Post Processing

Question 1

MPVRs multiplanar volume reconstruction

Answer 1

•min-IPs minimum intensity projections

Question 2

MIP

Answer 2

•Maximum intensity projection

Question 3

MPR

Answer 3

• multiplanar reformation
• displaying CT images in a different orientation from the original
• different anatomic plane

Question 4

Transmitted intensity

Answer 4

•the amount of energy that passes through the patient onto the detector

Question 5

Retrospective

Answer 5

•images reconstructed a second time while adjusting technical factors

Question 6

Ring artifacts are associated with

Answer 6

•third generation CT scanners “rotate-rotate”

Question 7

Short vs long gray scale regarding wider vs narrow window

Answer 7

• wider window = longer scale

* narrow window = shorter scale

Question 8

Bone window WW? WL?

Answer 8

• WW 2000

* WL 250

Question 9

Window level low vs high brightness

Answer 9

• low WL makes the image appear brighter

* high WL makes the image appear darker

Question 10

The best window to visualize bone detail is

Answer 10

•1299 to 2000

Question 11

How to minimize streak artifact due to beam hardening

Answer 11

• increase kVp

* very thin slices