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In order to determine the potential patient pathway, a healthcare team will use one or more of a variety of possible diagnostic tests. They will also consider any other conditions present.
There are several diagnostic tests that can help in diagnosing hydrocephalus. These same studies can also help evaluate the shunt in case of malfunction or infection.
A sophisticated method of outlining structures within the head using high-frequency sound waves, ultrasound can be used only in infants whose fontanelles are open, since the skull otherwise blocks sound waves.
Computed Tomography (CT) scans use tiny beams of x-ray to outline the skull, brain, and ventricles. In addition to visualising the size and shape of the ventricles, abnormalities such as tumours, cysts, and other pathology can also be seen.
Magnetic resonance imaging (MRI) is a non-invasive diagnostic tool that uses radio signals and a magnet to form computer images of the brain and the ventricles.
Cisternography is a test requiring injection of a small amount of radioactive material into the cerebrospinal fluid. Cisternography differentiates communicating from obstructive hydrocephalus, and determines cerebrospinal fluid flow.
Angiography is a specialised technique in which “contrast material” is injected into the arteries supplying the brain. Abnormal blood vessel problems or pathological lesions can be detected with this technique.
This series of questions and answers helps the healthcare team determine if hydrocephalus is causing a decrease in brain functioning.
With this specialised technique, fluid is injected into the lumbar area of the spine. This procedure is used for individuals with normal pressure hydrocephalus to determine their cerebrospinal fluid absorptive capacity.
A technique used to externally drain cerebrospinal fluid. The test is used to determine if an individual with normal pressure hydrocephalus will improve if a shunt is implanted.
Patients & caregivers: This information is designed to provide you with helpful educational information but is for information purposes only, is not medical advice, and should not be used as an alternative to speaking with your doctor. No representation is made that the information provided is current, complete, or accurate. Medtronic does not assume any responsibility for persons relying on the information provided. Be sure to discuss questions specific to your health and treatments with a healthcare professional. For more information please speak to your healthcare professional.