chapter 21
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| show | the measurement of the characteristic responses of film to exposure and processing
🗑
|
||||
| What is accomplished by exposing and processing film and then measuring and evaluating the resulting densities | show 🗑
|
||||
| *What method is useful in establishing, evaluating, and maintaining technical exposure factor charts and systems | show 🗑
|
||||
| *Who can only perform the duties of the sensitometric methods | show 🗑
|
||||
| show | equipment for sensitometric procedures
🗑
|
||||
| show | penetrometer
🗑
|
||||
| What is another name for a penetrometer | show 🗑
|
||||
| show | by exposure to x-ray
🗑
|
||||
| show | it reproduces the variables associated witha clinical situation
🗑
|
||||
| show | sensitometer
🗑
|
||||
| The sensitometer contains________ (a pulse stroboscopiclight is best) and a piece of film with astandardized _________(a step tablet) | show 🗑
|
||||
| *What reproduces the same amount of light each time it is triggered | show 🗑
|
||||
| *What are controlled by circuits that supply an exact quanity of to a capacitor that discharges to astroboscopic light when triggered | show 🗑
|
||||
| show | optical step wedge
🗑
|
||||
| The optical step wedge leaves a uniform and reproducible _________ to expose any film placed in the _________ over the optcal ste wedge | show 🗑
|
||||
| show | optical step wedge
🗑
|
||||
| show | 11 step wedge
🗑
|
||||
| What increases density up to 41 percent by a faactor of 1.41 times | show 🗑
|
||||
| *What wedge is perfect for processor quality control monitoring | show 🗑
|
||||
| show | *exhausted reducing agents and bromide ions
🗑
|
||||
| *how is the sensitometric strips fed into the automatic processor | show 🗑
|
||||
| show | densitometer
🗑
|
||||
| show | calibrated uniform light source, stage, light aperture, sensor arm, readout display, and calibration control
🗑
|
||||
| *What must be calibrated before each reading by recording the amount of light the light source is emitting | show 🗑
|
||||
| *The calibrating of the densitometer is done by pushing the __________ so that the sensor is in contact with the light source | show 🗑
|
||||
| show | *calibration control
🗑
|
||||
| *What can calculate the difference between the calibration intensity and the intensity of light the film is transmitting | show 🗑
|
||||
| show | *filter
🗑
|
||||
| *because films are sensitive to a wide range of exposures, their _______ are best visualized if the range is compressed into a logarithmic scale | show 🗑
|
||||
| show | 10, doubling
🗑
|
||||
| show | optical density numbers
🗑
|
||||
| What is the density range for radiographic film | show 🗑
|
||||
| *What is the ability of a film to stop light | show 🗑
|
||||
| What is normally shown as a graphic relationship between the amount of exposure and the resultant density on the film | show 🗑
|
||||
| show | horizontal exposure axis (x axis)
🗑
|
||||
| show | vertical density axis (y axis)
🗑
|
||||
| The curves of the axis is known as | show 🗑
|
||||
| show | D log or E curves
🗑
|
||||
| show | the base plus fog, toe, straight line gamma , shoulder, and maximum density Dmax
🗑
|
||||
| What represents the density at no exposure or the density that are inherent | show 🗑
|
||||
| show | base + fog
🗑
|
||||
| show | OD 0.05-0.10
🗑
|
||||
| True or False: the total base fog is seldom below OD 0.10 but should not exceed OD 0.22 | show 🗑
|
||||
| show | processing the film, fog density
🗑
|
||||
| What is the measurement of the diagnostic quality of the information on a radiograph | show 🗑
|
||||
| Why is the straight line portion of the curve fairly straight | show 🗑
|
||||
| What is primarily caused by the high temperature at which automatic processors operate | show 🗑
|
||||
| show | phenidone
🗑
|
||||
| show | toe
🗑
|
||||
| What is the portion of the curve that is between the toe and the shoulder | show 🗑
|
||||
| What is the range of the diagnostic densities | show 🗑
|
||||
| What is the reducing agent that controls the heavy black tone later in the developer | show 🗑
|
||||
| show | shoulder
🗑
|
||||
| show | Dmax
🗑
|
||||
| show | highest
🗑
|
||||
| show | *the highest point on the D log or E curve
🗑
|
||||
| *What is the result of the exposure beyond Dmax | show 🗑
|
||||
| *why would there be less density beyond Dmax | show 🗑
|
||||
| show | *reversal or solarization
🗑
|
||||
| *what is the shape of the true D log E curve | show 🗑
|
||||
| show | duplication film
🗑
|
||||
| What will cause a reversed duplicated image instead of a negative one | show 🗑
|
||||
| *What will cause a reversed duplicated image instead of a negative one | show 🗑
|
||||
| What will cause a reversed duplicated image instead of a negative one | show 🗑
|
||||
| What are the classification of the primary characteristic of film | show 🗑
|
||||
| What permit the analysis of speed, contrast, and latitude within the normal exposure ranges of the film | show 🗑
|
||||
| *What can causr reciprocity failure | show 🗑
|
||||
| *What can happen to silver halide crystals, when they are exposed to extremely long or high intensity levels | show 🗑
|
||||
| What is the ability to accurately image an object | show 🗑
|
||||
| What is another name for detail, sharpness, definition, and resolving power | show 🗑
|
||||
| show | by the ability to see pairs of lines
🗑
|
||||
| show | lp/mm ( line pairs per millimeter)
🗑
|
||||
| show | by the size of the silver halide crystals
🗑
|
||||
| show | *small area
🗑
|
||||
| show | information
🗑
|
||||
| What kind of relationship exist between film resolution and crystal size | show 🗑
|
||||
| The smaller the crystal the _________ the resoluti on | show 🗑
|
||||
| show | larger
🗑
|
||||
| show | *silver halide crystals
🗑
|
||||
| What does poor resolution called | show 🗑
|
||||
| show | intensifying screen phosphers
🗑
|
||||
| *True or False: The radiographic film/screen system resolution is controled by the size of the silver halide crystals | show 🗑
|
||||
| What is the amount of density a film produces for a given amount of exposure | show 🗑
|
||||
| show | speed
🗑
|
||||
| show | size of the silver halide crystals
🗑
|
||||
| What else have an effect on the film sensitivity | show 🗑
|
||||
| show | true
🗑
|
||||
| show | larger, faster
🗑
|
||||
| show | true
🗑
|
||||
| show | true
🗑
|
||||
| show | same number of photons
🗑
|
||||
| True or False: the film speed and thickness of emulsion are directly related | show 🗑
|
||||
| The _______ the emulsion the _________ the film speed | show 🗑
|
||||
| show | slower
🗑
|
||||
| show | speed point
🗑
|
||||
| show | exposure point
🗑
|
||||
| What can determined by using the reciprocal of the exposure required to produce a given density | show 🗑
|
||||
| What does ______1______ exposure in R needed to produce speed point density (OD 1.0+b+f) | show 🗑
|
||||
| show | film speed
🗑
|
||||
| What will cause a visible change in film density | show 🗑
|
||||
| What is the difference between adjacent densities | show 🗑
|
||||
| show | shoulder
🗑
|
||||
| show | true
🗑
|
||||
| What is controlled by the level of activity of the hydroquinone | show 🗑
|
||||
| What is simply a measure of the solpe of the straight line portion of the curve at the speed point (OD 1.0) | show 🗑
|
||||
| show | average gradient
🗑
|
||||
| show | average gradient
🗑
|
||||
| What are the most radiographic film average gradient | show 🗑
|
||||
| show | common misnomer
🗑
|
||||
| What is the range of exposures that will produce densities within the diagnostic range | show 🗑
|
||||
| Latitude can be recorded as the _____ of the range of exposures that will produce diagnostic range densities | show 🗑
|
||||
| show | true
🗑
|
||||
| show | increase, decrease
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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
Created by:
rachel43