Thanks for your query.
From the sketchy information provided, there are two possibilities of your mother-in-law's problem :- (a) a lesion in the brain; or, cervical spine
(neck region) where there may be a collapsed vertebra, disc herniation or a growth.
Hence, MRIs of Brain and Cervical region need to be done to pinpoint the cause.
Perhaps, your doctor was referring to Angio(graphy) test(which you probably mistook as NGO). In angiography
test, a radio-opaque dye is injected in one of the main blood vessel supplying blood to the brain- to see if there is any clot/blockage in the brain vessels.
I will be able to help you if the reports of MRI and Angiography are addressed to me personally by name on this website.
I suggest that you consult a Neurologist
, as these problems fall into his domain.
Dr. Rakesh Karanwal