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A cumulative run through physics in Radiology

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
What are the three basic parts of the x-ray imaging system   show
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A line compensator ensures that what remains constantly delivered to the imaging system   show
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show High voltage and filament circuits  
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show thermionic Emission  
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Filaments normally operate at currents of how many amps   show
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Examination tables are made of what strong, radiolucent material   show
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The x-ray tube current is controlled by what circuit   show
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If an autotransformer moves from 1500 windings to 800 windings, what type of transformer is it   show
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What are the three basic parts of the high-voltage generator   show
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show Diodes  
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show No  
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Is the x-ray tube a type of diode   show
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show 4%  
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A three-phase, six-pulse power has how much voltage ripple   show
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A high-frequency generator has how much voltage ripple   show
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A single-phase power has how much voltage ripple   show
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show Manual, Mechanical, Synchronous, AEC and Electronic  
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show AEC  
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Name the parts of the x-ray tube   show
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show Solid State Radiation Detector  
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Which exposure timer is based on the frequency of AC supplied to the imaging system   show
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Using a single-phase power, half-wave rectification results in how many x-ray pulses each second   show
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show 120  
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Thermionic emission produces a cloud of electrons around the filament known as what   show
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show Better Heat Distribution  
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show Small, Large  
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When imaging x-table lateral spines, one should use which focal spot   show
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The anode serves three functions in an x-ray tube, what are they   show
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X-ray tubes in mammography have targets made of either what two materials   show
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show 3400 and 10000 rpm  
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The rotating anode is powered by what   show
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show High atomic number, Thermal conductivity and High melting point  
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show 100  
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The protective housing may contain oil which serves two functions, what are they   show
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show Glass(Pyrex) or Metal  
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show 3410oC  
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What element is added to tungsten to increase the efficiency of the filament   show
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show Focusing Cup and Filament  
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show Useful or Primary Beam  
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show Negative  
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The x-ray tube is: a vacuum tube, a type of transistor, or a diode   show
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Target angles may vary from what to what degrees   show
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show Anode  
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Should one use the maximum technique in order to warm a cold anode   show
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show Too much technique on a cold tube(overheats) and arching effect due to vaporized tungsten  
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The line-focus principle results in which focal spot size much less than which focal spot size   show
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The smaller the anode angle, the heel effect becomes what   show
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What are the reasons that off-focus radiation is undesirable   show
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Most of the causes of x-ray tube failure are related to what   show
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show A charge particle  
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show To convert mechanical energy into electricity  
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What is the purpose of an electric motor   show
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show Selenoid  
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Placing an iron core into a current carrying coil of wire would turn the device into what   show
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show Changing  
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show The velocity of the magnetic field to the conductor, the magnetic field strength, the angle of the conductor to the magnetic field and the number of turns in the coil.  
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show Self-induction  
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A regular step-up or step-down transformer operates on what principle   show
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What are the three main causes of transformer inefficiency   show
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show AC/DC  
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show Air can cause electrons to scatter, reducing the efficiency of the beam production  
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show Over use of the filament causes vaporization of the tungsten  
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How much more area does a rotating anode provide to interact with the electron beam than a stationary anode   show
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Tube current is adjusted by controlling what circuit   show
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show Tesla  
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show Closed-Core, Autotransformer and shell-type  
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A step-up transformer results in an increase in what   show
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show Current  
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Electron target interactions result in the conversion of electron kinetic energy into what two types of energy   show
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show Voltage and Current  
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Using three-phase power is equivalent to a what percent increase in kVp over single phase equipment   show
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Using high-frequency power is equivalent to a what percent increase in kVp over single phase equipment   show
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show Removes low energy rays, and "hardens" the beam (increases quality while decreasing quantity)  
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show k-shell  
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The doubling of mAs causes a doubling of what striking the target, and consequently doubles the number of what emitted   show
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show Ion pairs  
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show CurrentxSeconds(mAs)  
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show kVp, mAs, Filtration and Distance  
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X-ray quality is also known as what   show
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show 15%  
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Two factors that affect x-ray quality are what   show
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show The Conversion of AC power into DC power  
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show The radiation that escapes from the tube housing  
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show 3. Electrons that bounce off of the focal spot and strike other areas of the target causing x-rays to be produced outside of the focal spot.  
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Thermionic Emission   show
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Half-Value Layer   show
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show A positively charged particle located inside the nucleus of an atom. It also defines the atomic number of an element.  
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Neutron   show
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Electron   show
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Atomic Number   show
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show The release of an electron by an orbiting shell  
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Rem   show
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show "Radiation absorbed dose" the absorbed amount of radiation by any object  
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Roentgen   show
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Radiation   show
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Radioactivity   show
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show Consists of two neutrons and two protons from the nucleus of an atom  
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Beta particle   show
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show A packet of electromagnetic energy  
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Properties of a photon   show
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show Reduction in intensity resulting from scattering and absorption  
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Coherent Scattering   show
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show The source of most occupational radiation exposure. An outer shell electron is struck and ejected (compton electron). The x-ray continues in a different direction with less energy, and it produces fog.  
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show An inner orbital electron is struck and ejected, ionizing the atom. The energy is completely absorbed. Responsible for characteristic diagnostic image.  
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Pair Production   show
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Photodisintegration   show
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show Any material that does not allow electron flow  
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show A material that exhibits no resistance below a critical temperature  
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Semiconductor   show
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show Any substance through which electrons flow easily  
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Resistance   show
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show A substance in which electromagnetic waves cannot travel through  
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Radiolucent   show
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show 2n^2  
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Find frequency or wavelength   show
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Inverse square law   show
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show Atom  
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What is the maximum number of electrons that may be found in the outermost shell of any atom   show
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A proton and neutron are how much larger than an electron   show
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show Wilhelm Roentgen, November 8th, 1895  
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show Radon  
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What is the largest source of man-made ionizing radiation   show
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What are the fundamental building blocks of matter   show
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show Crooks Tube  
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What are the types of energy   show
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show As Low As Reasonably Achievable  
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show Voltage and Current  
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What are three primary radiation protection devices   show
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What are the two categories of ionizing radiation   show
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show Molecule  
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What are two factors that decrease the affinity of an electron to its element? How do they effect it?   show
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At what speed does all electromagnetic radiation travel   show
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show Wave and Particle  
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Of these natures, which does it tend to behave more like   show
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show Inversely proportional  
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What is the smallest unit of negative electric charge   show
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If two negatively charged objects are brought near to each other will they be attracted or repelled   show
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show Negatively  
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show No  
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What are the three ways electrification can be created   show
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show 6.3 x 10^18  
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Do electric charges have potential energy   show
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show Voltage (Volts), Current (Amps) and Resistance (Ohms)  
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How is the volt meter connected to a circuit   show
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show In Series  
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What type of circuit does voltage remain constant   show
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What are the four factors that influence the resistance of a conductor   show
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What are three devices that help protect against or minimize exposure to radiation   show
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show X-rays are emitted from the cloud of electrons, gamma rays are emitted from the nucleus.  
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