Lecture 8- Neuroimaging

Question 1

Head CT Anatomy

what densities can brain lesions be?

Answer 1

any! hypo, hyper, or iso dense

Question 2

Head CT Anatomy

describe windowing

Answer 2

manipulating densities to make structures appear differently

Question 3

Head CT in Emergency Setting

Key things to look for

Answer 3

• white densities (bleeding)
• mass effect/displacement of normal anatomy
• loss of normal tissue contrast?

Question 4

Shoulder Exam

when evaluating for mass effect, what constitutes an emergency?

Answer 4

shift of midline structures