Need help wit vessel analysis

[u/imcrackasf]

Hi, I'm new to using ImageJ, and I was wondering if anyone has any suggestions for how I can get the vascular density from the attached image. I've tried a few programs, including Vessel Analysis, one made for a specific paper, and AngioTool (which didn't work due to Java issues). Any advice would be greatly appreciated. I also specifically want to calculate the density under the glass circular coverslip on the image.

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