DMI 108 Exam 1 (Radiolography)
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Profession's moral responsibility and the science of appropriate conduct toward others -
CORRECT ANSWER - Ethics
Who developed current code of ethics for the United States? - CORRECT ANSWER -
American Society of Radiologic Technologists (ASRT)
ASRT Code of Ethics
Consider the following situations: - CORRECT ANSWER - You are required to perform a
procedure on a patient with AIDS.
Your friends ask you about a procedure performed on one of your former high school teachers.
A mother asks what you see on her child's x-ray image.
The device that receives the energy of the x-ray beam and forms the image of the body part -
CORRECT ANSWER - Image Receptors (IR)
List the four types of IRs used in diagnostic radiology. - CORRECT ANSWER - 1.
Cassette with film
2. Photostimulable storage phosphor image plate (PSP IP)
3. Solid-state digital detectors
4. Fluoroscopic image receptor
Analysis of Radiographic Images - CORRECT ANSWER - Assess each of the following:
,Superimposition- everything is on each other (very messy)
Adjacent structures- Things that are right beside each other
Optical density (OD)/Brightness-Computerize images
Contrast/Contrast Resolution
Spatial Resolution-detail of the image to see big/small things are
Magnification-make things larger
Shape Distortion-make things look longated or shortened
Also called automatic collimation, which is a mechanism inside the bucky tray or IR holder that
senses the dimensions of the IR and automatically collimates the beam of those dimensions -
CORRECT ANSWER - Positive Beam Limitation (PBL)
Digital imaging term equivalent to OD
Also digital radiography - CORRECT ANSWER - Brightness
The ability to visualize small structures
(previously termed recorded detail) - CORRECT ANSWER - spatial resolution
The misrepresentation of the size or shape of any anatomic structure - CORRECT
ANSWER - Distortion
, A type of distortion in which the image is larger than the actual object - CORRECT
ANSWER - magnification
Applies to digital imaging systems and is primarily controlled by bit depth, the number of
brightness values possible for each pixel - CORRECT ANSWER - Contrast resolution
Differences in adjacent densities (Low- more grey in the image/high-more white in the image)
Primarily controlled by bit depth in digital radiography
Controlled by kVp in screen-film radiography - CORRECT ANSWER - Contrast/Contrast
Resolution
What should the radiographer do if he or she notices a potentially serious or life-threatening
condition of the patient when reviewing an image that was just performed? - CORRECT
ANSWER - Notify the radiologist before the patient is released
What exposure factor controls radiographic contrast? - CORRECT ANSWER - Kilovolt
peak (kVp)
What factors controls spatial resolution? - CORRECT ANSWER - Image Plate (IP)
phosphor (digital)
Del size (digital)
Geometry
Distance
Focal spot size
Motion
Film
Intensifying screen
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Profession's moral responsibility and the science of appropriate conduct toward others -
CORRECT ANSWER - Ethics
Who developed current code of ethics for the United States? - CORRECT ANSWER -
American Society of Radiologic Technologists (ASRT)
ASRT Code of Ethics
Consider the following situations: - CORRECT ANSWER - You are required to perform a
procedure on a patient with AIDS.
Your friends ask you about a procedure performed on one of your former high school teachers.
A mother asks what you see on her child's x-ray image.
The device that receives the energy of the x-ray beam and forms the image of the body part -
CORRECT ANSWER - Image Receptors (IR)
List the four types of IRs used in diagnostic radiology. - CORRECT ANSWER - 1.
Cassette with film
2. Photostimulable storage phosphor image plate (PSP IP)
3. Solid-state digital detectors
4. Fluoroscopic image receptor
Analysis of Radiographic Images - CORRECT ANSWER - Assess each of the following:
,Superimposition- everything is on each other (very messy)
Adjacent structures- Things that are right beside each other
Optical density (OD)/Brightness-Computerize images
Contrast/Contrast Resolution
Spatial Resolution-detail of the image to see big/small things are
Magnification-make things larger
Shape Distortion-make things look longated or shortened
Also called automatic collimation, which is a mechanism inside the bucky tray or IR holder that
senses the dimensions of the IR and automatically collimates the beam of those dimensions -
CORRECT ANSWER - Positive Beam Limitation (PBL)
Digital imaging term equivalent to OD
Also digital radiography - CORRECT ANSWER - Brightness
The ability to visualize small structures
(previously termed recorded detail) - CORRECT ANSWER - spatial resolution
The misrepresentation of the size or shape of any anatomic structure - CORRECT
ANSWER - Distortion
, A type of distortion in which the image is larger than the actual object - CORRECT
ANSWER - magnification
Applies to digital imaging systems and is primarily controlled by bit depth, the number of
brightness values possible for each pixel - CORRECT ANSWER - Contrast resolution
Differences in adjacent densities (Low- more grey in the image/high-more white in the image)
Primarily controlled by bit depth in digital radiography
Controlled by kVp in screen-film radiography - CORRECT ANSWER - Contrast/Contrast
Resolution
What should the radiographer do if he or she notices a potentially serious or life-threatening
condition of the patient when reviewing an image that was just performed? - CORRECT
ANSWER - Notify the radiologist before the patient is released
What exposure factor controls radiographic contrast? - CORRECT ANSWER - Kilovolt
peak (kVp)
What factors controls spatial resolution? - CORRECT ANSWER - Image Plate (IP)
phosphor (digital)
Del size (digital)
Geometry
Distance
Focal spot size
Motion
Film
Intensifying screen
