RADD 2501 Study Stack - Radiology Physics Review

RADD 2501 Study Stack - Radiology Physics Review - A...

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A cumulative run through physics in Radiology Question Answer What are the three basic parts of the x- ray imaging system Operating Console, X-Ray Tube and High Voltage Generator A line compensator ensures that what remains constantly delivered to the imaging system Voltage What two separate circuits is the autotransformer used to supply power to High voltage and filament circuits The process of heating the x-ray tube filament so that electrons can be boiled off is know as what thermionic Emission Filaments normally operate at currents of how many amps 3 to 6 Examination tables are made of what strong, radiolucent material Carbon Fiber The x-ray tube current is controlled by what circuit Filament If an autotransformer moves from 1500 windings to 800 windings, what type of transformer is it Step-Down What are the three basic parts of the high-voltage generator High Voltage Transformer, Filament Transformer and Rectifiers Rectification is accomplished with the use of what Diodes Does half-wave rectification require half the exposure time as full-wave rectification No Is the x-ray tube a type of diode Yes A three-phase twelve-pulse power has how much voltage ripple 4% A three-phase, six-pulse power has how much voltage ripple 14% A high-frequency generator has how much voltage ripple 1% A single-phase power has how much voltage ripple 100% What are the five types of exposure Manual, Mechanical, Synchronous, AEC and Electronic
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timers Manual, Mechanical, Synchronous, AEC and Electronic Which exposure timer uses an ionization chamber to terminate exposure AEC Name the parts of the x-ray tube Supporting wires, Focusing Cup, Filament, Window, Rotating Anode, Stater Coils, Target, Roter and Glass Envelope What device is used to check exposure timers for accuracy Solid State Radiation Detector Which exposure timer is based on the frequency of AC supplied to the imaging system Synchronous Using a single-phase power, half-wave rectification results in how many x-ray pulses each second 60 Using single-phase power, full wave rectification results in how many x-ray pulses each second 120 Thermionic emission produces a cloud of electrons around the filament known as what Space Charge The main advantage of a rotating anode over a stationary anode is what Better Heat Distribution Once the filament current is high enough for thermionic emission, a small/large rise in filament current results in a small/large rise in tube current Small, Large When imaging x-table lateral spines, one should use which focal spot Large The anode serves three functions in an x-ray tube, what are they Electrical Conductor, Mechanical Support and Thermal Dissipator X-ray tubes in mammography have targets made of either what two materials Rhodium and Molybdenum The anode of a high-capacity tube rotates at how many RPM's 3400 and 10000 rpm The rotating anode is powered by what Electromagnetic Induction Motor What are the characteristics that make tungsten a good selection for target material
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This note was uploaded on 11/22/2011 for the course RADD 2501 taught by Professor Sandyeverage during the Winter '11 term at Life Chiropractic College West.

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RADD 2501 Study Stack - Radiology Physics Review - A...

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