2. QUESTION 1: name the a) study and b) orientation Answers: A) This is a CT scan of the head B) This is in the coronal plane * The dark areas are the paranasal sinuses; the white parts are the bones of the skull and jaw, and the gray parts are soft tissue in the head and neck

3. QUESTION 2: name the a) study and b) orientation Answers: A) This is a T1-weighted MR image B) This is in the axial plane * Notice that fat is bright and white matter is brighter than gray matter; CSF is dark

4. QUESTION 3: name the a) study and b) orientation Answers: A)This is a CT scan of the head B)This is in the axial plane * Notice that bone is bright (bright = dense); CSF which is much less dense is dark; brain tissue is gray

5. QUESTION 4: name the a) study and b) orientation Answers: A)This is a T2-weighted MR image of the brain B)This is a coronal view *Notice that CSF is white and white matter is darker than gray matter

6. QUESTION 5: name the a) study and b) orientation Answers: -A) This is a T1-weighted MR image of the head -B) This is a sagittal view Notice that the scalp is bright (fat is bright on T1) and white matter is brighter than gray matter; CSF is dark

7. QUESTION 6: a) study, b) orientation, and c) pathology Answers: a)This is a CT scan of the brain b)This is in the axial plane c)There is a dark region in the left hemisphere - this is a stroke! It is dark because the dying brain tissue swells with fluid and becomes less dense over time. Also, notice the mass effect!

8. QUESTION 7: a) study, b) orientation, and c) pathology Answers: a)This is a T2- weighted MR image of the brain b)This is in the axial plane c)There is a huge brain tumor in the left occipital lobe!