Imaging modalities Part 2

Question 1

The type of medical imaging that shows a continuous x-ray image on the monitor.

Answer 1

Fluoroscopy

Question 2

Study of moving body structures.

Answer 2

Fluoroscopy

Question 3

The primary function is to provide real-time dynamic viewing of anatomic structures.

Answer 3

Fluoroscope

Question 4

Dynamic studies are examinations that show the motion of circulation or the motion of internal structures.

Answer 4

Fluoroscopy

Question 5

Allows the physicians to view a continuous image of the internal structure while the x-ray tube is energized.

Answer 5

Fluoroscopy

Question 6

complex electronic device that receives the remnant X-Ray beam, converts it into light, and increases the light intensity.

Answer 6

Image intensifier

Question 7

Digital radiography was introduced in 1981 by Fuji with the first commercial computed radiography (CR).

Answer 7

Computed radiography

Question 8

form of digital radiography.

Answer 8

computed radiography

Question 9

A digital image acquisition process using a Conventional X-ray machines that produces images that have much better contrast than a Conventional X-ray film-screen system.

Answer 9

computed radiography

Question 10

A process of capturing radiographic data from a conventional X-ray machine and processing the data digitally to produce high quality radiographic images.

Answer 10

Computed radiography

Question 11

For exposure, an Imaging Plate (IP) is placed in a cassette instead of a piece of film. The IP captures and “stores” the X-rays.

Answer 11

Computed radiography

Question 12

Components of a CR system

Answer 12

• cassette with imaging plate
• ID tablet
• Preview and ID station
• Digitizer
• Processing server
• Laser camera

Question 13

an x-ray–sensitive plate that is encased in a protective cassette.

Answer 13

CR image receptor

Question 14

Both produce a latent image, in a different form, that must be made visible via processing.

Answer 14

CR image receptor

Question 15

The Imaging Plate looks like the intensifying screens found in Conventional film-screen cassettes

Answer 15

Imaging plate (IP)

Question 16

Coated with photostimulable phosphor, also called storage phosphor.

Answer 16

Imaging plate (IP)

Question 17

contains a protective coat, a conductive layer, support and laminate layers.

Answer 17

Imaging plate (IP)

Question 18

Instead of emitting light immediately when exposed to X-rays, the photostimulable phosphor has the special property of storing the X-ray energy in a latent form and releasing the same when stimulated by a laser energy in the CR Reader /Digitizer.

Answer 18

Imaging plate (IP)

Question 19

A digital image acquisition process using a digital X-ray machines with flat panel detectors.

Answer 19

Digital Radiography

Question 20

Uses two types of detectors:
– Direct
– Indirect

Answer 20

Digital Radiography

Question 21

Uses a two step process that first converts X-rays
into light, then converts that
light energy into electronic signals

Answer 21

Indirect detectors

Question 22

The flat panel detector consists of an amorphous selenium semiconductor X-ray absorber coating over a thin-film transistor array of amorphous silicon

Answer 22

Direct detectors

Question 23

In this system, X-ray photons are immediately converted into electronic signal

Answer 23

Direct detectors

Question 24

This immediate conversion eliminates the need for additional steps to capture and convert incident X-ray energy

Answer 24

Direct detectors

Question 25

Corrective image processing which can result in
increased image noise si reduced with the highly efficient X-ray energy conversion of direct DR

Answer 25

direct detectors

Question 26

automatically convert X- rays into electronic signals.

Answer 26

direct detectors

Question 27

X-rays interact with semiconductor material Amorphous selenium

Answer 27

Direct detectors

Question 28

X-rays converted directly into electrical charge
* No intermediate steps

Answer 28

Direct detectors