Imaging Final quiz 4

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100

The x-ray tube has a positive and negative side to its operation. Because of this, the x-ray tube is considered to electrically be a

A. microprocessor.

B. invertoR

C. tetrode.

D. diode.

D. Diode

100

The atypical (not common) tube mounting design

a. Ceiling mounted

b. Table mounted

C. All of these are common designs

d. Floor mounted

b. Table mounted

100

With modern radiographic systems, images are now comprised of electronic data sets in a digital format. The data files can be altered and optimized in appearance following exposure and image display. This step is often referred to as

A. exposure indexing.

B. automatic reshuffling

C. passive processing.

D. postprocessing.

D. Post processing

100

Portable digital DR detectors are very popular for portable radiographic imaging. It is important to remember that

A. a communication connection must exist between the detector and X-ray generator.

B. they must have a small electrical charge applied to the TFT layer.

C. wireless detectors use batteries for charging.

D. All of these

100

In radiation therapy, palliative treatment plans are intended to

A. calculate actual treatment plans with the use of a simulator.

B. merge diagnostic studies in a “fusion” type of treatment therapy.

C. eliminate all cancers in the patient’s body.

D. control cancer tissue growth to lengthen and improve the patient’s life.

D. Control cancer tissue growth To lengthen and improve the patients life.

200

This modality will likely have the highest diagnostic yield for determining pregnancy stages.

A. Routine radiography

B. CT scans

C. All of these have the same diagnostic yield

D. Ultrasound

200

The X-ray IR system that does not require a reader to produce the image:

A. Ultrasound

B. DR

C. CR

D.All of these require a reader to produce an X-ray image.

B. DR

200

To improve the flexibility of a radiographic system, engineers have designed equipment so that the X-ray tube support system and detector assembly

A. have an off center point of rotation.

B. can move independently of each other.

C.are always connected to the radiologist suite

D.are isotropic.

B. Can move independently of each other

200

Part B:

A. Gantry

B. Collimator

C. Generator

D. X-ray Tube

B. Collimator

200

Fluoroscopy of a fractured hip repair done in the surgical theater is typically accomplished with a

A. portable C-arm system.

B.mobile MRI unit.

C. mini-CT Scanner

D.portable nuclear medicine unit.

A. Portable C-arm system

300

The option that is favorable for modern X-ray machine tables:

A. None of these are favorable design features.

B. Must be radiopaque to protect the patient from radiation.

C. Sufficiently flat

D. Must have a head rest for technologist's comfort

C. Sufficiently flat

300

Chest radiographs and upright abdominal studies are conveniently performed using a(n)

A. tilting radiographic table.

B.upright cassette holder or Bucky.

C. interventional C-arm system with a fixed SID.

D.variable height table.

B. Upright cassette holder or Bucky

300

The person on this list who is not permitted to operate this machine:

A. Radiologist

B. Radiologic Technologist

C.Radiologic Technologist Student

D. Secretary

300

Another term for automatic collimation is

A. electronic masking.

B. electronic shuttering.

C. positive beam limitation

D. coning.

C. Positive beam limitation

300

AEC controls this aspect of the radiographic technique selection:

A. The grid vibration frequency

B. Time measured in seconds

C. Time measured in amperes

D. The voltage

B. Time measured in seconds

400

The choice that is true about radiographic x-ray room tables:

A.Must be of the fixed design.

B. Should be radiolucent

C. Should be radiopaque to protect the patient from exposure

D. Should not be flat

B. Should be radiolucent

400

The receptor tray is:

1. A

2. B

3. C

4. D

400

Select the correct option that pertains to mobile radiography

A.Is never necessary in medical imaging departments.

B. Is convenient since it does not require the use of an IR

C. Is performed for situations where the patient is unable to be brought to the department.

D. Is only performed if the patient is too tired to to come to the department

C. Is performed for situations where the patient is unable to be brought to the department

400

In a radiographic/fluoroscopic (R/F) system, the primary barrier is considered to be the

A. fluoroscopy lead apron in front of the spot film device.

B. tabletop of the fluoroscopic table.

C. the IR or flat-panel detector.

D. lead apron worn by the fluoroscopist

C. The IR or flat-panel detector

400

Images acquired in a CT scan are most commonly obtained in the patient’s ____________ plane.

A. axial

B. sagittal

C. mid-sagittal

D. coronal

A. Axial

500

The purpose of grid:

A.Absorb scatter that has been produced in the patient during exposures.

B. Reduce the production of scatter within the patient during exposure

C.Eliminate the need for lead shielding.

D.Reduce radiation exposures by ALARA

A. Absorb scatter that has been produced in the during exposures

500

Physicians can choose from several medical imaging modalities to determine their patient’s condition. Among these are radiography, MRI, CT, ultrasonography, and nuclear medicine, to mention a few. Each specialty has its own _______ of information.

A. prognostic efficacy

B.diagnostic yield

C.image fidelity

D.interpretation cycle

A diagnostic yield

500

Radionuclide imaging (nuclear medicine) is very unique in that its primary clinical value is the ability to

A. determine the difference between radiopauqe and radio lucent structures

B.measure bone mineral density and quantify a FRAX value

C.assess tissue perfusion and metabolic activities.

D.create high spatial resolution images of bony anatomy that rival CT scans.

C. Assess tissue perfusion and metabolic activities

500

A key distinctive characteristic of MR scanning is that the source of the MR signal to create the image is the

A. gantry coil.

B. patient.

C. gradient coil.

D.external coil.

B. patient

500

Desirable features of a modern radiographic table consist of which of the following?
1. High-attenuation tabletop material
2. Variable height
3. Four-way floating tabletop
4. Radiolucent tabletop
5. Convenient and ergonomic-friendly controls
6. Automatic filtering of high energy photons

A. 2, 3, 4, and 6 only

B. 2, 3, 4, and 5 only

C. 1, 2, 4, 5, and 6 only

D. 1, 2, 3, 5, and 6 only

B. 2, 3, 4,and 5 only