Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
RAD107 chapter 11&12
RAD 107 week 2
| Question | Answer |
|---|---|
| Which of the following is the principal source of noise on a radiographic image? | Scatter radiation |
| What are the principal characteristics of any medical image? | Contrast resolution, noise, artifacts, and spatial resolution |
| Which of the following are considered a source of image noise in computed radiography? | Inadequate sampling |
| Which sequence of events is correct concerning the production of a PSL signal? | Expose, stimulate, read, erase |
| What takes place during the stimulate step in the production of a PSL signal? | The latent image is stimulated from the interactions of an infrared laser beam with the PSP. |
| What takes place during the expose step in the production of a PSL signal? | An energy transfer results from the excitation of electrons into a metastable state. |
| What takes place during the read step in the production of a PSL signal? | The emitted light signal is detected and measured. |
| Which of the following material(s) is/are considered photostimulable? | Barium fluorohalide |
| What takes place during the erase step in the production of a PSL signal? | Residual metastable electrons are moved to the ground state by an intense light. |
| The emission of visible light after excitation by laser light is known as ________________. | photostimulation |
| In computer language, a byte is _________. | 8 bits |
| Word, Excel, iTunes, and Spider Solitaire are application programs. | True |
| The ________ programming language was developed for coding business data. | COBOL |
| The __________________ controls data transfer between the main memory and the input and output hardware | central processing unit |
| The ________ is an example of computer input software. | computer programs |
| The _____ represents zero or one. | bit |
| The ________, developed in 1951, was the first commercially successful general-purpose stored-program electronic digital computer. | UNIVAC |
| MAC-OS and Windows are two different __________ systems. | operating |
| The processor includes the circuitry for the actual computations and the memory that supports this function. | True |
| Modern day computers use ___________ to store information. | silicon chips |
| The principal source of noise in computed radiography is ____________________. | scatter radiation |
| The computed radiography image has _____________________. | wide exposure latitude and improved contrast resolution |
| Following the laser stimulation of the photostimulable phosphor, the excited electrons are _________________. | mostly stabilized |
| A photostimulable phosphor in a metastable state will emit light ________________. | immediately, when stimulated by light, and over time |
| _____________ is prevented by flooding the erased imaging plate with bright light. | Ghosting |
| The laser beam must be less than 100 µm in diameter in order to maintain ________. | high spatial resolution |
| Europium is the ______________ of the photostimulable phosphor. | activator |
| The four steps of creating an image with computed radiography are ______________. | metastable state, stimulate, read, and erase |
| Computed radiography imaging produces _____________ gray levels. | 10,000 |
| IPs should be used soon after the erase cycle has been completed. | True |
Created by:
travis686
Popular Radiology sets