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sexy rad tech

finals

QuestionAnswer
What is mass? The quantity of matter as described by its energy equivalence. Its measured in (kg)
What is matter? Is anything that occupies space and has mass. Fundamental blocks of matter are: atoms and molecules
What is energy? Is the ability to do work.
Ionization Is the removal of an electron from an atom with which it interacts.
Radiation Is the transfer of energy. Energy emitted and transferred through space is RADIATION. the sound is a form of radiation.
Exposed or irradiated Matter that intercepts radiation and absorbs part or all of it is said to be irradiated. During a radiographic examination, the patient is exposed to x-rays. The patient is said to be irradiated.
Ion pair The orbital electron and the atom from which it was separated. The electron is a negative ion and the remaining atom is a positive ion.
Ionizing radiation Any type of energy that is capable of ionizing matter
Electromagnetic radiation X-rays, gamma rays, and ultraviolet light are the only forms of
Ionizing radiation 2 main categories: natural environmental radiation and man-made radiation.
Natural environmental radiation results in an annual dose of approximately 300 millirem(mrem) (3 millisievert {mSAv})
Man-made radiation results in approximately60 mrem (0.6 mSv)
rem is the unit of radiation equivalent man. mrem is 1/1000 of a rem
Natural environmental radiation consists of 3 components: cosmic rays, terrestrial radiation and internally deposited radionuclides. The largest dose is radon.
Radon is a radioactive gas that is produced by the natural radioactive decay of uranium, which is present in trace quantities in the Earth.
Cardinal principles of radiation control time, distance, and shielding
Always practice ALARA Keep radiation exposures As Low As Reasonably Achievable
Filtration Metal filters, usually aluminum or copper are inserted into the x-ray tube housing so that low energy x-rays are absorbed before the reach the patient. they have little diagnostic value.
Collimation restricts the useful x-ray beam to the part of the body to be imaged and spares adjacent tissue from unnecessary exposure. It also reduces scatter radiation and improves image contrast.
Intensifying Screens Examinations conducted with radiographic intensifying screens reduce exposure of the patient to x-rays by more than 95% compared with examinations conducted without radiographic intensifying screens
Protective Apparel Lead aprons and gloves
Gonadal Shielding Should be used with all persons of childbearing age when the gonads are in or near the useful x-ray beam and when use of such shielding will not interfere with the diagnostic value of the examination
Protective Barriers xxxx
PHYSICS is the study of interactions of matter and energy in all their diverse forms
Base quantities are: mass, length and time
Secondary quantities are called derived quantities because they are derived from ta combination of one or more of the three base quantities.
Special quantities are: those of exposure, dose, equivalent dose and radioactivity
The meter is based on the speed of light
Every measurement has 2 parts: a magnitude and a unit
Mechanics is a segment of physics that deals with objects at rest (statics) and objects in motion (dynamics)
Velocity speed, is a measure of how fast something is moving or, more precisely, the rate of change of its position with time.
Weight is a force on a body caused by the pull of gravity on it. Units of weight are the same as those for force: newtons and pounds. It is the product of mass and the acceleration of gravity on Earth: 1 lb =4.5N
Momentum is the product of mass of an object x velocity
Work applying a force over a distance. Unit is Joule (j). When you lift a cassette you are doing work. It is the product of force and distance.
X-rays ionizing electromagnetic radiation
Newtons Law of Motion 1)Inertia = a body at rest will remain at rest and a body in motion will continue in motion until acted on by an outside force
2) Force= the force applied to move an object is equal to the mass of the object multiplied by the acceleration
3) Action/Reaction= For every action, there is an equal and opposite reaction
Created by: 730291082