Science Quiz / Diagnostic Imaging Exam 1

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Can you name the Diagnostic Imaging Exam 1?

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Stationary base is made of what metal?
density difference between two adjacent areas on a radiograph
xrays travel in ______ lines
degree of blackness
difference in density and mass between two adjacent anatomic structures
the kVp selector is also called ___________
a ______ transformer reduces incoming line current from amperes down to mA, called the 'low voltage' circuit
type of anode with limited ability to withstand heat generated by electrons hitting the target
number of wave cycles that pass a stationary point in a second
the _____ is always positive, the ______ is always negative
_____ wavelengths have higher frequencies
number of protons is (greater, equal, less) number of electrons
thicker parts absorb (more/less) xrays and make film (darker/lighter)
T or F xrays excite and ionize atoms
what metal is the focusing cup made of
what metal is the filament made of?
Xrays are bundles of energy called ______ or ______
xrays make radiographic film _____ (color)
the _____ transformer increases the incoming voltage from volts to kilovolts, called 'high voltage' circuit
electrons that collide with ______ produce xrays
distance between two consecutive corresponding points on a wave
(small/large) focal spots are desired because they result in very clear images
min dark room size is __ by __ feet
xrays are (high/low) frequency waves
radiographer can switch filaments by turning the ___ selector
number of xrays leaving the tube is determined by what setting?
electrons are concentrated in a small area of the target called the ____
dental units use what type of anode?
As the focal spot becomes larger, the image becomes fuzzy and less clear; this is called the _______ effect
developer pH should be
what percent of the energy produced when electrons hit the target is converted into xrays?
T or F: silver should be disposed of by washing down the drain
encases entire xray tube to prevent stray radiation escaping and protects glass envelope from damage
optimal developer temp is __ degrees F
what metal is the window made of that allows xrays to leave the tube and expose the film
______ wavelengths have more energy
type of anode developed to help dissipate the heat generated at the target; can use higher mA's with these
_______ allow flow of electrons in one direction only
site of xray generation
hihg frequency type _______ are used in clinics to allow thousands of electrical waves to flow towards the xray tube instead of standard 60 cycle US alternating current
T or F: xrays produce a visible image on the film before processing
visible difference between two adjacent radiographic densities
what is the viewing contrast desirable for soft tissues (high, low)
the primary machine setting controlling depth of penetration
part of xray machine that directs electrons towards the light
T or F: there is no limit to how small a focal spot can be
this surrounds anode/cathode, creates a vacuum so no air molecules are present
smaller filaments have (smaller/larger) focusing cups
xrays are a form of __________; which are bundles of energy that travel in waves
The _____ effect is where the intensity of the beam varies and is stronger on the cathode side due to the angle of the target
position the (thick/thin) area under the cathode side
fixer pH is

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Created Mar 1, 2012ReportNominate

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