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Ch 1-7

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
        Help!  

Question
Answer
Matter is measured in   show
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show atoms and molecules  
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The formula ___ is the basis for the theory that led to nuclear power   show
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show radiowaves, microwaves, ultraviolet, infrared, visible light, xray, gamma  
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show kinetic energy  
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show ionization  
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Ionizing radiation is capable of ___ electrons from atoms as it passes through matter   show
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Xray are forms of   show
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show diagnostic xray  
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We are exposed to 20-90 mR/yr of ionizing radiation from   show
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show mass, length, time  
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Radiation exposure is measured in   show
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Today, radiology is considered a safe occupation because of elective   show
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show as low as reasonably achievable  
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Xray filtration is used to absorb   show
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The term atom was first used by the   show
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show John Dalton  
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show atom  
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A positively charged nucleus surrounded by negatively charged electrons in well-defined orbits is the   show
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The fundamental particles of an atom are the   show
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show protons in the atom  
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show zero; neutral  
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The binding energies or energy levels of electrons are represented by their   show
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Atoms with the same number of protons as another, but a different number of neutrons is an   show
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show molecules  
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The losses or gain of one of more electrons is an   show
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The number of electrons in an electron shell is calculated with the formula   show
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A neutral atom has the same number of   show
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show K  
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show Z  
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The atomic number equals the number of   show
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The difference between xrays and gamma rays is their   show
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show particulates/particles  
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show frequency, wavelength, velocity, and amplitude  
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The smallest quantity of any type of electromagnetic radiation is a   show
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The velocity of all electromagnetic radiation is   show
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show frequency  
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The ___ of electromagnetic radiation is constant   show
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If the wavelength of a beam of electromagnetic radiation increases by a factor of 2, the frequency must decrease by   show
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The intensity of radiation decrease in _______ to the square of the distance of the object from the source   show
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The reduction of radiation intensity due to scattering and absorption is called   show
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The intensity of radiation on an object is reduced with distance because the radiation is   show
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If intensity of light from a flashlight is 4 millilumens (m/m) at 3 ft using the inverse square law, what will it be at 6 ft?   show
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The diagnostic range of xray energy is   show
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show frequency  
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show energy (kVp)  
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show radiowaves  
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Gamma rays are produced in the   show
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show shortest wavelengths  
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The smallest unit of electrical charge is the   show
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Electrification occurs only through the movement of   show
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A battery is a source of   show
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show current and a magnetic are produced  
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show sinusoidal line  
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show direct current  
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show generator  
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show V=IR  
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Electrical power is measured in   show
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show insulators  
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When a group of dipoles are aligned, they create a   show
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show 1/60 second  
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show tesla  
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show magnetic field  
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Like magnets poles _____ and unlike magnetic poles   show
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show diamagnetic  
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show iron core  
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The three main parts of an xray imaging system are the   show
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The operating console contains circuits that are   show
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show line voltage compensators  
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show autotransformer  
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show one winding  
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The ____ circuit provides electrons for the xray tube.   show
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The most accurate type of times is the   show
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The automatic exposure control (AEC) terminates the exposure when sufficient radiation reaches the   show
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show 500-1000 times  
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A diode allows electrons to flow from   show
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show positive  
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Full-wave rectified, three-phase units provide an xray beam at ___ pulses per second   show
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Voltage across the xray tube is most constant with   show
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Most mammography units operate with   show
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show 100%  
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show cost  
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show single phase  
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The most widely used support structure of the xray tube is the   show
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_____ coating within the tube can cause arcing   show
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The negative side of the xray tube is the   show
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The cathode holds the   show
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The most common cause of tube failure is   show
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show tungsten  
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show thermonic  
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The ___ motor works by electromagnetic induction to turn the anode   show
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When electron bombard the target ___ of their energy is converted to heat.   show
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show tungsten alloy  
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show focal spot  
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The size of the effective ___ decreases as the target angle decreases   show
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High capacity tube rotors revolve at   show
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show cathode  
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show cathode  
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Tube ____ can occur from long exposures   show
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The stators are ___ the glass envelope   show
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___ or ___ radiation is produced from rebounding electrons   show
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The heel is caused by the ___ of the anode   show
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The effective focal spot size is smaller than the   show
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show pitting  
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show anode  
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show heat  
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the production of heat at the anode is directly proportional to   show
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The efficiency of xray production increases as kVp   show
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show 1%  
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Electrons interaction at the inner-shell of the target atoms produce   show
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show k shell xrays  
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show 57 keV  
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Most of the xrays produced at the target are   show
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At 55kVp ___ of the xrays produced are bremsstrahlung   show
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show nucleus  
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show energy  
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The amplitude of the emission spectrum is lower with a ___ generator than with a three-phase generator   show
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A 15% increasing kVp is equivalent to doubling the   show
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