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Test Concepts
Concepts from McGraw and Correctec
| Question | Answer |
|---|---|
| Which distortion occurs when the beam is not perpendicular to the anatomy? | Elongation: part is longer than the actual length. Beam or IR is not aligned to anatomy. |
| A dose of 100 mGy can cause: | Cancer: it is non threshold. |
| Ionization of macro-molecules within the body result in: A. lethal damage that is repairable B. mutations to the DNA C. Non-lethal damage that is repairable | Non-lethal damage that is repairable: this occurs with majority of interactions. |
| Short-term effects of radiation are: 1. probabilistic 2. deterministic 3. stochastic 4. threshold | 2 and 4: they require a threshold and are deterministic |
| Nitroglycerin administration | sublingual |
| Which of the following is NOT a reliable method for taking someone's temperature? A. orally B. rectally C. forehead D. axilla | on the forehead. |
| Digoxin treats what? | heart failure: delivered orally |
| What is a track from a deep structure to the skin called? | sinus |
| Adrenaline synonym | epinephrine |
| When selecting a site for venipuncture, you should select one that is the most _____ site in which the desired needle can be accommodated. | distal: allows for more access in the future |
| Aminophylline treats: | asthma |
| Medication reconciliation definition | reviewing the medication a patient is taking and determining if there are any concerns for administering contrast media |
| A sialogram uses what kind of contrast? | Oil-based iodinated contrast |
| If a patient has high blood pressure, what will their pulse rate be? | slow |
| What kind of drug is heparin? | Anticoagulant |
| What is the flow rate for a drip infusion? | 10-20 drops per minute |
| Which of the following are types of electromagnetic radiation? 1. alpha 2. beta 3. gamma | only gamma: alpha and beta are considered particulate radiation because they have mass |
| Convert 68 degrees fahrenheit to celcius | 20 degrees: 5/9(F-32) |
| What fraction is the same as 10 tot he -3 power? | 1/1000 |
| What must be applied in order to set a resting body in motion? | force |
| What formula states Newton's second law? | F=ma |
| What is a semi-conductor? | a device that only allows current to flow in only one direction |
| How many centimeters are in an inch? | 2.54 |
| Put these in order from shortest to longest wavelength: visible light, radar, x-ray and UV | x-ray, UV, visible light and radar |
| What interaction occurs with energies over 100 keV? | compton effect |
| Definiation of power | the rate work is done |
| Ionization results from which of the following interactions of radiation with tissue? A. characteristic B. bremstrahlung C. photoelectric D. coherent | photoelectric. Coherent scatter raises the electron to a higher energy but does not remove an electron. Characteristic and brems occur in production, not in tissue |
| In diagnostic range, what is the wavelength range of x-rays? | .1 to .5 angstroms |
| What unit of measurement refers to the amount of ionizing radiation energy transferred by any type of radiation to any target material? | gray |
| What is the unit of exposure dose of gamma or x-rays? | coulomb per kilogram. Exposure refers to 'being subjected to radiation' |
| prefix for one million | mega |
| Why do x-rays cause ionization, but infared and microwaves don't, even though they're magnetic radiation? | They do not have enough energy to remove an electron |
| Which of the following are possible long-term somatic effects of ionizing radiation? 1. life-span shortening 2. malignant neoplasm 3. blood deficiencies | all of the above. they would not show up for several years. |
| What stage of cell division is the most sensitive? | metaphase |
| What is the unit for biological dose? | RBE: compares the test dose to a dose of 250 keV x-rays that produce the same response |
| The dose at the table during fluoro cannot exceed | 100 mGy per minute |
| 0.5 mm lead gonadal shield reduces female exposure by what percent? | 75% |
| Automatic exposure rate control is designed to compensate for: | patient position: it changes the brightness and changes the technique for these changes in anatomy to it is easy to view. |
| In the incidence of a trauma to a hip, who should manipulate the extremity, if at all? | physician: include visual of the pelvis as well |
| Use factor definition | the % of time the primary beam is directed toward a wall |
| workload definition | the number of exposures made per week |
| Occupancy factor definition | reflection of who occupies particular areas (radiation workers or non-radiation workers) |
| What are the structures in the scotty dog that represented by the: 1. body 2. ear 3. nose 4. eye 5. front feet | 1. lamina 2. superior articular process 3. transverse process 4. pedicle 5. inferior articular process |
| What does a motor do? | converts electrical energy to mechanical energy |
| Which of the following would be useful for an examination of a patient suffering from Parkinson's disease? 1. short exposure time 2. high grid ratio 3. compensating filter | only short exposure time |
| What structures are involved in a blowout fracture? | orbital floor and the inferior rectus muscle |
| When referring to a whole body dose, which of the following is not included? | hands and feet: it only refers to vital organs |
| What % of the primary beam reaches someone standing 1 meter away? | 0.1 % |
| what is one of the biggest advantages of CR? | the dynamic range, or latitude. |
| Retrograde urography introduces contrast where? | It requires ureteral catheterization so ti can be introduced into the pelvicalyceal system. |
Created by:
Gennifergreen
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