Question 1

The definition of pitch in a multislice scanner, as defined by the International Electrotechnical Commission, states:

Accepted Answer

A)  P = distance the table travels per rotation (d) /total collimation (W) 
B)  P = distance the table travels per rotation (d)  + total collimation (W) 
C)  P = distance the table travels per rotation (d)  * total collimation (W) 
D)  P = total collimation (W) /distance the table travels per rotation (d)  A

Question 2

All of the following terms are used to refer to multislice computed tomography except:

Accepted Answer

A)  multisection computed tomography
B)  multidetector computed tomography
C)  multichannel computed tomography
D)  multisystem computed tomography D

Question 3

Which of the following are physical properties of detectors? 
I. high luminescence efficiency
II. large dynamic range
III. small afterglow

Accepted Answer

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

Question 4

Which of the following are considered categories of approximate cone-beam algorithms? 
I. two-dimensional algorithms
II. three-dimensional algorithms
III. four-dimensional algorithms

Accepted Answer

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

Question 5

As the pitch increases, the image quality:

Accepted Answer

A)  increases
B)  decreases
C)  does not change
D)  has no direct relationship

Question 6

Another application of the dual-source computed tomography scanner includes imaging of obese patients.

Accepted Answer

A) True 
 B)False

Question 7

The first model of the 256-slice four-dimensional computed tomography scanner was developed in:

Accepted Answer

A)  2001
B)  2002
C)  2003
D)  2004

Question 8

In a multislice computed tomography scanner, what type of algorithm can be used if the number of detector rows is small?

Accepted Answer

A)  cone-beam reconstruction
B)  fan-beam reconstruction
C)  x-axis reconstruction
D)  z-axis reconstruction

Question 9

All of the following are materials used in solid-state detectors except:

Accepted Answer

A)  calcium tungsten
B)  gadolinium oxysulfide
C)  gadolinium oxide
D)  yttrium-gadolinium oxide

Question 10

The operator console controls all of the following except:

Accepted Answer

A)  communication
B)  control of the gantry
C)  patient dose
D)  windowing

Question 11

In 1992, the first modern multislice scanner was introduced by:

Accepted Answer

A)  Elscint
B)  GE Healthcare Systems
C)  Siemens Healthcare Systems
D)  Toshiba Healthcare Systems

Question 12

Dual-source computed tomography scanners are primarily used for:

Accepted Answer

A)  cardiac imaging
B)  quantitative imaging
C)  pulmonary imaging
D)  virtual colonoscopy

Question 13

Some clinical benefits of subsecond scanning include: 
I. reduced motion artifacts
II. greater scan coverage
III. reduced patient dose

Accepted Answer

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

Question 14

What is the term used to describe the flipped view used for interpolated reconstruction?

Accepted Answer

A)  complementary data
B)  opposed data
C)  opposite data
D)  reciprocal data

Question 15

Detector row collimation is equal to:

Accepted Answer

A)  D (mm)  + N
B)  D (mm)  - N
C)  D (mm)  *N
D)  D (mm) /N

Question 16

In multislice computed tomography a _________ beam geometry results, rather than a fan beam as in single-slice computed tomography scanners.

Accepted Answer

A)  circular
B)  cone
C)  rectangular
D)  triangular

Question 17

Which of the following are parameters of image quality? 
I. spatial resolution
II. contrast resolution
III. noise

Accepted Answer

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

Question 18

Which of the following is/are types of detectors used in multislice computed tomography scanners? 
I. hybrid detectors
II. nonuniform detectors
III. uniform detectors

Accepted Answer

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

Question 19

Which of the following are considered cone-beam algorithms? 
I. approximate algorithms
II. exact algorithms
III. opposed algorithms

Accepted Answer

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

Question 20

What term is used to describe the resorting of the three-dimensional data collected from the cone-beam acquisition to a set of two-dimensional fan-beam data?

Accepted Answer

A)  binning
B)  rebinning
C)  reformatting
D)  sampling

Exam 12: Multislice Spiralhelical Computed Tomography: Physical Principles and Instrumentation

The definition of pitch in a multislice scanner, as defined by the International Electrotechnical Commission, states:

All of the following terms are used to refer to multislice computed tomography except:

Which of the following are physical properties of detectors? I. high luminescence efficiency II. large dynamic range III. small afterglow

Which of the following are considered categories of approximate cone-beam algorithms? I. two-dimensional algorithms II. three-dimensional algorithms III. four-dimensional algorithms

As the pitch increases, the image quality:

Another application of the dual-source computed tomography scanner includes imaging of obese patients.

The first model of the 256-slice four-dimensional computed tomography scanner was developed in:

In a multislice computed tomography scanner, what type of algorithm can be used if the number of detector rows is small?

All of the following are materials used in solid-state detectors except:

The operator console controls all of the following except:

In 1992, the first modern multislice scanner was introduced by:

Dual-source computed tomography scanners are primarily used for:

Some clinical benefits of subsecond scanning include: I. reduced motion artifacts II. greater scan coverage III. reduced patient dose

What is the term used to describe the flipped view used for interpolated reconstruction?

Detector row collimation is equal to:

In multislice computed tomography a _________ beam geometry results, rather than a fan beam as in single-slice computed tomography scanners.

Which of the following are parameters of image quality? I. spatial resolution II. contrast resolution III. noise

Which of the following is/are types of detectors used in multislice computed tomography scanners? I. hybrid detectors II. nonuniform detectors III. uniform detectors

Which of the following are considered cone-beam algorithms? I. approximate algorithms II. exact algorithms III. opposed algorithms

What term is used to describe the resorting of the three-dimensional data collected from the cone-beam acquisition to a set of two-dimensional fan-beam data?