How to get pictures back that I lost in a backup of my iphone

I just updated itunes on my computer and my phone was not connected to my laptop during the update. However, all of my notes on my iphone 4 got deleted for some reason so when i restored my back up on my computer, i got them all back but lost about 50-60 pictures. Is there any way i can possibly get them back!

You don't need to plug in your iDevice to update iTune. Something went wrong here and it wasn't the update. I updated iTune on two of my computer and nothing went wrong.
Are you using Windows? When you pug in the iPhone, you should see a pop up prompting you what to do, it works as a mass storage device, use the windows explorer to search for the missing photos, that is what I did with my boss's phone.