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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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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