Deck 7: Basic Instrumentation

Question 1

Which of the following is part of the imaging system?

A)the computed tomography control console
B)the x-ray tube and detectors
C)the cathode ray tube display device
D)the central processing unit

Answer 1

the x-ray tube and detectors

Question 2

Quality control equipment is part of the equipment specifications for computed tomography.

Answer 2

True

Question 3

Typical operating modes include priority scan mode and static scan mode.

Answer 3

False

Question 4

The opening in the gantry in which the patient is positioned during scanning is called the:

A)rotating frame
B)isocenter
C)gantry aperture
D)positioning hole

Question 5

The computer system for computed tomography includes all of the following except:

A)detector electronics
B)input-output devices
C)the central processing unit
D)array processors and back-projector

Question 6

The following are components of the imaging system except the:

A)x-ray tube and generator
B)collimator and filter
C)detector and detector electronics
D)laser printer

Question 7

All of the following are purposes of the image display, recording, storage, and communication system except:

A)displays the output digital image
B)provides a hard copy
C)facilitates storage
D)enables scanning procedures

Question 8

The design that incorporates the high-voltage generator on the rotating frame of the computed tomography gantry eliminates:

A)the need for long high-tension cables
B)the need for short high-tension cables
C)the detectors from within the gantry
D)the need for any cables

Question 9

The computer room generally houses the film recording equipment.

Question 10

Which of the following does the computer system perform?

A)detects radiation
B)image manipulation
C)display the output image
D)provides a hard copy

Question 11

Most scanners have a gantry aperture of about:

A)70 mm
B)70 inches
C)100 cm
D)70 cm.

Question 12

Communications refers to electronic networking or connectivity with use of a local-area or wide-area network.

Question 13

In general, the tilting range of a computed tomography gantry is about:

A)±12 degrees to ±30 degrees
B)±2 degrees to ±5 degrees
C)±5 degrees to ±5 degrees
D)No tilting of the gantry is possible

Question 14

The imaging system components are located in the:

A)scanner room
B)radiologist viewing area
C)operator room
D)computer room

Question 15

Which of the following are major systems in the basic equipment configuration for computed tomography? I. imaging system
II) computer system
III) image display, recording, storage, and communication system

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

Question 16

The x-ray generator for computed tomography scanners is usually a:

A)single-phase, half-wave rectified unit
B)high-frequency unit
C)three-phase, six-pulse generator
D)three-phase, 12-pulse generator

Question 17

The computer system receives _________ data from the data acquisition system.

A)analog
B)digital
C)manipulated
D)hard copy

Question 18

The touch screen allows the technologist to enter data into the computer without the keyboard.

Question 19

Which of the following is where images are stored in a filmless imaging department?

A)hospital information system
B)radiology information system
C)picture archiving and communication system
D)data acquisition system

Question 20

The purpose of the imaging system is to: I. produce x rays
II) shape and filter the x ray
III) detect and measure the radiation passing through the cross-section

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

Question 21

Which room generally houses the gantry and patient couch and should be large enough to accommodate gurneys and emergency equipment?

A)scanning room
B)computer room
C)control room
D)digital room

Question 22

Which of the following allows the technologist to alter picture contrast?

A)touch panel
B)floating keyboard alphanumerical keys
C)floppy disk drive
D)window controls

Question 23

Which of the following is used to store computed tomography images? I. VHS tapes
II) magnetic disks
III) laser optical disks

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

Question 24

The following are accessories for a computed tomography scanner except:

A)axial head holder
B)knee support pad
C)array processor
D)pediatric cradle

Question 25

The computed tomography gantry houses all of the following except:

A)the x-ray tube and generator
B)the central processing unit
C)the detector electronics
D)collimators

Question 26

Which of the following allows the technologist to devote more time to the scanning procedure and the needs of the patient?

A)the television monitor
B)control functions
C)floppy disks
D)the line printer

Question 27

The couch top (table top) of a computed tomography scanner table should have the following: I. low radiation absorption characteristics
II) made of carbon fiber
III) excellent vibration-damping features

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

Question 28

Which of the following supports the patient during a computed tomography examination?

A)life-support equipment
B)the technologist and radiologist
C)the gantry aperture
D)the computed tomography table or patient couch

Question 29

Software modules for computed tomography scanners are intended to: I. facilitate modification of existing packages
II) update existing software
III) revise existing software

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

Question 30

Which of the following consists of alphanumerical and special function keys?

A)video display monitor
B)touch panel
C)floating keyboard
D)floppy disk drive

Question 31

The typical matrix size of a typical computed tomography image is:

A)32 *32 * 8 bytes deep
B)128 *128 *8 bytes deep
C)56 * 256 * 10 bytes deep
D)512 * 512 * 8 bytes deep

Question 32

Which of the following houses the host computer and other peripheral computing equipment?

A)the computer room
B)the control room
C)the operator and observer room
D)the scanning room

Question 33

All of the following are categories of computed tomography software except:

A)reconstruction software
B)detector software
C)preprocessing software
D)image postprocessing software

Question 34

The main component(s) of an integrated console for a computed tomography scanner is(are): I. a floating keyboard
II) a high-capacity disk drive
III) a video display monitor

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

Question 35

Which of the following is a hardware option for computed tomography scanners?

A)independent work stations
B)bone mineral analysis package
C)three-dimensional reconstruction package
D)xenon computed tomography

Question 36

All of the following are examples of image visualization and analysis software tools except:

A)computed tomography view
B)multiplanar reformation
C)MasterCut
D)liquid crystal display

Question 37

Computer architectures that have been used over time include: I. pipeline processing
II) parallel processing
III) distributed processing

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

Question 38

The concept of modular design in computed tomography scanner development is intended to:

A)simplify technologist operation
B)simplify upgrading of scanners
C)simplify radiologist interpretation of images
D)make the patient more comfortable

Question 39

The operating system used in some computed tomography scanners is:

A)MS DOS
B)MacOS
C)UNIX compatible
D)OS/2