RESUMO
Sixty patients who underwent brain and neck CT angiograpby (CTA) were randomly divided into two groups: conventional protocol group and optimizing protocol group with 30 in each. The images were evaluated by two radiologists independently. The images of optimizing group avoided the artifact disturbance of the brachiocephalic vein effectively and greatly improved the imaging quality of arteria carotis communis and arteria vertebralis initial segment. Compared with the conventional group the differences were statistically significuat(P <0.05). The optimization of 64-MDCT brain and neck CTA is feasible and effective.
RESUMO
Objective To describe MRI findings of acute spinal cord decompression sickness.Methods MRI findings of 5 cases with clinical definite acute spinal cord decompression sickness were retrospectively analyzed.The main clinical informations included underwater performance history against regulations,short-term complete or incomplete spinal cord injury symptoms after fast going out of water,sensory disability and urinary and fecal incontinence,etc.Results Spinal cord vacuole sign was found in all 5 cases.Iso-signal intensity(n=3),high signal intensity(n=1),and low signal intensity (n=1)was demonstrated on T1 WI,and high signal intensity(n=5)was found on T2 WI.Owl eye sign was detected in 3 cases,and lacune foci were seen in 2 cases.Conclusion MRI findings of acute spinal cord decompression sickness had some characteristics,and it was easy to diagnose by combining diving history with clinical manifestations.