Normal Anatomy and Common Variants
10.1055/b-0034-102654 Normal Anatomy and Common Variants Normal Intracranial Anatomy The frontal lobe is demarcated posteriorly from the parietal lobe by the central sulcus ( Fig. 1.1 ). On axial magnetic…
Dementia and Degenerative Disease
10.1055/b-0034-102662 Dementia and Degenerative Disease Alzheimer Disease Alzheimer disease is today the most common diagnosed cause of dementia. Histology is nonspecific. CT and MR imaging signs are nonspecific, with generalized…
Hemorrhage
10.1055/b-0034-102658 Hemorrhage Parenchymal Hemorrhage Hemorrhage has a specific but varied appearance on MR, dependent on time frame ( Fig. 1.40 ). The appearance is much more straightforward on CT. In…
Inherited Metabolic Disorders
10.1055/b-0034-102656 Inherited Metabolic Disorders This section discusses a diverse group of disorders due to inborn errors of metabolism. Imaging is often suggestive of the general diagnosis, but rarely specific for…
Acquired Metabolic, Systemic, and Toxic Disorders
10.1055/b-0034-102657 Acquired Metabolic, Systemic, and Toxic Disorders Acute Hypertensive Encephalopathy This entity, also known by the term posterior reversible encephalopathy syndrome (PRES), is caused by acute severe hypertension. There is…
Herniation
10.1055/b-0034-102660 Herniation Subfalcine herniation is the most common brain herniation, and is caused by a supratentorial mass on one side that shifts brain to the opposite side. Herniation of brain…
