A patient with degenerative arthritis would require a _____________ in exposure technique.
What is decrease?
100
The kVp that is sufficient to penetrate the body part adequately without excess exposure to the patient is called:
What is optimum kVp?
100
Radiation exposure to patients maybe somewhat lower with fixed kVp technique charts. T or F
What is TRUE?
200
What is the name of the device we use to measure patients:
What are calipers?
200
Definition of inverse square law:
What is radiation intensity is inversely proportional to the square of the distance?
200
If you were to increase 80 kVp by using the 15% rule,what would the new kVp be:
What is 92 kVp?
200
Using the small focal spot provides:
What is better image sharpness?
200
The major limitation in obtaining images of obese patients is:
What is inadequate penetration of the body part.
300
Name two types of kVp technique charts:
What are variable kVp and fixed kVp?
300
Below_______ an adjustment of 2kVp/cm will compensate for small changes in part size.
What is 85 kVp?
BONUS:Above 85 kVp a change of _______is necessary.
300
Osteoporosis, emphysema and multiple sarcoma would require a decrease in exposure technique: T or F
What is FALSE?
300
Which mA station can be used for most average size patients to take advantage of the small focal spot:
What is 200?
300
Name of specially designed attenuating devices used for large variations in issue density:
What are compensating filters?
400
Technique charts are based on patient body part. These measurements are expressed in:
What is centimeters?
400
BONUS : To use the 15% rule to increase contrast,____________ the kVp by_______and _____________ the mAS by _____.
What is decrease, 15%, multiply, 2 ?
400
Name two pathologic conditions that would require an increase in exposure factors: one begins with C, the other a P
What is cardiomegaly, pneumonia?
400
Determine the mAs when 400mA is used with a 50 millisecond exposure time:
What is 20 mAs?
400
Before using your technique chart to make images of patients, it is helpful to test some of the exposures using a:
What is radiographic phantom?
500
Type of technique chart that has a specific mAs value for each projection and utilizes small changes in kVp to make up for the difference in patient or size of body part:
What is Variable kVp technique chart?
500
To compensate for a 2cm increase in part size using mAs, increase the original mAs by:
What is 30%?
500
If the kVp level was set to low the image would have too much contrast. T or F
What is TRUE?
500
BONUS: If you were anticipating a good likelihood of motion on an image what adjustments would you make:
What is increase mA and decrease exposure time?
500
Technique charts are standard for all x-ray machines and facilities.