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RADT 465
Image Acquisition and Evaluation
| Question | Answer |
|---|---|
| Defined as the amount of blackness or opacity of an area in a radiograph due to accumulation of black metallic silver after exposure and processing ((D-7 Radiologic Technology Review (Kettering)) | Radiographic Density |
| Defined as the difference in densities on adjacent areas of the radiographic image((D-7 Radiologic Technology Review (Kettering)) | Radiographic Contrast |
| A radiograph with high contast is one that is ((D-7 Radiologic Technology Review (Kettering)) | Black and white, few shades of gray, short scale |
| A radiograph with low contrast is one that contains ((D-7 Radiologic Technology Review (Kettering)) | Many shades of gray, long scale |
| As film screen speed increases, contrast will ((D-16 Radiologic Technology Review (Kettering)) | Increase |
| As OID increases, Recorded detail ((D-20 Radiologic Technology Review (Kettering)) | Decreases |
| As SID increases, recorded detail ________ ((D-22 Radiologic Technology Review (Kettering)) | Increases |
| The faster the screen speed, the ______ patient dose ((D-23 Radiologic Technology Review (Kettering)) | Less |
| When exposing someone with a wet plaster cast, what do you do to your kVp? ((D-27 Radiologic Technology Review (Kettering)) | Increase kVp by 8-10 |
| When exposing someone with a dry plaster cast, what do you do to your kVp? ((D-27 Radiologic Technology Review (Kettering)) | Increase kVp by 5-7 |
| When exposing someone with fiberglass cast, what do you do to your kVp? ((D-27 Radiologic Technology Review (Kettering)) | Increase kVp by 3-4 |
| Higher kVp techniques will result in a reduction of ((D-28 Radiologic Technology Review (Kettering)) | Radiographic contrast |
| Higher mAs techniques will result in a ((D-28 Radiologic Technology Review (Kettering)) | Longer exposure time and the possibility of motion |
| The ability of the system to record adjacent small structures ((D-29 Radiologic Technology Review (Kettering)) | Spatial Resolution |
| The number of pixels sampled per millimeter as the laser scans each line of the imaging plate ((D-29 Radiologic Technology Review (Kettering)) | Sampling frequency |
| Ability to alter the density and contrast of a digital image following processing ((D-38 Radiologic Technology Review (Kettering)) | Windowing |
| Determines the gray-scale presentation of the tissue under examination ((D-39 Radiologic Technology Review (Kettering)) | Window width |
| Determines the type of tissue to be imaged ((D-39 Radiologic Technology Review (Kettering)) | Window level |
| Ability to store and retrieve digital images by using optical and/or magnetic memory device ((D-41 Radiologic Technology Review (Kettering)) | Archiving |
| Process of remote transmission and viewing of images ((D-41 Radiologic Technology Review (Kettering)) | Teleradiology |
| A minimum mAs change of ______% is necessary to yield a noticeable density change within the radiographic image ((D-44 Radiologic Technology Review (Kettering)) | 30% |
| Increases the effective energy level of the x-ray beam by hardening the beam removing low energy, non-diagnositc photons from the beam ((D-46 Radiologic Technology Review (Kettering)) | Filtration |
| As mAs increases, radiographic density ____________ proportionally ((D-7 Radiologic Technology Review (Kettering)) | Increases |
| This formula is used when being asked to maintain a constant density when there is a change in distance ((D-9 Radiologic Technology Review (Kettering)) | Direct Square Law Formula |
| This formula is used to calculate the change in beam intensity that will result when there is a change in distance ((D-8 Radiologic Technology Review (Kettering)) | Inverse Square Law Formula |
| Ability of the film to record a long range of density levels on the radiograph ((D-15 Radiologic Technology Review (Kettering)) | Film Latitude |
| The range of exposure factors that will produce a radiograph of diagnostic quality ((D-15 Radiologic Technology Review (Kettering)) | Exposure Latitude |
| Filtration changes the qualities of the beam, making the beam more ((D-18 Radiologic Technology Review (Kettering)) | Homogeneous |
| Additive diseases will increase subject contrast, resulting in an _______ in radiographic contrast((D-18 Radiologic Technology Review (Kettering)) | Increase |
| Destructive diseases will decrease subject contrast, resulting in a _______ in radiographic contrast ((D-18 Radiologic Technology Review (Kettering)) | Decrease |
Created by:
cameron101691