Magnetic resonance imaging nervous system lesions

Results from a large, double-blind, placebo-controlled study have found that 8 million lU subcutaneously (the low-dose treatment group) of IFN-p every other day brought the most promising results, w/ith a one-third reduction in exacerbations and a decrease by half in the frequency of severe attacks. Cranial magnetic resonance imaging showed that treated patients did not develop new lesions in the central nervous system and had less active lesions than patients treated with placebo. The exact mechanism of action of IFN-p t, is not known. Its immunomodulating effects, however, may benefit patients with MS... 

A 16-year-old boy developed unsteadiness and double vision 5 minutes after intranasal inhalation of a small amount of amfetamine cut with cocaine. Cranial MRI (magnetic resonance imaging) revealed a mesencephalic lesion that was seen to have decreased 12 days later, and he became symptom-free after 3 weeks. The ischaemic lesion was thought to be due to vasospasm caused by synergistic stimulation of the sympathetic nervous system amfetamine causes the release of adrenaline (epinephrine) and noradrenaline (norepinephrine), while cocaine prevents their reuptake. ... 

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