Question 1

What detector innovation allows for acquisition of both low and high energies for every exposure in CT imaging?

Accepted Answer

A)  Stellar detector 
B)  Third-generation detector 
C)  Photon counting detector 
D)  Dual-layer detector 
A)  Stellar detector 
B)  Third-generation detector 
C)  Photon counting detector 
D)  Dual-layer detector

Question 2

All of the following are radiation beams produced by an X-ray tube designed for CT except:

Accepted Answer

A)  homogeneous beam. 
B)  heterogeneous beam. 
C)  polychromatic beam. 
D)  polyenergetic beam. 
A)  homogeneous beam. 
B)  heterogeneous beam. 
C)  polychromatic beam. 
D)  polyenergetic beam.

Question 3

The following crystals have been used in scintillation CT detectors except:

Accepted Answer

A)  bismuth germinate. 
B)  calcium tungstate. 
C)  calcium fluoride. 
D)  sodium iodide (NaI). 
A)  bismuth germinate. 
B)  calcium tungstate. 
C)  calcium fluoride. 
D)  sodium iodide (NaI).

Question 4

The scanner that uses an electron gun to "shoot" electrons toward a target ring is the:

Accepted Answer

A)  fifth-generation scanner. 
B)  fourth-generation scanner. 
C)  third-generation scanner. 
D)  spiral/helical scanner. 
A)  fifth-generation scanner. 
B)  fourth-generation scanner. 
C)  third-generation scanner. 
D)  spiral/helical scanner.

Question 5

The main purpose of a filter used in CT is to:

Accepted Answer

A)  reduce the intensity of the beam at the detector. 
B)  make the beam less uniform at the detector. 
C)  decrease the mean energy at the detector. 
D)  protect the patient. 
A)  reduce the intensity of the beam at the detector. 
B)  make the beam less uniform at the detector. 
C)  decrease the mean energy at the detector. 
D)  protect the patient.

What detector innovation allows for acquisition of both low and high energies for every exposure in CT imaging?

All of the following are radiation beams produced by an X-ray tube designed for CT except:

The following crystals have been used in scintillation CT detectors except:

The scanner that uses an electron gun to "shoot" electrons toward a target ring is the:

The main purpose of a filter used in CT is to:

Computed Tomography: an Overview

Digital Image Processing

Physical Principles of Computed Tomography

Image Reconstruction

Iterative Reconstruction Basics

Basic Instrumentation

Image Postprocessing and Visualization Tools

Image Quality

Radiation Dose in Computed Tomography

Multislice Computed Tomography: Physical Principles and Instrumentation

Other Technical Applications of Computed Tomography Imaging: Basic Principles

Three-Dimensional Computed Tomography: Basic Concepts

Positron Emission Tomographyct Petct and Single-Photon Emission Computed Tomographyct Spectct Hybrid Scanners

Computed Tomography of the Head, Cerebral Vessels, Neck, and Spine

Computed Tomography of the Body

Pediatric Computed Tomography

Quality Control for Computed Tomography Scanners

Filters

Exam 4: Data Acquisition Concepts

What detector innovation allows for acquisition of both low and high energies for every exposure in CT imaging?

All of the following are radiation beams produced by an X-ray tube designed for CT except:

The following crystals have been used in scintillation CT detectors except:

The scanner that uses an electron gun to "shoot" electrons toward a target ring is the:

The main purpose of a filter used in CT is to:

Computed Tomography: an Overview

Digital Image Processing

Physical Principles of Computed Tomography

Image Reconstruction

Iterative Reconstruction Basics

Basic Instrumentation

Image Postprocessing and Visualization Tools

Image Quality

Radiation Dose in Computed Tomography

Multislice Computed Tomography: Physical Principles and Instrumentation

Other Technical Applications of Computed Tomography Imaging: Basic Principles

Three-Dimensional Computed Tomography: Basic Concepts

Positron Emission Tomographyct Petct and Single-Photon Emission Computed Tomographyct Spectct Hybrid Scanners

Computed Tomography of the Head, Cerebral Vessels, Neck, and Spine

Computed Tomography of the Body

Pediatric Computed Tomography

Quality Control for Computed Tomography Scanners

Filters