Measuring diameter of blood vessels

Hello,

I have a project that I would like to understand how to approach. I'm given a task to measure the diameter of a blood vessel, I think Matlab would be the best for image processing because I have most experience with it. I'm sure there are multiple libraries already existing that can do such a task, I would just like some help understand the methods behind it.

Thank you for your time,

Christy

[John BG]

the people asking these kind of questions usually attach a sample image so readers can start working on.

[jupiter]

Is it given by some research institute ?