Term
| On November 8,1895 this man discovered x-rays: |
|
Definition
Wilhelm Conrad Roentgen
Note: For his discovery he received a Nobel Prize in 1901 |
|
|
Term
| X-rays are a type of electromagnetic radiation in what direction do they travel at the speed of light? |
|
Definition
| In a straight line, they cannot curve around a corner. |
|
|
Term
True or False:
An xray beam can be focused to a point. |
|
Definition
|
|
Term
| An attraction between the positive protons and the electrons is called: |
|
Definition
Electrostatic Force
Note: The higher the atomic number of an atom (more protons), the higher the electrostatic force will be for all electrons |
|
|
Term
| What force pulls the electrons away from the nucleus? |
|
Definition
|
|
Term
| If the distance between waves decrease the wave length becomes shorter what occurs in regard to frequency? |
|
Definition
|
|
Term
| Distance from the crest of one wave to the crest of the next wave is: |
|
Definition
|
|
Term
| The number of waves in a given distance |
|
Definition
|
|
Term
True or False
X-rays that have a shorter wavelength can penetrate farther |
|
Definition
|
|
Term
Referring to energy, if the wavenlength is short and the frequency is high will it have high or low energy?
|
|
Definition
|
|
Term
| What two electrodes do an x-ray tube consist of? |
|
Definition
- Cathode (Negative Charge)
- Anode (Positive Charge)
|
|
|
Term
| The x-ray beam is made of bundles of energy like: |
|
Definition
|
|
Term
| When electricity flows through the filament in the cathode, it causes it to get hot and release electrons which surround the filament this is called? |
|
Definition
Thermionic Emission
Note: The hotter the filament gets the greater the number of electrons that are released |
|
|
Term
True or False
Copper helps to reduce heat away from the target |
|
Definition
|
|
Term
| 99% of E+ is converted into heat the other 1 % is converted into what? |
|
Definition
|
|
Term
| Where are electrons released from? |
|
Definition
|
|
Term
| What type of material keeps the x-ray beam from scattering? |
|
Definition
|
|
Term
| The ability of a substance to emit visible light is: |
|
Definition
|
|
Term
| Electromagnetic radiation, beyond the red end of the visible spectrum, characterized by long wavelengths: |
|
Definition
|
|
Term
| A process in which an outer electron is removed from the atom so the atom is left positively charged: |
|
Definition
|
|
Term
| Electromagnetic radiation, beyond the violet end of the visible spectrum, that is characterized by short wavelengths |
|
Definition
|
|
Term
| A basic part of matter that consists of a nucleus and surrounding cloud of electrons |
|
Definition
|
|
Term
| A process in which an electron is moved to a higher energy level within the atom |
|
Definition
|
|
Term
| A bundle of radiant energy is called: |
|
Definition
|
|
Term
| A postively charged particle located within the nucleus of an atom: |
|
Definition
|
|
Term
| A decrease of intensity on the anode side of x-ray beam due to angle |
|
Definition
|
|
Term
| Metal deposits on the inner wall of the envelope that attract electrons from the cathode |
|
Definition
|
|
Term
| The control panel of the x-ray machine |
|
Definition
|
|
Term
| Controls the length of the exposure |
|
Definition
|
|
Term
| A positively charged electrode that acts as a target for the electrons from the cathode |
|
Definition
|
|
Term
| The peak of energy of the x-rays which determines the quality of beam |
|
Definition
|
|
Term
| The small area of the target with which electrons collide on anode |
|
Definition
|
|
Term
| Low energy circuit, when heated, releases electrons from their orbits |
|
Definition
|
|
Term
| Amount of electrical energy bein applied to the filament |
|
Definition
|
|
Term
| Metal commonly used in focusing cups |
|
Definition
|
|
Term
| Wave rectification creates constant electrical potential across the tube |
|
Definition
|
|
Term
| Wave rectification converts alternating to direct current |
|
Definition
|
|
Term
| A restricting device used to control the size of the primary beam |
|
Definition
|
|
Term
| Acts as the kilovoltage selector |
|
Definition
|
|
Term
| Negatively charged electrode that provides a source of electrons |
|
Definition
|
|
Term
| Partial outer shadow of an object |
|
Definition
|
|
Term
| Electrical energy being applied to anode and cathode to accelerate the electrons |
|
Definition
|
|
Term
| A recessed area where the filamen lies, directing the electrons toward the anode |
|
Definition
|
|
Term
| Common metal used in the filament of the cathode |
|
Definition
|
|
Term
| This produces a controlled x-ray beam and accelerates electrons while housing the cathode and anode |
|
Definition
|
|
Term
| The x-ray tube is encased in oil for this reason: |
|
Definition
|
|
Term
| Due to excess heat x-rays will scatter in all directions losing energy and will appear lighter on film this is called? |
|
Definition
"Pitting"
Note: Stationary/dental and small portable machines are prone to this occurenece if not properly used |
|
|
Term
True or False
Small focal spots result in greater detail |
|
Definition
True
Remember: Ideally you want a small focal spot with an adequately large target |
|
|
Term
| Is an equation, the difference between the actual and apparent focalspot |
|
Definition
|
|
Term
| What is the number one cause of tube failure? |
|
Definition
| Filament evaportaion due to high temperature and long heating times. Make sure everything is ready before you depress the button. |
|
|
Term
| The waring out of bearings due to unnecessary use of pre-exposure button can lead to what type of failure? |
|
Definition
Anode Bearing Failure
Remember:If it gets worse it can decrease anode speed leading to over heating of targets which results in Andode Target Failure |
|
|
Term
| Tube failure can be caused : |
|
Definition
| By either glass envelope damage or tube housing damage (shift of glass envelope or oil leak) |
|
|
Term
| What are some electrical components of the x-ray machine? |
|
Definition
- High-Voltage Circuit
- Line-Voltage Compensator
- Low-Voltage (filament) Circuit
- Timer Switch
|
|
|
Term
| Step-down transformer is placed between the cathode filament and the imput voltage, it reduces voltage to what? |
|
Definition
|
|
Term
| The step-up transformer increases voltage from 110 or 220 volts to what? |
|
Definition
|
|
Term
True or False
The fewer the turns in the coil on the secondary (output) side the lower the output voltage will be |
|
Definition
|
|
Term
| The auto transformers initial setting is 65 volts which means that it will or will not leave the auto transformer at 65 volts |
|
Definition
|
|
Term
True or False
The secondary coil in the step-up transformer has 1000 times as many turns as the primary coil |
|
Definition
|
|
Term
| When the low-voltage circuit heats the filament this last for how long? |
|
Definition
|
|
Term
True or False
Voltage starts at zero and reahces a maximum of 110 or 220 before going back to zero |
|
Definition
|
|
Term
| The process of changing AC to DC which occurs in the x-ray tube: |
|
Definition
|
|
Term
| This prevents the reverse flow of electrons when a half-wave rectification is occuring: |
|
Definition
| Valve tubes/AKA Self rectifiers |
|
|
Term
| This rectification has constant electrical potential across the tube at 120 time/second making twic the xrays produced and less exposure is needed: |
|
Definition
|
|
Term
| X-ray tubing rating is based on what four things? |
|
Definition
- Focal spot size
- Target angle
- Anode speed
- Electrical current- single or three phase
|
|
|
Term
| What is the maximum electrical thermal rating for portable and tabletop? |
|
Definition
- 60 to 90 kvp-portable
- 40 to 120 kvp- tabletop
|
|
|
Term
| A restricting device that control the primary beam and prevent unnecessary radiation to the patient and personnel: |
|
Definition
|
|
Term
| This supports the x-ray tube and can come in varying designs: |
|
Definition
|
|
Term
| What does the control panel (the console) consist of? |
|
Definition
- On/off switch
- Voltage compensator
- Kilovoltage selector
- Millamperage selector
- Timer
- Exposure Button- two stage button
- Warning light
|
|
|
Term
| These are used to increase the potential power of th electrical supply: |
|
Definition
|
|
Term
| This generator is used for more powerful/shorter exposure times: |
|
Definition
|
|
Term
| How can anode target failure be prevented? |
|
Definition
|
|
Term
| The maximum dose of radiation a person may receive in a given time period |
|
Definition
| Maximum permissible dose (MPD |
|
|
Term
| The quantity of energy imparted by the ionizing radiations to matter |
|
Definition
|
|
Term
| Damage to the body induced by radiation within the lifetime of the recipient |
|
Definition
|
|
Term
| Where red blood cells are produced |
|
Definition
|
|
Term
| The unit of absorbed dose |
|
Definition
|
|
Term
| Multiply the absorbed dose in tissue by quality |
|
Definition
|
|
Term
| A device used to measure radiation |
|
Definition
|
|
Term
| X-ray path as they leave the tube |
|
Definition
|
|
Term
| Charged ion chamber and electrometer |
|
Definition
| Pocket ionization chamber |
|
|
Term
| Chamber containing special compounds that become electrically altered |
|
Definition
| Thermoluminescent dosimeter |
|
|
Term
| Defects to genes of reproductive cells |
|
Definition
|
|
Term
| Interaction of beam with objects |
|
Definition
|
|
Term
| Methods of measuring radiation exposure |
|
Definition
|
|
Term
|
Definition
|
|
Term
| Where white blood cells are produced |
|
Definition
|
|
Term
| Palstic holder, film, lightproof package |
|
Definition
|
|
Term
| Dose of radiation equivalent to absorbed dose |
|
Definition
|
|
Term
True or False
Ionizing radiation is not hazardous |
|
Definition
|
|
Term
| What are two types of biologic damage that can occur due to overexsposure? |
|
Definition
- Somatic- damage done to body within lifetime
- Genetic- damage or injury to genes
|
|
|
Term
| Who is more prone to having their cells and tissue affected? |
|
Definition
- Persons younger than 18
- Pregnant women
Remember: Rapidly growing cells are more sensetive to radiation |
|
|
Term
| Cancer, cataracts, aplastic anemia ans sterility are clinical signs of this type of biologic damage |
|
Definition
|
|
Term
| How can you limit your exposure? |
|
Definition
- Adequate technique chart
- Positioning Aids
- PPE and other protective barriers
- Dosimetery badge
- Emergency procedure for malfunctioning requipment
- Quality control and test
|
|
|
Term
| Defines the MPD for occupational and non occupational exposed persons. This committee is a nonprofit organization, chartered by Congress and consisting of scientific committees of persons who are experts in aparticular area. |
|
Definition
National Committee on Radiation Protection and Measurements
Aka "NCRP" |
|
|
Term
| Is a program that approaches the rules and regulations to promote radiation safety |
|
Definition
ALARA
(As Low As Reasonably Achievable) |
|
|
Term
| What are two categories to quantify the amount of radiation received? |
|
Definition
- Absorbed dose
- Dose equivalent
|
|
|
Term
| What is the unit of absorbed dose |
|
Definition
| Gray(Gy) which replaces the previously used unit rad (1 Gy=100 rad) |
|
|
Term
| The unit of dose equivalent |
|
Definition
| Sievert which supersedes the rem which was previously used (1 Sv=100 rem) |
|
|
Term
| State and Federal Restrictions dictate that occupationally exposed individuals older than 18 years of age and wearing monitoring devices can receive up to how much exposure? |
|
Definition
0.05 Sv/year
Remember: Nonoccupationally exposed persons can recieve 10% of this figure (0.005 Sv/year) |
|
|
Term
| Consists of a plastic holder that contains a radiation-sensitive film in a lightproof package, which is sensitive to beta, gamma and x radiation. |
|
Definition
Film badge
Remember:This is the most common monitoring device |
|
|
Term
| This monioring device is the same size and shape as a pen and fits conveniently in the wearer's pocket. It consists of an ion chamber and an electrometer. |
|
Definition
Pocket Ionization Chamber
Remember: The chamber is charged before use, and subsequent radiation discharges the ions. |
|
|
Term
| Contains special compounds(Lithium Fluoride and Calcium Fluoride) that are electrically altered by ionizing radiation and are sent back after a period of time for heat exposure which when heated emit light directly proportional to the amount of radiation they have absorbed. |
|
Definition
Themoluminescent Dosimeter (TLD)
Note: Currently, film badges cost approximately 25% less than TLD badges. |
|
|
Term
| Why would you want to avoid retakes? |
|
Definition
| Reduce exposure to patient and personnel, saves time and money |
|
|
Term
| PPE is made from impregnanted rubber and other materials what is the range of thickness (lead)? |
|
Definition
|
|
Term
| If there is a crack when xray gloves what color would the crack be? |
|
Definition
|
|
Term
|
Definition
Vertically over a round surface
Remember: You don't want to fold your PPE it can cause the lead to crack |
|
|
Term
Radio opague content medium that moves through the stomach and intestines:
Hint: Used when performing a Fluoroscopy |
|
Definition
|
|
Term
| What do you never want to do when performing a fluoroscopy? |
|
Definition
| Palpate the anatomical area while the machine is operating |
|
|
Term
|
Definition
|
|
Term
| Release of electrons from orbits by heat |
|
Definition
|
|
Term
| Device used to measure anatomic parts |
|
Definition
|
|
Term
| One thousandth of an ampere, # of x-rays |
|
Definition
|
|
Term
| Distance between source of x-rays and image receptor |
|
Definition
Source Image Distance
(SID) |
|
|
Term
| The difference between two adjacent densities |
|
Definition
|
|
Term
| Method of estimating kilovoltage in relation to thickness |
|
Definition
|
|
Term
| Responsible for acceleration, and electrical difference between cathode and anode |
|
Definition
|
|
Term
| Variation in intensity of radiation as the distance from the source changes |
|
Definition
|
|
Term
| Period of time x-rays leave the x-ray tube |
|
Definition
|
|
Term
| Degree of blackness on film |
|
Definition
|
|
Term
| Multiplying milliamperage by the tim |
|
Definition
|
|
Term
| Determined by the penetrating power (kilovoltage) |
|
Definition
Quality
Remember: The shorter the wavelength the more penetrating power and the ability it has |
|
|
Term
| Number of x-rays traveling from the tube toward film (mA) |
|
Definition
Quantity
Remember: Intensity of the x-ray beam is the # of x-rays traveling from the tube towards the film in a period of time |
|
|
Term
| In order for an x-ray tube to produce x-rays this must occur |
|
Definition
| Electrical current must be supplied to bothe filament and the field between the cathode anode |
|
|
Term
Measured in thousand of volts responsible for accelerating the electrons from the cathode to the anode relates to penetrating power
|
|
Definition
|
|
Term
| Determines the quality of x-rays the higher kVp means more penetrating beams (more x-rays reach the film) |
|
Definition
|
|
Term
| Formula for Sante's Rule: |
|
Definition
|
|
Term
| As mA is increased the # of electrons is decreased or increased |
|
Definition
|
|
Term
| What are the advantages of high mA settings |
|
Definition
- Allows or shortter time settings
- possibility of motion decreased
- Allows examination of thivker area on patient
- Decrease in time-less exposure to personnel
|
|
|
Term
| What is the most common artifacts in veterinary medicine |
|
Definition
|
|
Term
| As SID decrease the intensity of x-rays will |
|
Definition
Increase
Remember: SID Increases the intensiy of xrays decrease |
|
|
Term
|
Definition
|
|
Term
| When the Sid decreases the image sharpness_____ |
|
Definition
|
|
Term
| Detail perception on a radiograph |
|
Definition
|
|
Term
| Distortion to image, longer than actual size |
|
Definition
|
|
Term
| Distance between source of x-rays and the grid resulting in no grid cutoff |
|
Definition
|
|
Term
| The definition of edges on anatomical structures |
|
Definition
|
|
Term
| Difference in density and mass of two anatomic structures |
|
Definition
|
|
Term
|
Definition
|
|
Term
| Density difference on a radiograph |
|
Definition
|
|
Term
| A grid with angled lead strips |
|
Definition
|
|
Term
| Radiation reflected from behind the image back to the image |
|
Definition
|
|
Term
| Degree of blackness on a radipgraph |
|
Definition
|
|
Term
| Moves across the x-ray beam during exposure |
|
Definition
|
|
Term
| Also called a crisscross grid |
|
Definition
|
|
Term
| Absorption of primary x-rays by the grid lines |
|
Definition
|
|
Term
| Lead strips are parallel and at right angles |
|
Definition
|
|
Term
| height of lead strips per centimeter area |
|
Definition
|
|
Term
| Amount of exposure needs to be increased due to grid absorption |
|
Definition
|
|
Term
| Distortion to image, shorter than actual size |
|
Definition
|
|
Term
| Radiographic Quality depends on radiographic : |
|
Definition
- Density
- Contrast
- Magnification and distortion
|
|
|
Term
| Black areas on an x-ray are produced by: |
|
Definition
| Metallic Silver deposits in film coating being converted by exposure to x-rays and processing chemicals |
|
|
Term
| Many black/dar areas mean the film was exposed to higher density which means |
|
Definition
| More x-rays have reached the film |
|
|
Term
| What are some factors affecting density: |
|
Definition
- Total number of x-rays (mAs)
- Penetrating power (kVp)
- Developing Time (processing)
- Temperature of developer (Processing)
- Types of tissue
- Thickness of tissue
Remember: If the first four factors are increased the greater the denisty can be achieved |
|
|
Term
True or False
The less tissue density the less radiogrpahic density there is |
|
Definition
False
The greater the tissue density the less radiogrpahic density will be |
|
|
Term
| If the mA is to low how will the film appear? |
|
Definition
Pale
Note: If it is high the film have an overall black appearance |
|
|
Term
| Great density difference equals a shorter scale appearing black and white with few grays this is: |
|
Definition
High Contrast
Remember: This is preferred for spin or extremity films (Bone) Lower kVp, lower contrast is the opposite |
|
|
Term
| What are some factors affecting Contrast? |
|
Definition
- Subject Contrast
- kVp level
- Scatter radiation
- Film type and film fog
|
|
|
Term
| This reduces backscatter/scatter making less stray x-rays hitting the table or tray |
|
Definition
|
|
Term
| As grid ratio increases what happens to the efficiency? |
|
Definition
|
|
Term
| Describes the definition of edges between the anatomical structure on an x-ray |
|
Definition
|
|
Term
| The femur needs to be parallel to the cassette , if it is no the femur will appear ____. |
|
Definition
|
|
Term
| The tendency of a luminescent compound to continue to give off light after x-radiation has stopped. |
|
Definition
|
|
Term
| A transparent flexible polyester support layer of radiographic film |
|
Definition
|
|
Term
| A lightproof encasement designed to hold x-ray film and intensifying screens in close contact. |
|
Definition
|
|
Term
| A layer of radiographic film made of gelatin containing suspended silver halide crystals |
|
Definition
|
|
Term
| The exposure range of a film that will produce acceptable densities |
|
Definition
|
|
Term
| A special radiographic diagnostic method by which a "live view" of the internal anatomy is possible |
|
Definition
|
|
Term
| Sheets of luminescent phosphor crystals bound together and mounted on a cardboard or plastic base |
|
Definition
|
|
Term
| An invisible image on the x-ray film after it is exposed to ionizing radiation or light before processing |
|
Definition
|
|
Term
| Film that is more sensitive to ionizing radiation than to fluorescent light |
|
Definition
|
|
Term
| An artifact of faster screens that results in density variation due to random spatial distribution of the phosphor crystals within the screen |
|
Definition
|
|
Term
| A layer of an intensifying screen that reflects the light from the phosphor layer toward the film |
|
Definition
|
|
Term
| Film with silver crystals that is more sensitive to fluorescent light emitted form intensifying screens than to ionizing radiation |
|
Definition
|
|
Term
| A compound of silver and bromine, chlorine, or iodine, all of which are in the halogen group of elements |
|
Definition
|
|
Term
| A clear protective layer on radiographic film |
|
Definition
|
|
Term
| How often should screens be cleaned |
|
Definition
|
|
Term
| What is material can the front of a cassette be made of? |
|
Definition
| Aluminum, polycarbonate, magnesium and carbon fiber |
|
|
Term
| The back of a cassette is lined with this material to help in prevention of backscatter which would cause fogging of the film |
|
Definition
|
|
Term
| The area marked in the corner of the cassette front to indicate the prescence of a lead blocker is approximately what in measurement? |
|
Definition
|
|
Term
| Inside the cassette, both sides can be lined with what material to ensure close contact of the film and screens? |
|
Definition
| Felt or Foam Pressure Pads |
|
|
Term
| How many intensifying screens are normally inside the cassette to sandwhich the x-ray film? |
|
Definition
|
|
Term
| Over 95% of the exposure to film is due to: |
|
Definition
| Light emitted form the intensifying screens |
|
|
Term
| What layers make up intensifying screens? |
|
Definition
- Base or support
- Reflective layer
- Phosphor crystal layer
- Protective coat
|
|
|
Term
| Rare-earth phosphors fall in the___light part of the spectrum. |
|
Definition
Green
Note: Calcium Tungastate falls under the blue light part of the spectrum |
|
|
Term
True or False
The light conversion of rare-earth screen is four times as great as that of calcium tungstate screen. |
|
Definition
|
|
Term
True or False
Within certain limits, the larger the crystals the greater its light emulsion resulting in less x-radiation necessary to expose the x-ray film |
|
Definition
|
|
Term
| In radiography, screen speed is inversely proportional to the exposure required to produce a given effect. So if a fast screen requires a small exposure a slow screen requires _____. |
|
Definition
|
|
Term
| An invisible image on a film after exposure to xrays and before developing due to silver halide crystals in the film absorbing x-rays and splitting apart |
|
Definition
Latent Image
Note:Partially split crystals convert and turn black unecposed crystals are cleared away from the film in the fixer |
|
|
Term
| What is the most common versatile speed? |
|
Definition
| 300-400 speed (medium speed) |
|
|
Term
True or False
Screened film has greater detail then non-screen film |
|
Definition
|
|
Term
| Film care/storgae: The film should be held vertically kept in a cool place (50-59°F) and should be kept at low humidity (____). |
|
Definition
|
|
Term
| Chemicals that increase the pH of the developer and subsequently increase the rate of developing. |
|
Definition
|
|
Term
| Compounds that accelerate the fixing process and neutralize the alkaline developer. |
|
Definition
|
|
Term
| Compunds in the fixer that maintain proper solution pH. |
|
Definition
|
|
Term
| Also called fixing agents; a portion of the fixer that dissolves and removes the unexposed silver halide crystals from the film emulsion. |
|
Definition
|
|
Term
| A chemical solution that converts the latent image on a film to a visible image by converting the exposed silver halide crystals to black metallic silver. |
|
Definition
|
|
Term
| Chemical solution used to convert a latent image on x-ray film to visible image. |
|
Definition
|
|
Term
| The process by which the unexposed silver halide crystals are removed from the film and the gelatib is hardened. |
|
Definition
|
|
Term
| The chemical solution used during fixation |
|
Definition
|
|
Term
| Chemicals added to the fixing solution or to developers in automatic processors to prevent excessive emulsion swelling. |
|
Definition
|
|
Term
| Chemicals that prevent rapid decomposition of the developer or fixer. |
|
Definition
|
|
Term
| Often potassium bromide and potassium iodide are used as _______or antifoggants. _____ limit the action of the developing agent to the exposed silver bromide crystals in the film. |
|
Definition
|
|
Term
| A darkroom artifact produced by variable chemical temperatures that cause irregular expansion and contraction of the film emulsion, resulting in a mottled density appearance. |
|
Definition
|
|
Term
| A solution (usually water) used to remove excess developer solution before the film is placed in the fix tank. |
|
Definition
|
|
Term
| Water, dissolves the ingredients of the developer or fixer and diffuses the chemical into the emulsion of the film. |
|
Definition
|
|
Term
| A solution of acetic acid and water used to "stop" the development of the x-ray film by rapidly neutralizing the alkaline developer solution. |
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Definition
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Term
| A dark red safe light filter is ideal because: |
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Definition
| It protects both blue and green light sensitive film unlike brown safe light filters that only protect blue light sensitive film. |
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Term
| What colors should the walls be in a dark room so it provides reflection from the safe light? |
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Definition
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Term
| What is the range of wattage the safe light bulb should be? |
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Definition
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Term
| What information should be on the radiograph? |
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Definition
- Name of hospital/vet
- Date
- Patient name
- Owner's name
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Term
| How are lead digits used for id? |
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Definition
| Lead digits are placed in a holder or taped to cassette and are exposed to radiation. The lead absorbs the radiation from the x-ray beam so film under is left transparent. |
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Term
| What is the disadvantages of using lead digits? |
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Definition
- Time consuming
- Letters are eaily lost
- Limits tight collimation
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Term
| How can lead impregnanted tape be used to label a radiograph? |
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Definition
| The lead is displaced when written on leaving indentations and then is adhered to the cassette and exposed during the radiographic procedure leaving markings. |
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Term
| What equipment is needed for the photo-imprinting label system? |
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Definition
- Lead blocker 3x7cm
- Photo-imprinter machine
- Identification card
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Term
| What are the left and right markers used for? |
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Definition
| To identify right or left limbs or to identify left or right side of the thorax or abdomen. |
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Term
| Describe what is on the dry side of the dark room? |
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Definition
| This is where the film bin is located and the cassettes are loaded and unloaded. Dry channel and clip hangers are also located on this side so film can be attached before going to the wet side for processing. |
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Term
| Describe the ideal darkroom: |
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Definition
- 6x8 feet
- Clean
- Organized
- Lightproof
- Cool with low humidity
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Term
| Describe the wet side of the dark room? |
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Definition
| The three tanks are located in this area for film processing. Drying and viewing screens are also on this side of the room. |
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Term
| Automated processing procedures take about 90 seconds how long does manual processing take. |
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Definition
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Term
| After the film has been in the developer it will retain approximately how many milliliters of solution? |
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Definition
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Term
| Developing agents should be kept at what temperature? |
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Definition
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Term
| When is the wash tank used during manual developing? |
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Definition
| The wash tank is used after fixing for 20 to 30 minutes. |
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Term
| The radiograph is developed for 5 minutes and takes double the amount of time to fix(10 minutes). When can the film be briefly viewed during the fixing process. |
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Definition
After the film has been in fix for 1 minute.
(page. 82) |
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Term
| After developing has transpired for 5 minutes how long should a rinse bath been done for before placing the film in the fix tank. |
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Definition
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Term
| If a direct safe light is pointed directly at the work area an indirect safe light would be directed towards____. |
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Definition
The Ceiling
Remember: The distance of the safe light should be no closer than 4 feet from the working area. |
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