<unk>  uses a series of X-rays in a CT scan of the<unk>  taken from many different directions; the resulting data is transformed into a series of cross sections of the brain using a<unk>  program. CT images of the<unk>  are used to investigate and diagnose brain injuries and other neurological conditions, as well as other conditions involving the skull or sinuses; it used to guide some brain surgery procedures as well. CT scans expose the person getting them to ionizing radiation which has a risk of eventually causing cancer; some people have allergic reactions to contrast agents that are used in some CT procedures.
Computed tomography of the head
Brain biopsy
Hemoencephalography
Magnetic resonance imaging of the brain
Lumbar puncture
Radionuclide cisternogram
Ultrasound-guided lumbar puncture
Intracranial pressure monitoring