What are the 3 main anatomical divisions of neuroradiology?
Head & Neck
Neuro CT exams are usually performed without contrast. Name three exceptions
- CT of head and neck looking for infection or malignancy
- CT angiograms of the head and neck
- CT venograms of the head and neck
Give 3 major indications for MR with IV gadolinium contrast
- Primary tumors or metastatic disease
- Demyelinating disease (MS)
Is contrast usually necessary for MR evaluation of stroke?
Is MRA of the head usually done with or without contrast?
Is MRA of the neck or MRV usually done with or without contrast?
MRI contrast (gadolinium) is usually well-tolerated. Name one common exception to this rule.
End-stage renal disease
Give several differentials for acute intracranial hemorrhage
- underlying neoplasm
- vascular malformation
- cerebral amyloid angioplasty
- venous thrombosis
- drug abuse
- hemorrhagic conversion of infarct
On CT, is acute hemorrhage hyperdense (bright) or hypodense (dark)?
Are acute infarcts usually apparent on CT?
No. Get an MRI if clinical suspicion supports it.
Which MRI sequence is best for finding acute ischemic infarct?
DWI (diffusion weighted imaging)
What imaging modality is most commonly used for initial screening of spine trauma?