A CT scan does not usually detect blocked blood vessels. Early diagnosis of blocked blood vessels due to cerebral infarction and cerebral hemorrhage requires the use of other medical imaging tests.
CT scanning is usually used to scan the brain to see if there is any abnormality in the shape of the brain tissue. CT does not have blood vessel imaging and is usually unable to detect blood vessel blockages.
Within 24 hours of vascular blockage, brain CT usually cannot show the normal image, but during 48 to 72 hours of the disease, the lesion can show the image, and the vascular blockage can be manifested as a low-density shadow with unclear boundaries on the brain CT. For the cerebrovascular disease manifestations such as hemiplegia, speech disorders, and numbness of the body that appear in the patient, the patient can be rechecked by CT after 72 hours of the disease.
Therefore, when a series of symptoms of vascular obstruction appear in the body, it is necessary to go to the hospital in time, and under the advice and guidance of the doctor, together with other imaging tests such as CT, MRI, etc. to make a clear diagnosis and active treatment, so as to avoid delaying the condition and misjudgment.