Show:
Radiation Protection
Equipment Operation and Quality Control
Image Acquisition and Evaluation
Image Procedures
Patient Care and Education
100
According to NCRP Report #160, the greatest source of natural background radiation represents what percentage of humans' radiation exposure?
What is 82%
100
What is atomic mass?
What is the number of protons plus the number of neutrons
100
What are the primary controlling factors of density?
What is mAs and in digital imaging it's window level.
100
What body type has the stomach and gallbladder low, vertical, and near the midline?
What is Asthenic
100
What is the process called that eliminates all organisms from the environment by gas sterilization, use of germicides, or use of dry heat?
What is surgical asepsis
200
What personal monitoring device is accurate to 1 mrem?
What is the Optically stimulated luminescence dosimeter (OSL)
200
The intensity of radiation is inversely proportional to the square of the distance between the source of radiation and the person receiving it.
What is the Inverse square law (Dose is 1/4 the square of the distance NOT 1/2)
200
What effect does the use of radiographic grids have on contrast?
What is increased contrast (grids absorb scatter photons)
200
What condition involves the posterior portion of the tibia and the medial and lateral malleoli?
What is a trimalleolar fracture
200
What is a sphygmomanometer is used for?
What is measure blood pressure (also known as a "blood pressure cuff")
300
Which photon-tissue interactionresults in total absorption of an incident x-ray photon?
What is Photoelectric interaction (results in contrast being produced on the image.
300
Self-induction is used in the operation of what device?
What is Autotransformer (Mutual induction occurs in the step-up and step-down transformers)
300
Elongation and foreshortening are examples of...
What is shape distortion
300
Which pathological condition is a collapse of lung tissue and is harder to penetrate?
What is Atelectsais
300
What is the first thing the radiographer should do when it is suspected that a patient is going into shock?
What is place patient in Trendelenburg position (then call for assistance)
400
Which is the unit of in-air exposure?
What is Roentgen (SI unit is the c/kg)
400
This is the point where the rays exiting the patient strike the input phosphor and it glows with visible light, releasing electrons from the photocathode.
What is the input phosphor of the image-intensifier tube (converting x-ray energy to visible light)
400
Exposure technique in digital imaging may be adjusted by:
What is increasing kVp (this is in alignment with ALARA)
400
When performing the parietoacanthial (Waters) projection for facial bones, the OML forms what degree of an angle with the image receptor?
What is 37 degrees
400
Is vomiting a mild, moderate, or severe reaction to a contrast agent?
What is severe
500
What is the annual effective dose limit for the general public, assuming infrequent exposure?
What is 0.5 rem or 500 mrem (1/10 the occupational limit which is 5 rem)
500
Based on quality control standards the collimator must be within what range of accuracy?
What is 2% of the SID
500
In digital imaging, what is the material that absorbs x-ray energy and emits part of that energy as visible light?
What is the scintillator
500
What will be projected into the foramen magnum when performing the AP axial (Towne) projection for skull?
What is the dorsum sellae
500
What is used to feed a patient or conduct gastric suction?
What is a NG tube