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Exposure Tech 177

Part 2

QuestionAnswer
AEC detector/sensor size is Fixed and cannot be adjusted
The patient’s _________ needs to adequately cover the detector combination Anatomic Area of Interest
Use a ________ if the detector combination is larger than the area of interest Manual Technique
AEC will stop exposure prematurely if _________ is hitting the IR Primary Radiation
The AEC system compensates for changes in________ Patient Thickness
If the area of interest is thicker, _________ to reach the preset the exposure to the detectors The Exposure Time will Lengthen
The additional scatter radiation produced by too open collimation may cause the detector to _________ Terminate the Exposure Prematurely
If the x-ray field size is collimated too closely, the detector does not receive sufficient exposure initially and may________ Prolong the Exposure Time
Different types of image receptors ________ easily Cannot be Interchanged
When ________ is performed, it is done for a particular type of image receptor Calibration
A radiographic system with buttons for specific anatomic areas that can be selected which displays a suggested technique Anatomically Programmed Techniques (APT)
The purpose of calibration is to ensure that ________ to the image receptor are produced Consistent and Appropriate Exposures
Pre-established guidelines used to select______ for each type of radiographic examination Standardized Manual or AEC Exposure Factors
______ Devices that measure part thickness Calipers
How many types of primary exposure technique charts exist? Two
Variable kVp has a _____ Fixed mAs
Fixed kVp has a _____ Variable mAs
Variable kVp means that ______ kVp can be Increased as the Anatomic Part Thickness Increases
Determination of the _______ has not been standardized when using Variable kVp – Fixed mAs Baseline kVp for each Anatomic Area
If kVp varies,_______ may vary as well Radiographic Contrast
Using ________ is best for Small Changes (Smaller Extremities) Variable kVp/ Fixed mAs
Fixed kVp means that ______ Maintains an optimal kVp required for the specific body part and adjusting the mAs for variations in part thickness
Accurate measurement of the anatomic part is important but is _________ compared with the precision needed with variable kVp charts Less Critical
______ Is Easier to use Fixed kVp/ Variable mAs
_______ for Geriatric Patients Exposure Times may need to be Decreased
Fiberglass: No change in exposure factors required
Plaster: Requires an increase in exposure factors
_______ Require no change in exposure factors Inflatable and Fiberglass Splints
________ May require increased exposure factors if the splint is in the path of the primary beam Wood, Aluminum, and Solid Plastic Splints
_______ Diseases or conditions that increase the absorption characteristics of the part, making the part more difficult to penetrate Additive
______ Diseases or conditions that decrease the absorption characteristics of the part, making the part less difficult to penetrate Destructive
_______ Produce more brightness Positive Contrast Agents
_______ Produce less brightness Negative Contrast Agents
_______ Refers to the shortest exposure time that the system can produce Minimum Response Time
______- Fail-safe when AEC is not working properly Backup Time
_________ Indicates that a problem exists, possibly a problem with the AEC device Routinely using plus or minus exposure adjustment settings to produce an acceptable radiographic image
kVp that is high enough to ensure penetration of the part but not too high to diminish radiographic contrast Optimal kVp
When compared with an anteroposterior (AP) projection, an ________should determine any changes in exposure factors for oblique and lateral patient positions Increase or Decrease in the amount of tissue
Created by: user-2016295
 

 



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