In this report, 3 patients with suspected MS were studied by MRI. All patients were performed with spin-echo (SE) pulse sequence. A pulse repetition time (TR) of 1800 msec. and echo time (TE) of 33, 66, 99, 132 msec. producing a T2-weighted image. The result showed that MS is characterized by numerous long T2 lesions in the paraventricular white matter. Brain stem lesions were seed in all 3 patients. MRI is a very useful diagnostic tool for diagnosis of MS.