Image Acquisition Word Scramble
|
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
| Question | Answer |
| Distortion can be caused by what? Q239 pg229 | Tube angle, the position of the organ or structure in the body, the radiographic positioning of the part |
| How often are radiographic equipment collimators required to be evaluated? Q222, pg 226 | Semiannually |
| IRs frequently have a rear lead-foil layer that functions to do what? Q219, pg 226 | Absorb backscatter |
| The continued emission of light by a phosphor after the activating source has ceased is termed? Q220, pg 226 | Phosphorescence |
| What is a compensating filter used for? Q203, pg 224 | To even out widely differing tissue densities |
| Boxes of film stored in too warm an area may be subject to what kind of artifact? Q204, pg 224 | Fog |
| The line-focus principle expresses the relationship between what 2 things? Q215, pg 225 | The actual focal spot and the effective focal spot |
| What happens to contrast as the grid ratio is decreased? | The scale of contrast gets longer |
| What are the unsharp edges of tiny radiographic details called? | Blur |
| To make a perceptible increase in radiographicdensity, what must be increased and by how much? | mAs must be increased by 30% |
| If an anatomic structure appears smaller on the IR than its actual size, it is? | Foreshortened |
| How will a decrease in kV affect a radiograph? | A decrease in contrast |
| The relationship between the height of a grid's lead strips and the distance between them is referred to as? | Grid Ratio |
| Due to the anode heel effect, the intensity of the x-ray beam is greatest at which end of the beam? | Cathode side |
| The processing algorithm represents what? | Image grayscale |
| In digital imaging, as DEL size decreases, spatial resolution does what? | Increases |
| The x-ray image seen on the computer display monitor is a what? | Analog Image |
| What accessory is used to measure the thickness of body parts in order to determine optimal selection of exposure factors is? | A Caliper |
| Windowing of a digital image determines what? | Contrast |
| The purpose of the electroconductive layer of a CR PSP plate is to? | Facilitate transportation through the scanner/reader |
| The intensity of ionizing radiation decreases as the distance from the source? | Increases |
| If a lateral projection of the chest is being performed on an asthenic patient and the outer photocells are selected, what is likely to be the outcome? | Decreased Density |
| Which device is used to compensate for variations in patient anatomy? | Compensating Filter |
| Would you increase or decrease technique for Osteoporosis? | Decrease |
| The reduction in x-ray photon intensity as the photon passes through material is known as what? | Attenuation |
| Would you increase or decrease technique for Emphysema? | Decrease |
| The absorption of useful radiation by a grid is called? | Grid Cutoff |
| During CR imaging, the latent image present on the PSP is changed to a computerized image by the? | ADC |
| Focal spot blur is greatest towards which end of the x-ray tube? | Cathode End |
| The direction of electron travel in the x-ray tube is? | Cathode to Anode |
Created by:
agerling
Popular Radiology sets