Diagnostic imaging test UPDATED Exam
Questions and CORRECT Answers
How does an x-ray work? - CORRECT ANSWER - X-rays pass through soft tissue but are
absorbed by bones are denser objects
A capture device converts X-rays into visible light to form an image
Denser objects appear whiter
X-ray uses - CORRECT ANSWER - Examine and diagnose internal structures such as
bone, heart, lungs and abdominal organs
X ray safety risks - CORRECT ANSWER - Small dose of radiation
May have tissue affects such as hair loss and skin reddening at high doses
Technicians must monitor exposure and wear protective gear
What parts of the body cannot be seen with an X-ray - CORRECT ANSWER - Heart,
spinal cord, or brain. Has trouble seeing digestive system defentions.
What type of fracture cannot be seen on an X-ray? - CORRECT ANSWER - Greenstick
How does Ultrasound work? - CORRECT ANSWER - Uses Sound waves to produce an
image of organs
Sound waves are reflected off internal organs and these produce an image
Ultrasound main uses - CORRECT ANSWER - To view Thorax, Abdomen, eyes, brain
and tendons.
Provides guidance for biopsies
ultrasound risks - CORRECT ANSWER - none, painless and no anesthesia
, How does an Electrocardiogram work - CORRECT ANSWER - -composite of all action
potentials at given time; not a tracing of a single Action potential
-electrodes are placed at various points on body to measure voltage differences
-Measures electrical impulses from heart
How long does an ECG take - CORRECT ANSWER - 30 sec to 2 min
What point of attachment is the neutral electrode in the ECG - CORRECT ANSWER -
Right leg
How many chest and how many limb electrodes - CORRECT ANSWER - 6 chest and 4
limb
Uses of ECG - CORRECT ANSWER - measure arrhythmias (heart beating too fast or
slow or not normal rate)
Can be screening test for heart disease
Why does an ultrasound of uterus need a full bladder? - CORRECT ANSWER - Helps the
sound waves travel through as sound travels faster in denser mediums. Without it the sound
waves would bounce around in the "hollow" bladder. Uterus is behind bladder
What conditions would require an eye ultrasound - CORRECT ANSWER - Retinal
detachment, eye tumours, or eye inflammation
What are some normal parts of a QRS complex - CORRECT ANSWER - P wave (arterial
contraction/ depolarization)
T wave (vertical repolarization)
R wave (spike)
Q wave (slight dip)
Questions and CORRECT Answers
How does an x-ray work? - CORRECT ANSWER - X-rays pass through soft tissue but are
absorbed by bones are denser objects
A capture device converts X-rays into visible light to form an image
Denser objects appear whiter
X-ray uses - CORRECT ANSWER - Examine and diagnose internal structures such as
bone, heart, lungs and abdominal organs
X ray safety risks - CORRECT ANSWER - Small dose of radiation
May have tissue affects such as hair loss and skin reddening at high doses
Technicians must monitor exposure and wear protective gear
What parts of the body cannot be seen with an X-ray - CORRECT ANSWER - Heart,
spinal cord, or brain. Has trouble seeing digestive system defentions.
What type of fracture cannot be seen on an X-ray? - CORRECT ANSWER - Greenstick
How does Ultrasound work? - CORRECT ANSWER - Uses Sound waves to produce an
image of organs
Sound waves are reflected off internal organs and these produce an image
Ultrasound main uses - CORRECT ANSWER - To view Thorax, Abdomen, eyes, brain
and tendons.
Provides guidance for biopsies
ultrasound risks - CORRECT ANSWER - none, painless and no anesthesia
, How does an Electrocardiogram work - CORRECT ANSWER - -composite of all action
potentials at given time; not a tracing of a single Action potential
-electrodes are placed at various points on body to measure voltage differences
-Measures electrical impulses from heart
How long does an ECG take - CORRECT ANSWER - 30 sec to 2 min
What point of attachment is the neutral electrode in the ECG - CORRECT ANSWER -
Right leg
How many chest and how many limb electrodes - CORRECT ANSWER - 6 chest and 4
limb
Uses of ECG - CORRECT ANSWER - measure arrhythmias (heart beating too fast or
slow or not normal rate)
Can be screening test for heart disease
Why does an ultrasound of uterus need a full bladder? - CORRECT ANSWER - Helps the
sound waves travel through as sound travels faster in denser mediums. Without it the sound
waves would bounce around in the "hollow" bladder. Uterus is behind bladder
What conditions would require an eye ultrasound - CORRECT ANSWER - Retinal
detachment, eye tumours, or eye inflammation
What are some normal parts of a QRS complex - CORRECT ANSWER - P wave (arterial
contraction/ depolarization)
T wave (vertical repolarization)
R wave (spike)
Q wave (slight dip)
