Brain scan technique using high-frequency sound waves
Cranial ultrasound
Purpose
technique to scan brain
Cranial ultrasound is a technique for scanning the brain using high-frequency sound waves. It is used almost exclusively in babies because their fontanelle (the soft spot on the skull) provides an "acoustic window".
A different form of ultrasound-based brain scanning, transcranial Doppler, can be used in any age group. This uses Doppler ultrasound to assess blood flow through the major arteries in the brain, and can scan through bone. It is not usual for this technique to be referred to simply as "cranial ultrasound". Additionally, cranial ultrasound can be used for intra-operative imaging in adults undergoing neurosurgery once the skull has been opened, for example to help identify the margins of a tumour.[1]
^Dumain T (4 February 2022). Melinosky C (ed.). "What Is a Cranial Ultrasound?". WedMD.
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Cranialultrasound is a technique for scanning the brain using high-frequency sound waves. It is used almost exclusively in babies because their fontanelle...
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provided information about dilation of the lateral, 3rd and cranial cerebral aqueduct. Ultrasound through the molera was also useful in revealing ventriculomegaly...
infant human skull comprising soft membranous gaps (sutures) between the cranial bones that make up the calvaria of a fetus or an infant. Fontanelles allow...
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present. The increased pressure leads to compression and traction of the cranial nerves, a group of nerves that arise from the brain stem and supply the...
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false-positive result. To improve accuracy, ultrasound-guided techniques were developed. The original ultrasound-guided technique for injection of the GON...
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vaginal bleeding during pregnancy. As this is nonspecific in areas where ultrasound is not available the diagnosis was often only discovered during surgery...
(e.g. cerebral venous sinus thrombosis). Nonpenetrating and penetrating cranial trauma can also be common causes of intracerebral hemorrhage. Computed...
arteries, a carotid ultrasound scan may demonstrate stenosis, or narrowing, of the carotid artery. For people with extra-cranial carotid stenosis, if...
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cause. Torticollis can be caused by damage to the trochlear nerve (fourth cranial nerve), which supplies the superior oblique muscle of the eye. The superior...
London's Hammersmith Hospital in 1972, where Lilly pioneered the use of cranialultrasound and, later, magnetic resonance imaging to assess the brains of newborns...