Term
| What is negatively charged and is the site of electron production? |
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Definition
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Term
| What is positively charged and is the target site for electrons? |
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Definition
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Term
| What does a smaller focal spot result in? |
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Definition
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Term
| What does a large focal spot result in? |
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Definition
| More scatter and loss of detail |
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Term
| What does the mA selector control? |
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Definition
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Term
| What does the kVP selector control? |
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Definition
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Term
| What is radiographic contrast controlled by? |
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Definition
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Term
| What is radiographic density controlled by? |
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Definition
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Term
| What's the purpose of x-ray grids? |
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Definition
| To control scatter radiation |
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Term
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Definition
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Term
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Definition
| Magnetic resonance imaging |
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Term
| Where do you measure for a lateral/VD thorax? |
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Definition
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Term
| What is the cranial/caudal border for a lateral/VD thorax? |
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Definition
| Point of shoulder joint (thoracic inlet)to 1st lumbar vertebrae |
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Term
| Where do you measure for a lateral/VD abdomen? |
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Definition
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Term
| What is the cranial/caudal border for a lateral/VD abdomen? |
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Definition
| Feel for sternum and go 2-3 inches cranial to coxofemoral joints |
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Term
| What is very important for thoracic/lumbar spine views? |
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Definition
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Term
| What is the cranial/caudal border for thoracic spine films? |
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Definition
| C7 (shoulder joint) to L1 (last rib) |
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Term
| What is the cranial/caudal border for lumbar spine films? |
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Definition
| Just above last rib to stifle area of femur |
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Term
| What are the cranial and caudal borders for stifle views? |
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Definition
| Joints above and below stifle (hip to ankle) |
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Term
| What is the amount of energy produced by? |
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Definition
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Term
| What controls the acceleration of electrons? |
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Definition
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Term
| T/F Electrons from the cathode have a collision with the target on the anode and heat and x-rays are produced. |
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Definition
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Term
| What are 2 types of anodes? |
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Definition
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Term
| Why shouldn't you hold the rotor button down any longer than you have to? |
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Definition
| The filament is heating during this time and it will shorten the lifespan of it |
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Term
| Grids are used for what reason? |
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Definition
| To reduce scatter from hitting the film only |
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Term
| Grids should always be used is the body part is thicker than what? |
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Definition
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Term
| T/F The sensitivity of x-ray film to x-rays is poor. |
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Definition
| True, intensifying screen helps |
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Term
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Definition
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Term
| How often should you quality control and calibrate your x-ray machine? |
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Definition
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Term
| What are white areas on an x-ray? |
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Definition
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Term
| What are black areas on an x-ray? |
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Definition
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Term
| What are the 5 radiographic opacities? |
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Definition
| Gas, fat, fluid, mineral, and metal |
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Term
| What will increased kvp do to contrast? |
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Definition
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Term
| High mAs and low kVps produce what type of image? |
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Definition
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Term
| What is the only thing mA affects? |
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Definition
| Density (Darkness or brightness) |
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Term
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Definition
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Term
|
Definition
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Term
|
Definition
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Term
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Definition
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Term
| Smaller focal spot = ? detail |
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Definition
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Term
| What is kVp= (2x tissue thickness) + FFD + grid calculation? |
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Definition
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Term
| What are technique chart specific to? |
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Definition
| The film/screen combo that you're using |
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Term
| What's an ideal film in veterinary medicine? |
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Definition
| High mAs and low kVps (allows us to increase contrast) |
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Term
| What are good mAs for a tabletop extremity? |
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Definition
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Term
| What are typical mAs for a thorax view? |
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Definition
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Term
| What are typical mAs for a abdominal view? |
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Definition
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Term
| What are typical mAs for a spine view? |
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Definition
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Term
| What do you use Sante's Rule? |
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Definition
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Term
| What type of grid to most clinics have? |
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Definition
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Term
| What should you do with the kVp if the image is too dark? |
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Definition
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Term
| What are the main ingredients in film emulsion? |
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Definition
| Silver halide crystals and gelatin (to prevent clumping) |
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Term
| What are 6 film storage and handling artifacts? |
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Definition
| Pressue/crescents, scratches, fingerprints, static, material in cassette, and fog |
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Term
| What are high latitude films? |
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Definition
| Low contrast (many shades of gray) |
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Term
| T/F If your screen emits blue light, you must use film that is sensitive to blue light. |
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Definition
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Term
| What color is unexposed silver halide crystals? |
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Definition
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Term
| T/F When the emulsion is exposed to light from the intensifying screen, portions of the silver halide are converted to metallic silver. |
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Definition
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Term
| What consists of reducing agents that convert silver halide crystals into metallic silver? |
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Definition
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Term
| What happens if the solutions are too hot? |
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Definition
|
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Term
| What happens if the solutions are too cold? |
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Definition
| They will be underexposed |
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Term
| T/F Increasing temperature decreases the amount of time it takes to develop the film |
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Definition
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Term
| How long does manual processing take? |
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Definition
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Term
| How long does automatic processing take? |
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Definition
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Term
| How often should QC be done on the gowns & gloves? |
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Definition
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Term
| DLPM, DMPL, PMDL, & PLDM are labels for what film type? |
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Definition
| Oblique (xray enters patient at an angle) |
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Term
| How should you position a dog for a ventrodorsal view of the skull? |
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Definition
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Term
| A rostrocaudal closed mouth view is aka? |
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Definition
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Term
| In what frontal sinus view do you place animal in dorsal recumbency with nose pointing upward (perp. to cassette)? |
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Definition
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Term
| What skull view should be done to look at the nasal cavities? |
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Definition
| Ventrodorsal open-mouth view |
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Term
| What skull view should you do to look at the tympanic bullae? |
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Definition
| Rostralcaudal open-mouth view |
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Term
| What are the cranial/caudal borders for a cervical spine view? |
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Definition
| Base of skull to spine of scapula |
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Term
| How to ultrasonic sound waves travel? |
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Definition
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Term
| What's the number of cycles or waves completed in a second & is measured in Hertz? |
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Definition
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Term
| High/Low frequency: Create high resolution images, but is unable to penetrate deep tissues. |
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Definition
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Term
| What % of the time is ultrasound transducers emitting pulses? |
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Definition
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Term
| What's it called when a beam passes through a structure with low acoustic impedence? |
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Definition
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Term
| What is the gradual weakening of the ultrasound beam as it passes through tissues? |
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Definition
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Term
| In ultrasound, what occurs because of inadequate penetration by sound waves? |
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Definition
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Term
| What would cause more reflection on ultrasound, Bone/gas or Liver/fat? |
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Definition
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Term
| In ultrasound, what occurs when the beam hits gas or air and makes weakening parallel lines on screen? |
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Definition
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Term
|
Definition
| Brighter/darker ultrasound image |
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Term
| In ultrasound, what's display mode A used for? |
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Definition
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Term
| What's the most common display mode used in ultrasound? |
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Definition
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Term
| What ultrasound mode is used for the heart? |
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Definition
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Term
| What ultrasound mode is used for the heart? |
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Definition
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Term
| T/F Low frequency can see deeper into abdomen on ultrasound, thus requiring less hertz. |
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Definition
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Term
| What's used to treat hyperthyroidism in felines but is expensive? |
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Definition
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Term
| What radionuclides is used in horses? |
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Definition
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