chapter 10

Question 1

patient motion

Answer 1

rad tech needs to eliminate motion as much as possible
-3 muscle tissues that affect motion
1) smooth ( involuntary)
2) cardiac (involuntary)
3) striated (voluntary)

Question 2

involuntary muscles

Answer 2

controlled by Autonomic NS
only way to control these is SHORT EXPOSURE TIME
-involuntary motions caused by:
-heart pulsation
-chills
-peristalsis
-tremors
-spasms
-intense pain

Question 3

voluntary muscle movement

Answer 3

skeletal muscles (striated) and controlled by Central NS
BEST controlled by COMMUNICATION and immobilization

-results from lack of control caused by:
-nervousness
-discomfort
-mental illness
-fear
-age
-breathing
-excitability

Question 4

pre-exposure instructions
Respiration phase

Answer 4

breathing instructions
-called respiration phase
-suspend on inspiration (inhale &hold)
-suspend on expiration (exhale & hold)
-suspend (hold breath)

Question 5

inspiration

Answer 5

-depresses diaphragm and abdomen
-lengthen lungs
-elevate sternum anteriorly
-elevate ribs

used mainly for image of thorax

Question 6

expiration

Answer 6

-elevated diaphragm
-shortens the lungs
-depresses the sternum
-lowers the ribs

used for imaging of abdomen

Question 7

breathing technique

Answer 7

slow, shallow breathing
-used to blur lung markings
-type of motion used to our benefit
-have to use longer exposure time :/

Question 8

making the exposure

Answer 8

-properly position patient
-give clear instructions
-walk back behind barrier to make exposure
-keep eyes on pt at all times