15. Brain

1Which of the following structures normally enhance on CT?
  • (a) Choroid plexus
  • (b) Cochlea
  • (c) Middle cerebral artery
  • (d) Anterior pituitary gland
2Which of the following are common causes of acute subarachnoid haemorrhage?
  • (a) Arterial aneurysm
  • (b) Pituitary macroadenomas
  • (c) Arteriovenous malformation
  • (d) Chiari malformation
3Which of the following are causes of acute restricted diffusion on MRI?
  • (a) Arachnoid cyst
  • (b) Cystic brain metastasis
  • (c) Turbulent cerebrospinal fluid flow
  • (d) Pyogenic abcess
4On a CT scan, which of the following statements are true?
  • (a) The pineal gland is midline
  • (b) Calcification is commonly seen in the choroid within the lateral ventricles
  • (c) The posterior fossa structures can be obscured by artefact from adjacent bone
  • (d) Subarachnoid blood can be identified with greater sensitivity than on MRI
5Which of the following statements are true?
  • (a) Herpes encephalitis is first identified in the occipital lobes
  • (b) Extradural haematomas are rarely associated with skull fractures
  • (c) Extradural haematomas are biconvex in shape
  • (d) Subdural haematomas are never bilateral
6Causes of a ring-enhancing brain lesion include which of the following?
  • (a) Metastasis
  • (b) Tuberculoma
  • (c) Subacute haematoma
  • (d) Subacute infarct
7Which of these tumour–location associations are correct?
  • (a) High grade glioma (glioblastoma multiforme) – intra-axial
  • (b) Meningioma – intra-axial
  • (c) Oligodendroglioma – intra-axial
  • (d) Vestibular schwannoma - extra-axial