Temporal Bones/Sinuses

Question 2

Soft Tissue changes are best visualized with which image window?

Answer 2

400 ww and 40 wl

This windowing technique is commonly used to view soft tissues in imaging.

Question 3

What is the most common image window for viewing images in the standard algorithm?

Answer 3

400 ww and 40 wl

This windowing is optimal for producing images of soft tissues.

Question 4

Which imaging windows would best visualize fractures of the cranium and facial bones?

Answer 4

2500 WW and 600 wl

These settings enhance the visibility of bony structures.

Question 5

An evaluation of known cerebral metastasis indicates which CT imaging procedure?

Answer 5

CT head without and with contrast

Contrast is essential for assessing cerebral lesions.

Question 6

What is the preferred modality for subimaging and mass in the brain, including cerebral metastasis?

Answer 6

MRI

MRI provides superior detail for soft tissue evaluation.

Question 7

Which slice parameters are preferred for visualization of the posterior fossa of the cranium?

Answer 7

2.5 mm slices with matching slice interval

Increased spatial resolution is necessary for imaging the posterior fossa.

Question 8

What is the correct CT protocol for a patient with a dental abscess suspected of having an infection in the brain?

Answer 8

CT head without and with contrast

Potential brain infections always necessitate the use of contrast.

Question 9

Which reconstruction slice parameters will produce images with the least amount of image noise in the brain?

Answer 9

5.0 mm slices in the standard algorithm

Thicker slices and smoothing algorithms help reduce image noise.

Question 10

Compared to 1.25 mm slices, 3.75 mm slices will result in which of the following?

Answer 10

Fewer images

Thicker slices lead to less spatial resolution and less image noise but do not change patient dose.