Objective To study the ultrasonic characteristic of vertebral artery cervical spondylopathy (VACS).
目的进一步探讨椎动脉型颈椎病(VACS)的超声表现。
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The All Vac is the Budget vac with a real appetite. All Vacs suck up rock, wood chips and shavings, sand, gravel, leaves, compost, mud, sludge, glass and debris.