前脊髄動脈症候群のMRI所見

抄録

Magnetic resonance imaging (MRI) was used to evaluate the time course of a patient with anterior spinal artery syndrome.
A 66-year-old woman presented with sudden onset of left scapular pain. Within a few hours, she developed paralysis of both upper extremities as well as loss of pain and temperature sensation below the T₁₀ dermatome. A diagnosis of anterior spinal artery syndrome was made clinically. After 6 months of physical therapy, she regained a small amount of upper extremity strength but neurological deficits were otherwise unchanged.
MRI obtained 1 and 7 days after onset showed a low intensity area on T1-weighted view and high intensity area on T2-weighted view in the cord at the level of C3-C6 and the images showed cord enlargement. One month after onset, the cord enlargement was decreased.
MRI obtained 6 months after onset showed cord atrophy and a low intensity area on T₁-weighted images and high intensity area at the same level on T₂-weighted images at C₄-C₅ levels.