25 yo male. I was diagnosed with a bicuspid aortic valve with leakage and stenosis about two months ago. As I understand it, people with BAV and more prone to aneurysms. I have had both an MRI and CT scan of the brain within the past six months, both without contrasts. I had the MRI to check for MS or other problems as I suddenly developed body wide twitching muscles. It came back normal. I also had a CT scan at the ER because I temporarily lost vision in my left eye. It came back normal and I was diagnosed with a migraine. For the past month or so, my neck has been sore and stiff. I get random, localized scalp pains, eye pains, and temple pain/pressure (sometimes only one side, sometimes both). Also, very brief bouts of vertigo multiples times a day when moving my head or eyes. Now, I have been pretty stressed. I'm fairly sure I have health anxiety. I also tend to clench my jaw and tense my shoulders when stressed. I'm becoming a little stressed out about the possibility of having a neck/brain aneurysm. Could a MRI or CT scan w/o contrast at least rules out an aneurysm that is large enough to rupture?