Question 1

Which of the following are recommended by the Center for Devices and Radiological Health as computed tomography dose descriptors? 
I. computed tomography dose index
II. multiple-scan average dose
III. dose profile

Accepted Answer

A) I and II 
B) II and III 
C) I and III 
D) I, II, and III

Question 2

Match the following units of dose measurement. All answer selections will be used just once.
-rem

Accepted Answer

A) old unit of effective dose 
B) conventional unit of exposure 
C) old unit of absorbed dose 
D) SI unit of effective dose 
E) SI unit of absorbed dose

Question 3

What is the term used to describe a ratio of the difference the table travels per revolution to nominal beam collimation?

Accepted Answer

A) dose-length product 
B) pitch 
C) scan ratio 
D) tilt ratio

Question 4

Radiation bioeffects are classified as: I. stochastic
II. deterministic
III. nonstochastic

Accepted Answer

A) I and II 
B) II and III 
C) I and III 
D) I, II, and III

Question 5

What is the term used to describe the instrumentation and methods used to measure patient dose from a computed tomography scanner?

Accepted Answer

A) computed tomography dosimetry 
B) computed tomography absorptiometry 
C) radiation intensity 
D) dose distribution

Question 6

Which of the following are factors of dose that can be controlled by the technologist? 
I. technique factors
II. patient centering
III. x-ray beam collimation

Accepted Answer

A) I and II 
B) II and III 
C) I and III 
D) I, II, and III

Question 7

Match the following units of dose measurement. All answer selections will be used just once.
-Sievert

Accepted Answer

A) old unit of effective dose 
B) conventional unit of exposure 
C) old unit of absorbed dose 
D) SI unit of effective dose 
E) SI unit of absorbed dose

Question 8

Phantoms are not used for the process of computed tomography dose measurement.

Accepted Answer

A) True 
 B)False

Question 9

What is/are the unit(s) of absorbed dose? 
I. rad (r)
II. gray (Gy)
III. Sievert (Sv)

Accepted Answer

A) I and II 
B) II and III 
C) I and III 
D) I, II, and III

Exam 10: Radiation Dose in Computed Tomography

Which of the following are recommended by the Center for Devices and Radiological Health as computed tomography dose descriptors? I. computed tomography dose index II. multiple-scan average dose III. dose profile

Match the following units of dose measurement. All answer selections will be used just once. -rem

What is the term used to describe a ratio of the difference the table travels per revolution to nominal beam collimation?

Radiation bioeffects are classified as: I. stochastic II. deterministic III. nonstochastic

What is the term used to describe the instrumentation and methods used to measure patient dose from a computed tomography scanner?

Which of the following are factors of dose that can be controlled by the technologist? I. technique factors II. patient centering III. x-ray beam collimation

Match the following units of dose measurement. All answer selections will be used just once. -Sievert

Phantoms are not used for the process of computed tomography dose measurement.

What is/are the unit(s) of absorbed dose? I. rad (r) II. gray (Gy) III. Sievert (Sv)