NAVEDTRA 14295B CH 17 Flashcards
What are Hospital Corpsmen (HM) performing diagnostic imaging called?
Radiology technologists
What is the most common type of x-ray exam?
Chest
With what type of technology can physicians view the inside of organs?
Computed Tomography (CT)
During what type of scan can atoms in the patient’s body be 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 called?
Oral radiography
What year were X-rays discovered 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 wave motion is called a what?
Wavelength
How many factors is the density of the X-ray image controlled by?
4
What are the walls of X-ray rooms lined with that provide an element of shielding to people outside the room?
Lead
What rule 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
What program is designated to save Department of Defense (DOD) money by recycling precious metals and using those funds to offset the cost of supplies for DOD activities?
Precious metals recovery
Under what guidelines will precious metals be saved and turned into the Supply Department?
BUMEDINST 4010.3
What examination is conducted to obtain radiographs of the crowns, roots, and supporting structures fo the teeth?
Periapical
How many periapical radiographs does the full mouth periapical examination consists of?
14
What examination reveals the presence of interproximal caries, certain pulp conditions, overhanging restorations, improperly fitting crowns, recurrent caries beneath restorations, and resorption of the alveolar bone?
Interproximal
What type of examination is usually conducted when fractures of the jaw or gross pathological conditions are suspected?
Occlusal
What technique is used for exposing occlusal radiographs?
Bisected angle
What is the fastest advancing technology in healthcare imaging today?
Digital imaging
How many basic steps involved in processing X-ray film are there?
5
White light along with what else are the two basic sources of illumination a darkroom has?
Safelight
The length of exposure of undeveloped imaging film to the safelight should be limited to no longer than how many minutes?
2
What is the most commonly used method of processing medical and dental radiographs in the Navy?
Automatic processing
If processing a large quantity of X-ray films, the HM must avoid any mix-up. To do this, after inserting one patient’s X-ray films, how many seconds should go by before inserting the next patient’s films?
15
How often should the developer and fixer be changed at a minimum?
3 to 4 weeks
What type of X-ray machine is used to produce an extraoral radiograph that shows both dental arches and the temporomandibular joints?
Panoramic
