Can brain CT scan detect insufficient blood flow to the brain?

Brain CT is a common method for examining brain diseases. Brain CT cannot check for cerebral ischemia. If you want to check for cerebral ischemia, carotid artery color Doppler ultrasound should be used, and atherosclerotic plaques should also be checked. Brain CT is a common method of brain examination. It is very effective in examining intracranial tumors and cerebrovascular diseases. It is also very effective in examining brain parasites and degenerative diseases.

What diseases can brain CT detect

Brain CT examination is a common brain examination item. As an advanced brain examination equipment, CT is of great significance for the diagnosis and treatment of diseases and the evaluation of the progress of treatment effects. In terms of disease diagnosis, brain CT has a very good diagnostic effect on specific diseases such as intracranial tumors, cerebrovascular diseases, craniocerebral injuries, intracranial inflammatory lesions, brain parasitic diseases, and brain degenerative diseases.

Brain CT examination can also reflect the effect of disease treatment, especially through the observation of the size, shape, range, number of internal hematomas and compression of adjacent brain tissues, which is of great significance to sequelae and treatment effects.

Brain blood supply test

Electroencephalogram (EEG), brain CTA or MRA, and transcranial Doppler ultrasonography may be done.

Differential Diagnosis

1. Focal motor epilepsy should be differentiated from internal carotid artery TIA attacks. Focal motor epilepsy is mostly caused by organic brain lesions, which are more common in young people. It is usually a series of repetitive convulsions on one side of the limbs or a part of the body. It is mostly seen in one corner of the mouth, eyelids, fingers or toes, and may also involve one side of the face or the distal end of a limb. After a more serious attack, the seizure site may leave behind temporary paralysis of the affected muscles, which is Todd's palsy. Local convulsions may occasionally last for hours, days, or even weeks, becoming persistent partial epilepsy. Further questioning of the medical history revealed a history of epileptic seizures. Brain CT scan or MRI could reveal brain lesions, and EEG examination showed epileptic waves. Antiepileptic drugs can control seizures and can be used for differentiation, while the electroencephalogram (EEG) of internal carotid artery TIA is normal.

2. Inner ear vertigo should be differentiated from vertebral-basilar artery TIA. The common point between the two is that both cause vertigo, but TIA is more common in the elderly, while inner ear vertigo is more common in middle-aged and young people, accompanied by tinnitus. The attack of inner ear vertigo can last for a long time and gradually ease after several days. There are no localizing signs in the neurological examination, especially no brainstem localizing signs. Mannitol and symptomatic treatment are effective. 3. Syncope Syncope is more common in young women and refers to a sudden and transient loss of consciousness. It is a transient loss of consciousness caused by temporary and widespread cerebral ischemia, often caused by physical factors such as hypoglycemia, alkali poisoning, and damage to the brain tissue itself. It can also be secondary to cerebral blood circulation disorders. Its clinical characteristics are acute onset and transient loss of consciousness. Patients often experience prodromal symptoms about 1 minute before a fainting attack, including general discomfort, blurred vision, tinnitus, nausea, pale complexion, cold sweats, and weakness in the limbs, followed by fainting soon after. During a syncope, there is loss of voluntary movement and sensation, and sometimes breathing stops, the heart rate slows, or even the heart stops beating. At this time, it is difficult to feel the pulsation of the radial artery and carotid artery.

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