Worksheet 1 Flashcards
Length is one of three fundamental measurements used in radiology. List two examples of length that is used by a technician.
How thick the patient is and the distance from the x-ray tube to the patient.
Name the 3 particles that make up the atomic structure AND where they are located.
Electron: orbits the nucleus of the atom
Proton: in the nucleus of the atom
Neutron: in the nucleus of the atom
Explain what the letter Z stands for.
Another way to notate the atomic number (the number of protons in the nucleus).
Explain why/how the element lead’s Z number (82) effects radiation.
The higher the Z number the “stronger” the atom becomes therefore Lead can block radiation very effectively.
Define isotope.
An atom that has the same number of protons but a different number of neutrons. The atom has the same atomic number (Z) but a different mass number (A).
A shorter wavelength equals _______ frequency and _______ energy and a longer wavelength equal _______ frequency and _______ energy.
high
increased
low
decreased
Name the 3 essential items to all x-ray units. (External parts).
High voltage transformer
x-ray generator
x-ray tube
What 2 main components are housed in the X-ray tube?
anode and cathode
What 2 types of anodes might you see as a technician?
Rotating anode and stationary anode
Describe the Anode Heel Effect.
The Anode Heel effect means that the radiation is more intense on the cathode side than on the anode side of the x-ray tube. This means that the thicker end of the animal needs to be placed on the cathode side of the x-ray tube.
Describe what happens in the X-ray tube (in chronological order) to form X-rays.
Heating the cathode by electricity makes a cloud of electrons > filaments of the cathode are located on the outer rim of the anode on a device called the focusing cup > the focal spot on the anode produces the x-rays when the heat is dissipated from the cathode > x-rays are projected down to the patient from the anode.
Define radiographs.
A digital photographic record that is produced from x-rays passing through an object. The x-rays are shadows of the object being x-rayed.
What is a vet tech’s role in radiology?
We want to be able to take high quality images with the least amount of radiation exposure to ourselves and others.
It will be important to know the anatomy of the animal and understand anatomical directions.
Name 2 of the 5 laws of Electrostatics.
Law #1 – Like charges repel, unlike charges attract.
This has to be how my husband and I found each other and this is how I remember this law.
Law #2 – Inverse square law.
The closer the x-ray tube is to the patient, the amount of radiation intensifies.
what does kVp stand for
kilovoltage peak
