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Core review
| Question | Answer |
|---|---|
| X-ray examinations are performed on orders issued by: A) limited X-ray machine operator B) physicians C) radiologic technologist | B) physicians |
| The absorption of xrays by matter is called A) scatter B) Fog C) attenuation | C) attenuation |
| At what kVp levels do Compton interactions occur? A) high B)low C) throughout the diagnostic kVp range | C) throughout the diagnostic kVp range |
| The unit used to indicate the total quantity of X-ray in an expose is A) mAs B) kVp C) SID | A) mAs |
| A healthcare workers single best protection against disease is A) frequent hand wash B) barrier techniques C) protective masks | A) frequent hand wash |
| When an electron is removed from an atom it is said to be A) ionized B) unstable C) radioactive | A) ionized |
| The filament of an X-ray tube is made of A) glass B) a fluorescent tube C) a coil of tungsten wire | C) a coil of tungsten wire |
| The conventional radiation unit for measuring patient dose is the A) Rem B) Rad C) Roentgen | B) Rad |
| The law of Bergonie and Tribondeau states that the following type of cells is most radio sensitive A) brain cells B) embryonic tissue C) leukocytes | B) embryonic tissue |
| What are the components of film emulsion A) gelatin and rare earth phosphorus B) gelatin and silver halide crystals C) polyester and gelatin | B) gelatin and silver halide crystals |
| Which of the following functions involves the auto transformer A) kVp selection B) mA selection C) automatic exposure control | A) kVp selection |
| What is the conventional radiation unit used to express radiation intensity in air A) Rem B) Rad C) Roentgen | C) Roentgen |
| Which portion of the cell contains the chromosomes A) plasma membrane B) Nucleus C) organelles | B) nucleus |
| How many Rad are equivalent to one (1) Gy? A) 10 B) 100 C) 1 | B) 100 |
| Which of the following terms refer to the useful X-ray beam? A) secondary radiation B) leakage radiation C) primary radiation | C) primary radiation |
| What is the maximum permissible dose for a pregnant X-ray technician A) 0.5 rem annually B) 0.05 rem monthly C) 5.0 rem annually | A) 0.5 rem annually |
| Which of the following does Not influence the amount of scatter radiation emitted by the patient A) kVp B) OID C) thickness of body part | B) OID |
| As kVp increases, which of the following statement is true A) patient dose decreases B) patient dose increases | A) patient dose decreases |
| Which of the following results from an indirect hit A) free radicals B) dna breakage C) genetic damage | A) free radicals |
| A device for removing long wavelength radiation from the primary bray beam is a A) collimator B) filter C) rectifier | B) filter |
| The omission of reasonable care or caution defines A) defamation of character B) negligence C) slander | B) negligence |
| Which of the following is the Main influence on the intensity of x radiation A) size of the film B) OID C) SID | C) SID |
| Technique charts are based upon A) patient weight and body habitus B) thickness of the body part to be radiographed C) nature of suspected pathological condition | B) thickness of the body part to be radiographed |
| If the kVp is increased and the mAs is decreased skin exposure will be A) increased B) decreased C) unchanged | B) decreased |
| The type of interaction of radiation with matter that forms characteristic radiation is called A) Compton effect B) photoelectric effect C) coherent scatter | B) photoelectric effect |
| In radiography, patient dose is usually calculated A) the the target organ B) at the skin C) by using the film badge | B) at the skin |
| What two specialized instruments are required for monitoring processor performance? A) densitometer and sensitometer B) densitometer and step wedge C) speed step and thermometer | A) densitometer and sensitometer |
| The principle underlying the creation of a space charge in the X-ray tune is A) variable resistance B) thermionic emission C) electromagnetic induction | B) thermionic emission |
| The unit commonly used to report occupational dose to radiation workers in the US is A) Rem B) Rad C) mGy | A) Rem |
| The overall darkness, or blackness within a radiographic image is referred to as A) density B) contrast C) recorded detail | A) density |
| Which of the following particles are located in an orbit around the nucleus of an atom A) protons B) electrons C) neutrons | B) electron |
| Difficult breathing is called A) tachypnea B) dyspnea C) apnea | B) dyspnea |
| The difference in density between adjacent portions of the image is called A) tissue density B) sharpness of detail C) radiographic contrast | C) radiographic contrast |
| Scatter radiation affects radiographic appearance by causing A) increased distortion B) decreased contrast C) decreased density | B) decreased contrast |
| The principal source of scatter radiation in the X-ray room is the A) X-ray tube B) collimator C) patient | C) patient |
| Marks or exposures on a radiograph that are not part of the intended image are called A) fog B) phantoms C) artifacts | C) artifacts |
| The greatest portion of the X-ray beam is made up of A) characteristic radiation B) breamsstrahlung radiaon C) heat | B) bremsstrahlung radiation |
| What are the two basic divisions of the skeletal system A) bones and soft tissue B) axial and appendicular C) functional and nonfunctional | B) axial and appendicular |
| The study of abnormal conditions of the body is termed A) anatomy B) psychology C) pathology | C) pathology |
| The EDE limit for whole-body dose of occupational radiation exposure for non pregnant workers over the age of 18 who are involved in radiation use is A) 0.5 rem per year B) 5.0 rem per year C) 5.0 mrem per year | B) 5.0 rem per year |
| Which of the following occur with high radiation doses 1) stochastic effects 2) short term somatic effects 3) nonstochastic effects | 2 & 3 only |
| A device that is placed between the patient and the IR to absorb scatter radiation is called a A) grid B) filter C) cassette | A) grid |
| What influences the absorption of radiation in body tissues 1) thickness of the body tissue 2) density of the body tissue 3) atomic number of the body tissue 4) average photon energy of the useful beam | All 4 |
| Which of the following would cause blurring of the radiographic image A) patient motion B) low mAs C) high kVp | A) patient motion |
| A reduction field size will cause the contrast to become A) lower, because kVp will decrease B) higher, because the amount of scatter radiation decreases C) the same, providing all other technical factors remain the same | B) higher, because the amount of scatter radiation decreases |
| You are a 24 year old X-ray technician who has been working for 5 years. What would your lifetime accumulated dosage be limited to? A) 25 rem B) 24 rem C) 0.5 rem | B) 24 rem |
| The interaction of X-ray photons with matter is termed A) absorption B)attenuation C) Compton interaction D) scatter radiation | C) attenuation |
| Primary beam filtration decreases the amount of radiation absorbed by A) bone marrow B) skin C) gonads D) thyroid tissue | B) skin |
| Use of a grid Bucky becomes an issue when the body part size exceeds A) 4-5 inches B) 4-5 centimeters C) 10-12 centimeters D) 10-12 inches | A) 4-5 inches |
| The cardinal principles of radiation protection require the technician to minimize the following A) distance B) kVp C) mAs | C) mAs |
| The anode heel effect can be used when doing the following exams A) tib fib B) t spine C) femur D) all the above | B) t spine |
| What term is applied to joints that are freely moveable A) synarthrosis B diarthrosis C) biarthrosis | B) diarthrosis |
| Radiographing the wrong patient or the wrong body part could legally be considered A) battery B) assault C) negligence | B) assault |
| What term is used when the patient faints A) vertigo B) apnea C) bradycardia | B) apnea |
| Total filtration of an X-ray tube capable of operating at 70 kVp and above must be at least A) 2.5 mm lead B) 2.5 mm aluminum C) 0.5 mm lead D) 0.5 mm aluminum | B) 2.5 mm aluminum |
| Any difference between a radiographic image and the actual part being imaged is considered to be A) magnification B) distortion C) elongation | C) elongation |
| One hundred (100) mSv is equal to A) 1 rem B) 100 rem C) 10 rem | A) 1 rem |
| Radiation in an X-ray room coming from anywhere other than the tube port is known as A) stray radiation B) scatter radiation C) remnant radiation | C) remnant radiation |
| The blurring along the margins of a radiographic image, caused by penumbra effects radiographic A) detail B) distortion C) density D) contrast | B) distortion |
| The conventional unit of measurement for radiation intensity in the air is the A) coulomb B) curie C) Rad D) Roentgen | D) Roentgen |
| In an X-ray control panel current flowing through the rheostat is used to control the A) kilovoltage B) milliamperage D) time | B) milliamperage |
| The most common type of X-ray beam restriction device in use today is the A) cylinder cone B) variable rectangular collimator C) positive beam limitator | B) variable rectangular collimator |
Created by:
Waltguzman
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