Part 11

Question 1

What is a two-dimensional grid of numbers arranged in rows and columns?

Answer 1

Matrix

Question 2

What is a multiplanar reformation technique that displays only the maximum pixel value along a ray traced through the object to the viewer’s assumed perspective in front of the viewing monitor?

Answer 2

Maximum Intensity Projection (MIP)

Question 3

What does MIP stand for?

Answer 3

Maximum Intensity Projection (MIP)

Question 4

What is a common measurement during CT perfusion studies of the brain?

Answer 4

Mean Transit Time (MTT)

Question 5

What does MTT stand for?

Answer 5

Mean Transit Time (MTT)

Question 6

What refers to the average transit time, in seconds, needed for blood to pass through a given region of brain tissue?

Answer 6

Mean Transit Time (MTT)

Question 7

What is a multiplanar reformation technique that displays the minimum pixel value along each ray to the viewer?

Answer 7

Minimum Intensity Projection (min-IP)

Question 8

What does min-IP stand for?

Answer 8

Minimum Intensity Projection (min-IP)

Question 9

What is an artifact that occurs when patient motion between consecutive acquisitions causes misalignment of data and the potential loss of anatomic information?

Answer 9

Misregistration

Question 10

What is a graphical representation of a CT system’s response to a spatial frequency that serves as a measurement of the system’s in-plane spatial resolution?

Answer 10

Modulation Transfer Function (MTF)

Question 11

What does MTF stand for?

Answer 11

Modulation Transfer Function (MTF)

Question 12

What consists of a uniform photon energy; used in CT to describe a beam of x-radiation?

Answer 12

Monoenergetic

Question 13

What is a CT system with a detector array capable of acquiring more than one section for each gantry rotation?

Answer 13

Multi-slice CT (MSCT)

Question 14

What does MSCT stand for?

Answer 14

Multi-slice CT (MSCT)

Question 15

What may also be referred to as multidetector CT (MDCT)?

Answer 15

Multi-slice CT (MSCT)