Patient Care
You are working in the outpatient department and receive a patient who is complaining of pain in the right hip joint, however, the requisition asks for a left femur examination. What should you do?
Check with the referring physician
According to the National Council on Radiation Protection and Measurement (NRCP), the monthly gestational dose-equivalent limit for embryo/fetus of pregnant radiographer is:
0.5 mSv
Grid inter-space material can be made of:
Aluminum or plastic fiber.
What positioning line is place perpendicular to the IR for a PA projection of the skull?
OML
With what frequency must radiographic equipment be checked for linearity and reproducibility?
Annually.
Mention three examples of nonverbal communication.
Appearance, Eye contact and Touch.
What percentage of public exposure to ionization radiation is from medical sources?
50%
If a lateral projection of the chest is being performed on an asthenic and the outer photocells are selected, what is likely to be the outcome?
The IR exposure will be decrease or underexposure of the part of interest will occur.
The proximal radius and ulna are seen free of superimposition in what projection.
Lateral oblique elbow
Describe the Bremsstrahlung (Brems) radiation production.
An electron approaching a positive nuclear charge changes direction and loses energy.
Gas producing powder or crystals usually are ingested preliminary to which examination?
Double-contrast gastrointestinal (GI) series
Which cell types has the greatest radio-sensitivity in the adult human?
Lymphocytes
How would an increase in kilovoltage affect contrast, scatter radiation and exposure rate?
Contrast would decrease and scatter radiation and exposure rate would increase.
Which position is obtained with the patient lying supine on the radiographic table with the CR directed horizontally to the iliac crest?
Dorsal decubitus position
What material are the filaments made of?
Tungsten
The type of shock often associated with pulmonary embolism or myocardial infarction is classified as:
Cardiogenic
Mention three sources of natural background radiation.
Radon, Internal sources and Thoron
The component of a CR image plate (IP) that records the radiologic image is the:
Photostimulable phosphor (PSP).
Flattening of the hemidiaphragms is characteristic of which condition?
Emphysema.
Which system functions to compensate for changing patient/part thicknesses during fluoroscopic procedures?
Automatic brightness control (ABC)
Mention at least three routes of drug administration.
Sublingual, topical, parenteral and oral.
A time of 1.5 minutes is required for a particular fluoroscopic examination, whose exposure rate is 275 mR/h. What is the approximate radiation exposure for the radiologic staff present in the fluoroscopy room during the examination?
6.87 mR
HVL is affected by the amount of:
KV and total filtration.
What can be done to better visualize the gastroduodenal surface on the posteroanterior (PA) projection of a barium-filled high and transverse stomach?
Angle the CR 35 to 45 degrees cephalad.
What is the relationship between HVL and KVP?
As KVP increases, the HVL increases.