What Is a Cranial Ultrasound?
Adult brain third ventricle width: 2.3 ± 0.6mm.
- (1) B-mode ultrasound craniocerebral examination: It is mainly used for children with cardia not closed within 2 years of age, and scans through the cardia as the "sound window". (2) Transcranial color Doppler imaging: Transtemporal window, occipital window, orbital window can be used to detect cerebral arteries. It can be determined according to the velocity, bandwidth, flow direction abnormality, or audio abnormality of intracranial blood vessels. It is applied to the brain. Diagnosis and classification of vascular diseases.
- Name
- Craniocerebral ultrasound
- category
- Ultrasound (B ultrasound, A ultrasound)
Craniocerebral ultrasonography
- Adult brain third ventricle width: 2.3 ± 0.6mm.
Clinical significance of craniocerebral ultrasound
- Abnormal results: (1) The quality of real-time ultrasound images of the brain is greatly affected by the skull. So far, the application of ultrasound imaging is mainly limited to infants and neonates whose cardiac valve has not been closed within 2 years of age. (2) Transcranial real-time ultrasound may have certain application value in the diagnosis and interventional treatment of brain abscesses and intracranial space occupying lesions in adolescents and some people. (3) Color ultrasound and transcranial Doppler TCD: check the carotid arteries, vertebral arteries and their lesions, and detect intracranial arterial blood flow. It is widely used to check various diseases such as craniocerebral vascular malformation and arterial stenosis. Need to check the crowd: Intracranial hemorrhage: neonatal intracranial hemorrhage, subdural hemorrhage, subarachnoid hemorrhage and other symptoms of patients, children under 2 years of age with open cardia.
Cranial brain ultrasound precautions
- Preparation before examination: No special preparation is needed, as long as the child is in a relatively quiet state, generally no sedatives are required. Inspection requirements: different diseases are inspected at different times and have different targets: (1) Intracranial hemorrhage: The vast majority of examinations occur from 3 days to 1 week after birth, and 90% to 95% of intracranial hemorrhage can be detected. Children. Severe and unstable intracranial hemorrhage should be reviewed in a timely manner as appropriate until stable. 1-2 month review can understand the final absorption of bleeding. (2) Ischemic hypoxic brain injury: those with a history of neonatal hypoxia, such as intrauterine distress, postpartum asphyxia, or clinical manifestations related to brain injury, should have an ultrasound examination within 24 hours. According to the severity, 72 It can be rechecked every day within 7 hours, and whether the cerebral edema is fully recovered after 7-10 days, and whether there are residual lesions in the brain can be learned after 3 to 4 weeks.
Craniocerebral ultrasound examination
- Examination methods: (1) Ultrasound detection of epidural space lesions in the epidural through bone windows, ultrasound-guided puncture biopsy; (2) Ultrasound-assisted puncture and aspiration of cerebral abscess, hydrocephalus, indwelling catheter, and decompression (3) Ultrasound-guided brain tumors were implanted with radioactive iridium for internal irradiation treatment. Methods The craniocerebral brain of premature infants was examined by using a high-frequency convex array small-scale ultrasound probe, and the maximum blood flow velocity (PS) and resistance index (RI) of the middle cerebral artery (MCA) were measured by color Doppler ultrasound.
Craniocerebral ultrasound related diseases
- Hemorrhagic shock and encephalopathy syndrome, neonatal convulsions, pediatric neural tube defects, pediatric white matter cavernous degeneration syndrome, intracranial hemorrhage in neonates, ischemic hypoxic encephalopathy, pediatric external hydrocephalus, lateral ventricle tumors, Al End harvest disease, brain tumor
Symptoms of craniocerebral ultrasound
- Heavy fainting, thickened arachnoid membrane, coughing with drinking water, lipidosis, moderate coma, clonic-tonicity, exploring objects with mouth, embarrassing reflexes waning or disappearing, hysteria gait, soft waist cannot stand upright