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Radiology-Petra
Flashcards on LLRT Class @ Petra Allied Health
| Question | Answer |
|---|---|
| ARRT | American Registry of Radiologic Technologists |
| ASRT | American Society of Radiologic Technologists |
| JRCERT | Joint Review Committee on Education in Radiologic Technology |
| LMXO | Limited X-Ray Machine Operator |
| Attenuation | Absorbtion of X-Rays |
| Bucky | Device that contains a Moving grid |
| Cassette | Holds the X-Ray Film |
| Central Ray | An imaginary line in the center of the X-Ray beam, used to align X-Ray tube to the Pt. |
| Collimator | A Box-Like device attached under the tube housing, allows you to vary the size of the Radiation field |
| Computed Radiography(CR) | Filmless system, films can be read directly from the computer, uses phosphor plates in the cassette. |
| Control Booth | Protective booth containing the control console, Lead Lined for protection |
| Control Console | Access point for the operator to set exposure times and factors to initiate exposure |
| Detent | Built into tube supports, stops a moving part in a specific location |
| Image Receptor(IR) | A system that contains X-Ray film and the film holder(cassette) |
| Latent Image | The "unseen" image, the image before it is processed to a "visable" one |
| Radiation Field | Cross section of the X-Ray beam and where it is used(4 squares) |
| Remnant Radiation | Remains of the primary beam after it has been attenuated by matter, "Exit Radiation", the pattern of the remnant radiation creates the image. |
| Scatter Radiation | Radiation that is scattered or created as a result of the attenuation of the primary X-Ray beam by matter. Travels in all directions and is very difficult to control, has less energy than the primary beam |
| Scatter Radiation Fog | The unwanted image exposure caused by the scatter radiation. |
| Tissue Density | Or mass, Bone has greater mass, therefore will absorb more radiation than less dense tissue such as fat, this varies the intensity of the X-Ray beam |
| Trendelenburg position | The head is 15 degrees lower than the feet |
| Tube Housing | Lead lined, surrounds the X-Ray tube. Some of the X-Rays are absorbed by the tube housing, X-Rays traveling in a useful direction exit the housingthrough the tube port |
| Tube Port | Portal for which X-Rays travel and make up the X-Ray beam |
| Upright Cassette Holder | Device to hold the IR in the upright position for radiography. Usually placed on a wall and adjustable in height. May incorporate a bucky or grid. |
| X-Ray Beam | Cone shaped beam comming down from the tube port and housing, contains the central ray |
| X-Ray Tube | The Source of X-Rays. |
| Ampere(A) | Measures the rate or current flow. |
| Atom | All matter is composed of, The Building Blocks, has neutrons, protons, and electrons |
| Binding Energy | Energy that binds electrons to their own shell, electrons near the nucleus have more binding energy than those in outer shells |
| Chemical Compound | A substance that consist of only one type of molecule, Ex: Water(H2O) |
| Circut | A continuous path where it connects to a power supply |
| Conductor | Electric charges that drift or flow in a vacuum, in certain gases, liquids, and metals, connected to make a circut |
| Current | (I) indicates current, and is the quanity of electrons flowing in a circut. Measured in Amps(A) or MiliAmps(mA) |
| Electromagnetic Energy | Consists of light, X-Rays, Radiowaves, microwaves, and other forms of energy. All have both electric and magnetic properties. |
| Electron | Are identical to all protons and neutrons. They are located in the Orbital shells, Charge: -1 |
| Element | Substance made up of only one type of atom |
| Frequency | The number of times per second that a crest passes a given point. |
| Intensifying Screens | Used to expose radiographs, Greatly reduce the quanity of radiation necessary to produce an image. Are plates coated with fluorescent crystals. |
| Ionization | When a neutral atom gains or loses an electron, the electric charges of its protons and electrons are no longer equal and produces and atom with an electric charge. |
| KiloVolts Peak(kVp) | |
| Mass | gdfg |
| Matter | dfdfg |
| MilliApere(mA) | fsdf |
| Molecules | fgsfg |
| Neutron | Inside the nucleus, Mass number: 1, Charge: 0,neither attracts or repels one another |
| Nucleus | Neutrons and protons together form the nucleus of an atom and form the center, Electrons circle the nucleus in orbits called shells. |
| Photon | The smallest possible unit of electromagnetic energy |
| Potential Difference | Is the Force or strength of the electron flow in the current. Measured in Volts(V), or kVp(kiloVolts peak) |
| Proton | Located in the Nucleus, Mass number: 1, Charge: +1, Positivly charged |
| Rectification | fgsfg |
| Resistance(R) | Is any propetry of the circut that hinders the flow of current. Measured in Ohms. Depends on 4 factors: Material, length, diameter and temperature. |
| Sine Wave | a repeating wave due to the changes in the electromagnetic field form a pattern called, Sinusoidal form or Sine wave |
| Transformer | A device used to produce the high voltage needed for X-Ray production |
| Volt(V) | Unit to measure Potential difference, |
| Wavelength | The distaance from one crest to another. |
Created by:
whitney walker
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