I have had an MRA. It is basically a double MRI. During the MRI, they set up the sensors to only recognize the non-blood tissues in the brain. They then subtract the MRI image without the blood showing from the complete MRI image. The result is the blood vasculature. The images are quite interesting. Mine shows a 'slight out pouching' in the top of my brain stem that would be considered an aneurism if it was larger. The small size is not a concern. Lucky because brain stem aneurisms are all but impossible to treat.
There are ultra-sound images they can do to look at the vasculature in the brain. It is called Dopler Ultra Sound.
Have you had a tilt table test? This evaluate how your body reacts to changes in postural position. Some times, a therapist will prescribe exercises where you slowly change positions to stimulate the vaso-constrictors to operate better. Injury to cerebral vaso-constriction function is common with head injuries.
Mark in Idaho
59 years old, retired due to disability, married 33 years, father of three, grandfather of four, Suffered a serious concussion at 10 years old (1965) stopped most driving after last concussion at 46 years old (2001), Post Concussion Syndrome/Multiple Concussion/Impact Syndrome with PTSD, immediate and short term visual and auditory memory problems, slowed processing speed, visual and auditory processing difficulties, insomnia, absence seizures, OCD, 14 concussions since first concussion at 8 years old, Taking paroxetine for 14 years and gabapentin for 12 years. Added L-Tryptophan and successfully stopped all paroxetine after 3 months of tapering down. I currently take 500 mgs of L-Tryptophan when I wake up, 500 mgs after breakfast with my vitamin regimen and 500 mgs late in the evening.
As of Nov 15th, Due to high stress issues resulting in PTSD, my docs put me on three meds. Clonazepam (Klonopin, a dreaded benzo but only for 30 days ) .125 mgs twice daily (Doc prescribed .25 mgs twice daily but half a tablet is doing good) , citalopram (Celexa), an SSRI , and olanzapine (Zyprexa), an atypical anti-psychotic before bed. I have lost over 30 pounds since mid July. The olanzapine is supposed to help me gain some of it back but it has just stopped the weight loss. They took me off the gabapentin. I am feeling better than I have in years.
I am also taking L-Theanine to help with GABA regulation
"Be Still and Know That I am God" Psalm 46:10