Hi thanks for your question.
The CT Scan
report of your mother depicts that she has atherosclerotic stroke
.In atherosclerotic strokes blood supply to various part of brain is reduced or totally blocked due to atherosclerosis
of the blood vessel supplying to brain.
Functions of brain can be improved by re vascularization of the narrowed or blocked vessel.
But all depends upon,how much time has elapsed between the first symptom of stroke and re vascularization therapy.
Consult some neurologist
who will examine and advice about the management of your mother.
Hope i answered your question