Computed Tomography For Technologists
Questions With Accurate Answers
_________ includes all data measurements obtained from the detector array
correct answer Raw data
__________ record the number of X-ray photons that pass through the patient
correct answer Detectors
_____________ quantify the degrees that a structure attenuates an X-ray beam
correct answer Houndsfield units
______________ accept processed data from the computer correct answer
Output devices
______________ are best used for imaging tissues types that vary greatly correct
answer Wide window widths
______________ feed data into the computer. correct answer Input devices
______________ means having the same number of particles in solution per unit
of liquid as blood correct answer Isotonic
_______________ are best used for tissues types with similar densities correct
answer Narrow window widths
_______________ interprets the computer program instructions and sequences
tasks. correct answer Central processing unit CPU
,_______________ is done to minimize artifacts that can occur during the back
projection process correct answer Filtering
________________ acts on the X-rays after they have emerged from the patient
and before it strikes the detector correct answer Predetector collimation/ post
patient collimators
________________ affect slice thickness by narrowing or widening the X-ray
beam correct answer Source collimators
________________ assumes that an unknown point falls along a straight line
between two known points. correct answer Linear interpolation
________________ determines the area within the gantry from which the raw
data are acquired correct answer Scan field of view (SFOV)
________________ is measured from the middle of one detector to the middle of
the neighboring detector. correct answer Detector spacing
_________________ is expressed as Rem, Roentgen, or Roentgen equivalent man
correct answer Dose equivalent
_________________ is measured by line pairs or modulation transfer function
correct answer Spatial resolution
, ____________________ are used in CT to convert information obtained from the
detector array into information suitable for image display. correct answer
Reconstruction algorithm
________________= full scan, half scan, and overscan correct answer Scan
geometry
.a common set of rules and signals that computers on the network use to
communictae correct answer Protocol
3D transparent resentation of the imaged structure correct answer Volume
rendering VR
A _____________ is created for each profile in a scan correct answer Attenuation
profile
A compete set of Ray sums is known as a correct answer View
A form of VR that is specifically designed to look inside the lumen if a structure
correct answer Endoluminal imaging
A greater osmolality than that of blood plasma correct answer Hyperosmolar or
hypertonic
A group of two or more computers linked together correct answer Network
Questions With Accurate Answers
_________ includes all data measurements obtained from the detector array
correct answer Raw data
__________ record the number of X-ray photons that pass through the patient
correct answer Detectors
_____________ quantify the degrees that a structure attenuates an X-ray beam
correct answer Houndsfield units
______________ accept processed data from the computer correct answer
Output devices
______________ are best used for imaging tissues types that vary greatly correct
answer Wide window widths
______________ feed data into the computer. correct answer Input devices
______________ means having the same number of particles in solution per unit
of liquid as blood correct answer Isotonic
_______________ are best used for tissues types with similar densities correct
answer Narrow window widths
_______________ interprets the computer program instructions and sequences
tasks. correct answer Central processing unit CPU
,_______________ is done to minimize artifacts that can occur during the back
projection process correct answer Filtering
________________ acts on the X-rays after they have emerged from the patient
and before it strikes the detector correct answer Predetector collimation/ post
patient collimators
________________ affect slice thickness by narrowing or widening the X-ray
beam correct answer Source collimators
________________ assumes that an unknown point falls along a straight line
between two known points. correct answer Linear interpolation
________________ determines the area within the gantry from which the raw
data are acquired correct answer Scan field of view (SFOV)
________________ is measured from the middle of one detector to the middle of
the neighboring detector. correct answer Detector spacing
_________________ is expressed as Rem, Roentgen, or Roentgen equivalent man
correct answer Dose equivalent
_________________ is measured by line pairs or modulation transfer function
correct answer Spatial resolution
, ____________________ are used in CT to convert information obtained from the
detector array into information suitable for image display. correct answer
Reconstruction algorithm
________________= full scan, half scan, and overscan correct answer Scan
geometry
.a common set of rules and signals that computers on the network use to
communictae correct answer Protocol
3D transparent resentation of the imaged structure correct answer Volume
rendering VR
A _____________ is created for each profile in a scan correct answer Attenuation
profile
A compete set of Ray sums is known as a correct answer View
A form of VR that is specifically designed to look inside the lumen if a structure
correct answer Endoluminal imaging
A greater osmolality than that of blood plasma correct answer Hyperosmolar or
hypertonic
A group of two or more computers linked together correct answer Network
