Can a MRI tell aprox. how long ago injury occured?

[my_golden_pony]

Help please hurt my knee at work in Oct 06. just went 2 Ortho Doc & he is setting up a MRI. Will the MRI be able 2 show prove how old injury is? Think my boss is trying 2 get out of it being work related. My boss has it in 4 me anyways & I think he is quote "trying 2 find legal way 2 get rid of me & other girl" in our dept; several guys in our dept has told us he has made that exact statement, we are scared 2 go 2 hr because he gave us both a bad eval he claims we are not able 2 do a certain task in our job plus there are a couple of the guys that cant do this task either but he did not hold it against their eval. I have a long list of things he has done to me that I let slide because I need 2 keep my job he just keeps giving us both a hard time. need to know if the MRI will show that it was due to the work injury or I have waited to long to hold the company responsible. went 2 the company doctor when it first happen but he didnt help much. thanks for ur input!!