Persistent intracranial murmur, a persistent murmur like the roar of a machine, aggravated by heart contraction, often affecting sleep, can be heard in the frontal area with a stethoscope, and the murmur diminishes or disappears with finger pressure on the affected common carotid artery. So, what are the examination items needed for the diet of patients with persistent intracranial murmur? The following is a brief introduction: 1, magnetic resonance imaging (MRI): MRI, also known as magnetic resonance imaging, is the use of nuclear magnetic resonance principle, through the applied gradient magnetic field detection of the emitted electromagnetic waves, according to which the internal structure of the object can be drawn into the image. 2, cranial CT examination: cranial CT is a new examination method that is convenient, rapid and safe, painless and non-invasive, which can clearly show the anatomical relationship between different cross-sections of the cranial brain and the specific brain tissue structure. Thus, it greatly improves the detection rate of lesions and the accuracy of diagnosis. In general, CT has better visualization of human hard tissues than soft tissues. Cranial CT examination is important for the diagnosis of most diseases of the intracranial, cranial, and scalp (including trauma, tumors, inflammation, vascular lesions, poisoning, degenerative and metabolic diseases, etc.).