Chapter 17 - Radiology Flashcards
Who are Hospital Corpsmen (HM) performing diagnostic imaging?
Radiology technologists
The most common type of x-ray exam is what radiograph?
Chest
With what type of technology, physicians can view the inside of organs- a feat not possible with general radiography?
Computed Tomography (CT)
During what type of scan, atoms in the patient’s body are exposed to a strong magnetic field?
Magnetic Resonance Imaging (MRI)
Who “use sound waves to obtain images of organs and tissues in the body?
Sonographers
Who “produce diagnostic images of breast tissue using special x-ray equipment.”?
Mammographers
What is the art of recording images of a patient’s oral structures on film by using x-rays?
Oral radiography
X-rays were discovered in what year by a scientist named Wilhelm Conrad Roentgen?
1895
X-rays are a electromagnetic rays that travel in a wave motion and the measurement of this motion is called a what?
Wavelength
The density of the X-ray image is controlled by how many factors?
Four
The walls of X-ray rooms are lined with what providing an element of shielding to people outside the room?
Lead
The rule of what is based on the principle that any amount of radiation exposure, no matter how small, can increase the chance of negative biological effects such as cancer?
ALARA
Film badges are placed in the X-ray room behind the technician’s protective lead-lined barrier or at least how many feet from the tube head and never in the direct line of radiation during exposure?
6
Radioactive material shall not be used in such a manner to cause any non-radiation worker to exceed a total effective dose equivalent to how many mRem per year considering occupancy factors and source usage?
500
The NRC has established total whole body doses for radiation workers. It sets the annual total effective dose limit at how many mRem for the entire body?
5,000
