13K views · 211 reactions | Subarachnoid Space. The subarachnoid space consists of the cerebrospinal fluid (CSF), major blood vessels, and cisterns. The cisterns are enlarged pockets of CSF created due to the separation of the arachnoid mater from the pia mater based on the anatomy of the brain and spinal cord surface. | Dr. Najeeb | Facebook

Posterior cortical atrophy (PCA) means ‘back of the brain shrinkage’. It’s a rare form of dementia caused by damage to cells at the back of the brain, which predominantly affects the processing of visual and spatial information. In this scan, you can see the damage spreading through the brain over time. Eventually, a person’s memory, speech and problem-solving skills will be affected. As time passes, people will need more support in their daily life and help to look after themselves. This often