FDI Exam 1 and 2 Questions With Correct Answers A+
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Module
FDI
Institution
FDI
FDI Exam 1 and 2 Questions With Correct
Answers A+
Which of the following is FALSE regarding x-rays? - AnswerThey can be focused by a lens.
In what year were x-rays discovered? - Answer1895
The number of waves passing a given point per given unit of time defines _______ and is
represented by t...
FDI Exam 1 and 2 Questions With Correct
Answers A+
Which of the following is FALSE regarding x-rays? - Answer✔They can be focused by a lens.
In what year were x-rays discovered? - Answer✔1895
The number of waves passing a given point per given unit of time defines _______ and is
represented by the Greek letter ______. - Answer✔Frequency, nu
what was the phosphor Roentgen used in early experiments with x-rays? - Answer✔Barium
Platinocyanide
What was the device Roentgen was using when he discovered x-rays? - Answer✔Crookes tube
Wavelength and frequency are ______ related. - Answer✔inversely
What is the definition of energy? - Answer✔The ability to do work.
X-rays travel in straight lines. T or F - Answer✔True
A ______ is a small, discrete bundle of electromagnetic energy. - Answer✔Photon
Rank these electromagnetic energies in order from most to least energetic. - Answer✔Gamma
rays, X-rays, Visible light, Microwaves
Who discovered x-rays? - Answer✔Wilhelm Conrad Roentgen
X-rays are classified as a specific type of energy termed ______ ________. -
Answer✔Electromagnetic Radiation
The x-ray beam used in diagnostic imaging can be described as being _______ -
Answer✔polyenergetic
The distance between two successive crests or troughs of a wave defines ______ and is
represented by the Greek letter _______. - Answer✔Wavelength, Lambda
Material with a ______ object density will typically produce areas of _______ optical density. -
Answer✔High, Low
What percentage of the primary x-ray beam interacting with an anatomic part actually reaches
the image receptor (the film)? - Answer✔Less than 5%
X-ray beam attenuation increases with higher-energy x-ray beams compared to lower-energy x-
ray beams. T or F - Answer✔False
How does imaging a material with a high atomic number affect x-ray beam attenuation and the
image? - Answer✔The subsequent image will be radiopaque.
The higher atomic number indicates there are more particles within each atom, increasing the
probably of interactions with x-ray photons passing through the material.
Bone attenuates more of x-ray beam than fat. T or F - Answer✔True
Which factors can attenuate the x-ray beam? - Answer✔Tissue thickness
Tissue density
Atomic number
An area of anatomy that is easily penetrated by x-ray photons producing a dark area on the film
is called _____. - Answer✔Radiolucent
Subject density and optical density are _______ related. - Answer✔Inversely
Which of the following radiographic densities is most optically dense on an image? -
Answer✔Air
Which of the following radiographic densities is the least optically dense on an image? -
Answer✔Metal
What atom is manipulated during magnetic resonance imaging (MRI) to produce an image? -
Answer✔Hydrogen
The primary purpose of MRI is to produce a study of anatomic density. T or F - Answer✔False
What is the primary drawback of utilizing computed tomography (CT) imaging in the clinical
setting? - Answer✔CT utilizes ionizing radiation to acquire an image and therefore exposes the
patient to harmful radiation.
Magnetic resonance imaging (MRI) uses x-ray photons to produce the images. T or F -
Answer✔False
What image sequence would have a TR 1200 and TE 120? - Answer✔T2
What color is cortical bone on a magnetic resonance image (MRI)? - Answer✔Black
On a computed tomography scan (CT), cortical bone appears what color? - Answer✔White
2
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