Digital Film Receptors

Question 0

Used for computed radiography

Answer 0

Imaging plate

Question 1

Allows implementation of a fully PACS

Answer 1

Digital detectors

Question 2

Imaging plate is made from

Answer 2

Photostimulable phosphor plate

Question 3

Phosphor layer

Answer 3

Barium fluorochloride

Question 4

Protects the phosphor layer and allows light feom the laser and emitted light to pass through it

Answer 4

Protective layer

Question 5

A layer of PSP that traps the electrons during exposure

Answer 5

Phosphor layer

Question 6

Stimulates light

Answer 6

Photostimulable

Question 7

Most commonly used phosphor

Answer 7

Barium Fluorobromide

Question 8

Sends light in a forward direction

Answer 8

Reflective layer

Question 9

Absorbs and reduces static electricity, not found in IS, absorbs excess electricity

Answer 9

Conductive layer

Question 10

Gives imaging sheet some strength

Answer 10

Support layer

Question 11

Absorbs stimulating light (laser light) but reflects emitted light

Answer 11

Light Shielding Layer

Question 12

Protects the back of the plate

Answer 12

Backing layer

Question 13

Identification of the patient

Answer 13

Barcode

Question 14

Serve to orient the cassette to the top of the patient and patient’s right side

Answer 14

Stickers

Question 15

2 types of IP

Answer 15

Standard Resolution

High Resolution

Question 16

Resolution that have thick phosphor layer

Answer 16

Standard Resolution IP

Question 17

Resolution that have thinner phosphor layer, commonly used for extremity examination

Answer 17

High Resolution IP

Question 18

CR cassette are usually made of

Answer 18

Aluminum / Aluminum honeycomb panel

Question 19

Allow radiation to pass through

Answer 19

Radiolucent (front of cassette)

Question 20

The back of the cassete is made up of _____ to prevent backscatter radiation

Answer 20

Lead

Question 21

The light produced is ______ to the xray exposure

Answer 21

Proportional

Question 22

Used as a receptor for digital radiography (indirect conversion)

Answer 22

Charged Coupled Devices

Question 23

CCD are physically small about

Answer 23

2-3 cm^2

Question 24

Detects xrays and converts them into light

Answer 24

Xray scintillator

Question 25

Materials used for xray scintillator

Answer 25

PSP | CsI scintillator

Question 26

Reduces the size of the projected visible light image

Answer 26

Fiber optics tapers - lens

Question 27

Converts light into an electric charge

Answer 27

CCDs

Question 28

The number of light photons that reach the CCDs are less / light that are lost

Answer 28

Secondary Quantum Sink

Question 29

Converts xray to light and then converts the light to electrical charges

Answer 29

Indirect conversion flat panel detector

Question 30

It emits light proportional to the amount of energy absorb

Answer 30

Xray scintillator

Question 31

Xray scintillator are made up of

Answer 31

CsI | Gd2O2S

Question 32

Converts light to an electrical signal

Answer 32

Amorphous Silicon Photodiode

Question 33

Signal in a form of a charge is read out by ______. Sends image to the computer

Answer 33

Thin Film Transistor

Question 34

This crystal xan be shaped into 5-10 um wide needles arranged perpendicularly

Answer 34

Cesium Iodide

Question 35

This reduces diffusion of light within the scintillator layer/ high quality

Answer 35

Cesium iodide

Question 36

Resistant to mechanical stress and used for portable flat-panel detectors

Answer 36

Gadolinium Oxysulfide

Question 37

Directly converts xray to electrical charges

Answer 37

Direct conversion detectors

Question 38

Converts xray photons into electrical charges

Answer 38

Xray photoconductor

Question 39

Most commonly used photoconductor

Answer 39

Amorphous selenium

Question 40

Rotating selenium-dotted drum which has a positive electrical surface charge is exposed to xrays / limited to thorax stand

Answer 40

Selenium drum

Question 41

Provides good resolution and can be used for both thorax stand and bucky tables

Answer 41

Flat-panel detector

Question 42

The capacity of the detector to transfer the modulation of the input signal

Answer 42

Modulation Transfer Function