What is intracranial Doppler blood flow diagram to examine?

summary

The measurement of blood flow parameters, including peak systolic velocity, end diastolic velocity, average velocity and resistance index, can be used as an early screening diagnostic method. What is intracranial Doppler blood flow diagram to examine?

What is intracranial Doppler blood flow diagram to examine?

Abnormal results: all of the following examinations were abnormal: (1) the local blood flow velocity in the stenosis was accelerated or there was a large lateral difference (> 2S). (2) the regional pulsation decreased after stenosis. (3) abnormal blood flow in any region that causes spectrum broadening. (4) the local blood flow velocity of posterior communicating artery or anterior communicating artery increased, indicating collateral circulation. (5) the ratio of "unbalanced" blood flow in the basilar arteries; For example, the blood flow velocity of the posterior cerebral artery exceeds that of the middle cerebral artery. 　

Neurasthenia, neonatal intracranial hemorrhage, cerebral subarachnoid hemorrhage, dural abscess, dural abscess, intracranial venous sinus occlusive intracranial hypertension, intracranial venous thrombosis, senile hypothyroidism, senile cerebral embolism, senile vertebrobasilar insufficiency, etc.

Taboo before examination: wash your head with shampoo the day before examination (don't wipe hair gel and oil), have a good rest before examination, and don't take sleeping pills, analgesics and sedatives. The patient that takes antiepileptic drug cannot stop drug can not stop drug, but should tell check doctor. Don't wear jewelry. Have a full meal before examination, not an empty stomach examination.

matters needing attention

Unsuitable crowd: for those with brain injury, the taboo before examination: wash your head with shampoo the day before examination (don't wipe hair gel and oil), have a good rest before examination, and prohibit taking sleeping pills, analgesic drugs and sedatives. The patient that takes antiepileptic drug cannot stop drug can not stop drug, but should tell check doctor. Don't wear jewelry. Have a full meal before examination, not an empty stomach examination. Inspection requirements: actively cooperate with the doctor. Turn off the power switch of the mobile phone and BPR when checking.