Insufficient blood supply caused by the cervical spine is mainly vertebral artery-type cervical spondylosis, which can be diagnosed by cervical spine CT, MRI or angiography. Vertebral artery-type cervical spondylosis is mainly caused by hyperplasia and stenosis of the transverse foramen of the cervical spine, osteophytes of the hook spine joints, or degeneration of the cervical spine that causes reduced stability, resulting in vertebral artery entrapment or tugging and irritation, which leads to a reduction in the supply of vertebral arteries to the brain, resulting in insufficient blood supply, leading to symptoms such as dizziness, headache, sudden collapse, or visual disturbances. For vertebral artery-type cervical spondylosis, cervical spine CT is usually performed, and the diameter of the vertebral foramen or the osteophytes of the hook vertebral joint can be seen in cross-sectional view to determine the compression of the vertebral artery. The sagittal position of cervical MRI observes the condition of the vertebral artery or the cross-sectional diameter to determine the stenosis of the vertebral artery. Vertebral artery angiography can directly show the stenotic segment of vertebral artery. And then determine the blood supply insufficiency caused by vertebral artery stenosis.