

Thanks. Looks like water is not in there at all. With an IL vol fraction of 0.01, the water fraction should be 0.99, resulting in an absorption of about 0.05/mm at roughly 970nm.

ccampb19 commented 5 years ago

Right, and the water spectrum works in a custom tissue -- but then there's no nigrosin available to add.