Can you use subfolders inside of the Nextgen Gallery?

Hello,
I am setting up a CMS type site with technical articles for people wanting to learn to repair motorcycles. I have images that associate with all my WP pages and I would like to keep them organized. Right now I have all the images broken down according to the page they correspond to, so if I have a technical article on brakes called “brake bleeding” then my folder structure is like this:

tech > brakes > brake_bleeding

and the images are in the “brake_bleeding” folder.

I loaded all my images into my nextgen “gallery” directory, so my folder structure is now like this:

gallery > articles > tech > brakes > brake_bleeding

When I go into the admin panel for NextGen and tell it to “scan folder for new images” it reports back that my folder “contains no pictures”. I am assuming that this issue is caused by my subfolders because I have other galleries working perfectly from the root folder.

So my question is – is there some way that I can use my subfolder structure as it is, or do I need to just put all my images in the “root” gallery folder?

Thanks in advance for any insight you can offer.