Normal Brain CT Scan & Hydocephalus Nabilah binti Dato’ Ayob سایت جامع رادیولوژی WWW.RADIOLOGYHA.COM

Brain CT scan Computed tomography (CT), also called a CAT scan, uses x-rays to take pictures of the head from many different angles. CT scans are widely used and less expensive than other scanning technologies. A CT scan shows changes in bone better than any other imaging method. It is also the only scanning technique that shows images of bone, blood vessels and soft tissue at the same time.

Indication CT scans are used to help diagnose many medical conditions including strokes, head trauma, tumors, hydrocephalus, blood clots, cerebral atrophy, internal bleeding, skull fractures, brain aneurysms, and hearing loss.

Preparation Don’t need to restrict the intake of any food or fluids before the scan. However, if contrast is needed, you may be asked not to eat or drink anything for 4-6 hours before the test. You will be asked to remove your clothing, jewelry and any other items that may interfere with the scan such as eyeglasses or dentures. Any  allergies, asthma or difficulty with breathing. Sensitivity Test for the contrast Inform Consent form is sign after explanation given  must be signed before the test started.

Complication Allergic reactions to iodine can include hives, itching, nausea, breathing difficulty or other symptoms Radiation generated from x-rays is potentially harmful

A. Orbit B. Sphenoid Sinus C. Temporal Lobe D. External Auditory Canal E. Mastoid Air Cells F. Cerebellar Hemisphere

A. Frontal Lobe B. Frontal Bone (Superior Surface of Orbital Part) C. Dorsum Sellae D. Basilar Artery E. Temporal Lobe F. Mastoid Air Cells G. Cerebellar Hemisphere

A. Frontal Lobe B. Sylvian Fissure C. Temporal Lobe D. Suprasellar Cistern E. Midbrain F. Fourth Ventricle G. Cerebellar Hemisphere

A. Falx Cerebri B. Frontal Lobe C. Anterior Horn of Lateral Ventricle D. Third Ventricle E. Quadrigeminal Plate Cistern F. Cerebellum

A. Anterior Horn of the Lateral Ventricle B. Caudate Nucleus C. Anterior Limb of the Internal Capsule D. Putamen and Globus Pallidus E. Posterior Limb of the Internal Capsule F. Third Ventricle G. Quadrigeminal Plate Cistern H. Cerebellar Vermis I. Occipital Lobe

A. Falx Cerebri B. Frontal Lobe C. Body of the Lateral Ventricle D. Splenium of the Corpus Callosum E. Parietal Lobe F. Occipital Lobe G. Superior Sagittal Sinus

A. Falx Cerebri B. Sulcus C. Gyrus D. Superior Sagittal Sinus

Hydrocephalus

Hydrocephalus Expansion of the ventricular system on the basis of an increase in the volume of CSF May be due to: Overproduction of CSF (rare) Underabsorption of the outflow of CSF Obstruction of the outflow of CSF from the ventricles

Types of Hydrocephalus Obstructive Communicating (extraventricular) Non-communicating (intraventricular) Non-obstructive Over production of CSF (rare) Normal pressure Hydrocephalus a buildup of cerebrospinal fluid puts pressure on the brain. (due to aging)

Communicating hydrocephalus with surrounding "atrophy" and increased periventricular and deep white matter signal