Digital Radiography Worksheet

Computed radiography (CR) and direct radiography (DR) IRs differ in which of the following ways?

• CR uses a photostimulable phosphor plate, while DR uses a flat-panel detector.

• CR uses a flat-panel detector, while DR uses a photostimulable phosphor plate.

• Both CR and DR use only film-based imaging.

• CR and DR are identical in their image acquisition methods.

Identify the main difference between indirect and direct conversion type digital IRs.

• Direct conversion type digital IRs convert the input signal directly to a digital output, while indirect conversion type digital IRs use an intermediate analog signal.

• Indirect conversion type digital IRs convert the input signal directly to a digital output, while direct conversion type digital IRs use an intermediate analog signal.

• Both types use only analog signals for conversion.

• There is no difference between indirect and direct conversion type digital IRs.

Which of the following lists five digital radiographic modes in addition to computed radiography?

• Direct digital radiography, fluoroscopy, digital mammography, digital dental radiography, digital tomosynthesis

• Computed tomography, ultrasound, MRI, PET, SPECT

• Analog radiography, film-screen radiography, xeroradiography, angiography, nuclear medicine

• Digital subtraction angiography, echocardiography, thermography, scintigraphy, endoscopy

The difference between direct digital radiography and indirect digital radiography is:

• Direct digital radiography converts X-rays directly into electrical signals, while indirect digital radiography first converts X-rays into light, then into electrical signals.

• Direct digital radiography uses film, while indirect digital radiography uses sensors.

• Indirect digital radiography produces higher resolution images than direct digital radiography.

• Direct digital radiography requires chemical processing, while indirect digital radiography does not.

The capture, coupling, and collection stages are essential components of each type of digital radiographic imaging system.

• They determine how the image is acquired, transferred, and stored in digital radiography.

• They describe the process of patient preparation before imaging.

• They refer to the maintenance procedures for radiographic equipment.

• They are unrelated steps in the imaging workflow.

Silicon, selenium, cesium iodide, and gadolinium oxysulfide are used as what in digital radiography?

• Detector materials

• Contrast agents

• Image display screens

• X-ray tubes

What is shown in the images above?

• Magnetic Resonance Imaging (MRI)

• Direct Digital Radiography (DR or DDR)

• Computed Tomography (CT)

• Ultrasound Imaging

Which of the following is NOT required in this digital radiography setup?

• Cassettes

• Imaging plate (IP)

• Reader

• All of the above

This digital radiography system requires the use of cassettes.

• True

• False

Fill in the blank: This digital radiography system uses a ________ that is hard-wired directly to the computer.

• flat-panel detector

• image plate

• cassette

• film screen