RAD 147 Digital Imaging Lesson

RAD 147 Digital Imaging Lesson

By Bethany Stearns

Multiple Choice

The beam of x-ray photons that exits the tube before interacting with the patient/object is called the:

• remnant beam

• primary beam

• exit radiation

• differential absorption

Multiple Select

Which of the following statements are true?

• As pixel size decreases, spatial resolution increases

• As pixel size increases, spatial resolution increases

• As matrix size increases, spatial resolution increases

• As matrix size decreases, spatial resolution increases

Multiple Choice

Bit depth is one of the factors which determines the ________ ________ of the digital imaging system.

• spatial resolution

• geometric distortion

• recorded detail

• contrast resolution

Multiple Choice

Digital imaging systems have a ______ dynamic range.

• wide and linear

• wide and nonlinear

• narrow and linear

• narrow and nonlinear

Multiple Choice

A ____ SNR will produce the highest quality image.

• High

• Low

Multiple Choice

PSP plates are read using:

• helium neon laser

• fluorescent light

• electron beams

• active matrix array

Multiple Choice

Each FPD has a(n):

• active matrix array

• photostimulable phosphor plate

• transecting matrix dialogue

• film emulsion with intensifying screen

Multiple Select

The two types of digital imaging systems are:

• PSP

• FPD

• DEL

• AMA

Multiple Choice

A histogram is

• a graphical representation of the amount of radiation that stuck the IR

• the combination of window width and window level settings that determine the appearance of the image

• a measurement metric that determines if the optimal receptor exposure was reached for a given examination

• the physical location of the x-ray photons striking the IR as they relate to the matrix

Multiple Choice

Low-pass filtering is also referred to as

• Sharpening

• Inversion

• Smoothing

• Equalization

Poll

Do you feel that you have a solid grasp on the content in this lesson?

• Yes, absolutely!

• I'm okay.

• Somewhat confused.

• I'm considering changing my major. *cries softly*