Deck 16: Additional Equipment

Question 1

The radiographer should stand at least _________ away from the patient and x-ray tube when making an exposure using mobile radiographic equipment

A) 2 feet
B) 4 feet
C) 6 feet
D) 10 feet

Answer 1

6 feet

Question 2

Which of the following provides both static and dynamic images along with 2D and 3D during surgical procedures.

A) Bi-plane
B) DR mobile imaging
C) O-arm imaging
D) Mini C-arm imaging

Answer 2

O-arm imaging

Question 3

The dedicated unit designed to image the thorax in the upright position is the

A) chest
B) panorex
C) mammography
D) bone densitometry

Answer 3

chest

Question 4

Which of the following mobile radiographic units does not need to be plugged into the wall while producing x-rays?

A) Battery-powered mobile unit.
B) Capacitor discharge mobile unit.
C) Direct-power mobile unit.
D) High-frequency mobile unit.

Question 5

Which of the following mobile units produce consistent radiation output, similar to a single-phase generator?

A) Battery-powered
B) Capacitor discharge
C) Direct-power
D) High-frequency

Question 6

Challenges when performing mobile radiographic imaging include

A) having to use SIDs other than 40 inches or 72 inches
B) difficulty minimizing off-level grid cutoff
C) patient condition
D) all of these

Question 7

Unless otherwise required, during C-arm fluoroscopic procedures the x-ray tube should be located.

A) beneath the patient
B) to the right side of the patient
C) above the patient
D) to the left side of the patient

Question 8

A common site for mobile fluoroscopy is

A) in the patient's room
B) in the radiology department
C) in nursing home
D) in the operating room

Question 9

This type of radiographic mobile unit is very lightweight and produces a consistent radiation output.

A) Battery-powered
B) Capacitor discharge
C) Direct-power
D) High-frequency

Question 10

DXA stands for

A) double x-ray absorption
B) density x-ray attenuation
C) dual energy x-ray absorptiometry
D) double density x-ray attenuation

Question 11

Why would radiographic or fluoroscopic equipment need to be mobile?

A) patient too sick
B) patient in surgery
C) patient is immobile
D) all of these

Question 12

This dedicated unit is used to determine if a patient's bone mineral density or mass is normal or low (osteoporosis).

A) Chest
B) Panorex
C) Mammography
D) Bone densitometry

Question 13

Which of the following provides a lower fluoroscopic dose rate and greater flexibility while imaging the extremities?

A) Bi-plane
B) DR mobile imaging
C) O-arm imaging
D) Mini C-arm imaging

Question 14

When a panorex examination is being performed, the x-ray tube and image receptor move

A) from side to side
B) around the patient
C) up and down
D) very little

Question 15

Which of the following is/are unique features of interventional fluoroscopic units?

A) Bi-plane technology
B) Cine fluoroscopic images at 60 frames/sec
C) Digital subtraction
D) All of these

Question 16

Which of the following individuals need to be shielded during mobile radiographic procedures?

A) The patient.
B) The nurse who must stay by the patient.
C) The student radiographer.
D) All should be shielded.

Question 17

This type of dedicated unit is typically used to image the mandible and teeth

A) Chest
B) Panorex
C) Mammography
D) Bone densitometry

Question 18

There are generally _____ sets of locks on mobile C-arm fluoroscopic equipment.

A) 1
B) 2
C) 3
D) 6

Question 19

When operating mobile C-arm fluoroscopic equipment, it is the _____________ responsibility to monitor and apply radiation safety measures.

A) surgeon's
B) radiographer's
C) radiologist's
D) anesthesiologist's

Question 20

Bone densitometry uses x-rays to determine the level of bone density because

A) different density tissues absorb radiation differently
B) x-rays are very good at imaging the bony anatomy
C) A and B
D) none of these

Question 21

Three-dimensional mammography is also known as:

A) Bi-plane imaging
B) O-arm imaging
C) Tomographic imaging
D) Digital breast tomosynthesis

Question 22

Breast compression

A) improves image contrast
B) improves spatial resolution
C) reduces magnification
D) all of these

Question 23

The goal of linear tomography is to

A) sharpen the anatomic structures above and below the level of interest
B) sharpen the anatomic structures within the level of interest
C) blur the anatomic structures above and below the level of interest
D) blur the anatomic structures within the level of interest

Question 24

To make the breast tissue a more uniform thickness, the dedicated mammography unit includes a _______________ device.

A) pancake
B) compression
C) flattening
D) magnification

Question 25

The focal spot size of a dedicated mammography unit measures________________

A) 0.1-0.3 mm
B) 1-3 mm
C) 0.1-0.3 mm.
D) 1-3 mm.

Question 26

The fixed point that is placed at the level of the anatomic structures to be imaged during tomography is the

A) tomographic amplitude
B) exposure amplitude
C) fulcrum
D) focal plane

Question 27

The arc created during the total movement of the x-ray tube during tomography is the

A) tomographic angle
B) exposure angle
C) fulcrum
D) focal plane

Question 28

During linear tomography, the tube and image receptor

A) move in the same direction along a straight line
B) move in opposite directions along a straight line
C) move in the same direction along a circular path
D) move in opposite directions along a circular path

Question 29

Breast imaging is done on this type of dedicated radiographic unit

A) Chest
B) Panorex
C) Mammography
D) Bone densitometry

Question 30

The kVp is very low because of the breast's

A) size
B) low subject contrast
C) high subject contrast
D) density

Question 31

The most common areas scanned for bone densitometry are the

A) hip and cervical spine
B) lumbar spine and skull
C) shoulder and thoracic spine
D) hip and lumbar spine

Question 32

The grid used for mammography has a

A) lower ratio and lower frequency
B) lower ratio and higher frequency
C) higher ratio and lower frequency
D) higher ration and higher frequency

Question 33

DXA uses an x-ray tube and a(n)

A) scintillation detector
B) photostimulable image receptor
C) image intensifier
D) flat panel detector

Question 34

The horizontal level that extends through the body that includes the pivot point is the

A) tomographic amplitude
B) exposure amplitude
C) fulcrum
D) focal plane

Question 35

To produce the low kVp photons needed for mammography, the tube anode target is made of

A) molybdenum
B) beryllium
C) rhodium
D) a and c

Question 36

What are the advantages of full-field digital mammography?
1) Improved SNR
2) Post processing capabilities
3) Increased contrast resolution

A) improved SNR and post processing capabilities only
B) improved SNR and increased contrast resolution only
C) post processing capabilities and increased contrast resolution only
D) improved SNR, post processing capabilities, and increased contrast resolution

Question 37

Mammography uses a ___________ exposure.

A) low kVp
B) mid-range kVp
C) high kVp
D) low mAs

Question 38

Digital breast tomosynthesis (DBT) improves the detection of abnormal tissue and reduces the incidences of:

A) true positives
B) true negatives
C) false negatives
D) false positives

Question 39

The radiation dose to the breast ______________________ when magnification techniques are used.

A) is lower
B) is higher
C) remains the same

Question 40

The T-score from the DXA data analysis indicates

A) how large the patient is compared with young, healthy adults
B) how large the patient is compared with adults of the same age and gender
C) fracture risk resulting from osteoporosis compared with young, healthy adults
D) fracture risk resulting from osteoporosis compared with adults the same age and gender

Question 41

The battery-powered mobile radiographic unit produces consistent radiation output, similar to a single-phase generator.

Question 42

To create 3-D images of the breast, the x-ray tube moves over the compressed breast from one side to the other and creates multiple images of the breast from different angles.

Question 43

During digital subtraction techniques, overlying structures such as bone and soft tissue are removed from the subtracted image, so the vasculature is better visualized.

Question 44

The mammography unit's x-ray tube window is made of beryllium.

Question 45

As compared with standard radiography, patient exposure during tomographic procedures is

A) lower
B) the same
C) higher
D) it depends on the anatomy being imaged

Question 46

Linear tomography is used to overcome the limitation that some anatomic areas are difficult to see because they are superimposed by other structures.

Question 47

The thickness, or width, of the focal plane is called a

A) level
B) section
C) portion
D) fulcrum

Question 48

In a system with an adjustable fulcrum

A) the patient does not move
B) the tube does not move during the exposure
C) the fulcrum layer is moved up or down to the level of interest
D) the patient does not move and the fulcrum layer is moved up or down to the level of interest

Question 49

To produce a thin tomographic section, there needs to be a

A) low fulcrum level
B) high fulcrum level
C) small tomographic angle
D) large tomographic angle

Question 50

The primary result of a DXA scan is a detailed radiographic image of the hip or lumbar spine

Question 51

Linear tomography has been replaced with the introduction of computed tomography.

Question 52

A dedicated chest room allows the radiographer to stay in the room while the images are being processed.

Question 53

A dedicated unit is one that is designed for specific imaging procedures

Question 54

The image of a mandible taken with a panorex unit and one taken with standard radiographic equipment have very similar appearances.

Question 55

In that the exposure time for a linear tomographic image is long, the mA must be

A) low
B) mid-range
C) high

Question 56

Increasing the tomographic angle _____ the thickness of the focal plane.

A) increases
B) decreases
C) does not affect

Question 57

The radiographer does not need to wear a lead apron while imaging patients using mobile equipment because the exposure is very minimal.