Ouch! Radiation Injury
When an x-ray photon iozines water it forms this:
What is FREE RADICAL formation?
These effects are seen in the person irradiated, not seen in future generations.
A. Somatic
B. Genetic
What is SOMATIC?
the total amount of radiation (both manmade and natural) for the average person in the United States
What is 6.2 mSv?
this includes 3.1 natural
3.1 manmade
this part removes low energy x-rays
What is aluminum filter/ aluminum discs?
What does 50 mSv, .05 Sv, and/or 5.0 rem per year correspond to
What is Maximum Permissable Dose for a Dental radiographer
The time from exposure to ionizing radiation and the appearance of observable clinical signs.
What is Latent Period?
There are 4 critical organs in line with the primary beam and receives secondary radiation. Name 2
What is?
Thyroid Gland
Bone Marrow
Skin
Lens of the EYE
List ONE way the dental radiographer is protected
What is standing 6 feet away
standing at a 90, 135 degree angle to the tubehead
raditation monitoring badge, waist level
which component restricts the size of the x-ray beam
What is lead collimator?
NAME 2 tissues/organs are known to be radiosensitive
What are: lymph cells
bone marrow
intestines
lens of the eye
oral mucosa
This theory of Radiation Injury involves x-ray photons that are absorbed within the cell and cause the formation of toxins, which in turn damage the cell.
A. Indirect
B. Direct
What is INDIRECT theory?
Examples of this radiation effect are cancer and mutation. No dose threshold; effects do not depend on the magnitude of the absorbed dose. The greater the does the greater the effect.
A. Stochastic
B. Non-Stochastic (Deterministic)
What is Stochastic?
The potential risk of dental radiography inducing a fatal cancer in an individual is about 3 in ( ).
What is 1 million?
Which shape PID produces the least scatter radiation
What is RECTANGULAR?
Name 2 radioresistant organs/tissues
What is
salivary glands, kidneys, thyroid gland, salivary gland, mature bone, nerve tissue, muscle tissue
This theory of radiation injury is very infrequent and cell damage results when ionizing radiation directly hits critical areas within the cell.
A. Indirect
B. Direct
What is DIRECT Radiation Injury?
Examples: erythema, hair loss, cataracts, and decreased fertility. Somatic effects that have a threshold; effects increase in severity with increasing absorbed rate.
What is Non-Stochastic effect?
The risk a person developing cancer spontaneously is much higher ( ) in 1 million.
What is 3,300?
this PID length and collimator would be best to reduce patient radiation exposure
8 inch or 16 inch
round or rectangular
What is 16 inch, rectangular
For a pregnant dental radiograper, they should not exceed .5 mSv in_________. (time period)
What is MONTH?
which of the following dental radiographic exams has the largest effective dose:
A. panoramic
B. complete series, 18 films
what is COMPLETE SERIES?
Which cells are most affected by radiation
what is young and rapidly dividing?
what is the name of the concept that all radiation exposure must be kept at a minimum
what is ALARA ( as low as reasonably achievable)?
the recommended size of the beam when using a round collimator
What is no more than 2.75 inches
Name one important way that a practitioner can lower the exposure of the patient to excess radiation
what is eliminate errors/need for retakes ?