MRI
An MRI scan
Magnetic Resonance Imaging (MRI) or Nuclear Magnetic Resonance Imaging (NMRI)
Multiple sclerosis affects the myelin sheath.
The first imaging technique for the human body was discovered by Wilhelm Röntgen in 1895.
Prise de sang
MS
Magnetic Regonance Imaging (MRI)
Eye
ultrasound imaging
They use an ultrasound machine.
Computed axial tomography, CT scan, or CAT scan are all medical terms meaning imaging using cross sectional images taken with X-rays. These studies may be done with or without contrast.
A favorite site for information on medical issues, including the symptoms of Multiple Sclerosis, is the Mayo Clinic website. WebMD is also a good choice.