Find an equation of the sphere that passes through the point 
and has center 
Definitions:
Stroke
A stroke occurs when the blood supply to part of the brain is interrupted or reduced, preventing brain tissue from getting oxygen and nutrients, which can cause brain cells to die.
Parkinson Disease
A neurodegenerative disorder that affects movement, often including tremors, stiffness, and difficulty with balance and coordination.
Brain Stimulation
The application of electrical impulses to specific parts of the brain to modulate neurological function or treat neurological disorders.
Parkinson Disease
A degenerative disorder of the central nervous system that affects movement, often including tremors.
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