Computed Tomography Final Exam - MEDRADSC 3K03
Questions with Accurate Answers
180 Degree Algorithm correct answer Uses half rotation for sharper image quality.
360 Degree Algorithm correct answer Utilizes full rotation, broader image
representation.
3D Rendering correct answer Generates three-dimensional representations from
image data.
3rd Generation Standards correct answer Most commonly used; multislice CT
technology.
3rd Generation Standards correct answer Most commonly used; multislice CT
technology.
4DCT correct answer CT scan with breathing tracking for tumor motion
assessment.
Absorption Efficiency correct answer Percentage of photons absorbed by
detectors.
Absorption Efficiency correct answer Percentage of photons absorbed by
detectors.
Acceptance for Contrast Resolution correct answer 5mm object must have 0.5%
contrast difference.
,Acceptance Limit for Noise correct answer Standard deviation should not exceed
10 HU.
Adaptive Statistical Iterative Reconstruction correct answer Updates images
based on differences from expected data.
Advanced Tools correct answer Require powerful workstations for complex
processing.
Adverse Reactions correct answer Unexpected responses to contrast, not true
allergies.
ALARA correct answer Principle of keeping radiation exposure 'As Low As
Reasonably Achievable'.
Algorithms correct answer Step-by-step procedures for solving problems.
Aliasing Artifact correct answer Fine stripes from insufficient projection data.
Alignment Lights correct answer Visual aids for proper patient alignment.
Annotation correct answer Adding notes or labels to images for clarity.
Anode Size correct answer Larger size needed for continuous operation.
,Aperture Size correct answer Width at detector; smaller improves resolution.
Artifacts correct answer Errors in images due to patient movement or data issues.
Aseptic Technique correct answer Infection prevention method during medical
procedures.
ASIR correct answer Adaptive Statistical Iterative Reconstruction method.
Attenuation correct answer Reduction of x-ray beam intensity through tissues.
Attenuation Profile correct answer Data correlating ray sums to x-ray positions.
Automated Contrast Tracking Benefits correct answer Reduces contrast use and
enhances lesion detection.
Automatic Tube Current Modulation correct answer Technique optimizing
radiation dose during scans.
AVID correct answer Arteriovenous iodine difference for assessing contrast
distribution.
Axial Head Scan correct answer Step and shoot method for single slice imaging.
Axial Head Scan correct answer Step and shoot method for single slice imaging.
, Axial Interval correct answer Interval equals images per rotation times slice
thickness.
Axial Scan Mode correct answer Original method, one slice at a time.
Axial Scanning correct answer Method with pauses causing interscan delays.
Back Projection correct answer Converts attenuation profiles to image matrix.
Barium Sulfate correct answer Non-water soluble contrast for gastrointestinal
imaging.
Basic Rules correct answer Three rules: tests, documentation, pass/fail indication.
Basic Tools correct answer Simple tools for image analysis and measurement.
Beam Collimation correct answer Narrowing beam width for precise imaging.
Beam correct answer A fan-shaped x-ray emission pattern.
Beam geometry correct answer Arrangement of x-ray beams during imaging.
Beam Hardening correct answer Effect of varying x-ray energies on attenuation.
Binary Numbers correct answer Digitized representation of x-ray signals.
Questions with Accurate Answers
180 Degree Algorithm correct answer Uses half rotation for sharper image quality.
360 Degree Algorithm correct answer Utilizes full rotation, broader image
representation.
3D Rendering correct answer Generates three-dimensional representations from
image data.
3rd Generation Standards correct answer Most commonly used; multislice CT
technology.
3rd Generation Standards correct answer Most commonly used; multislice CT
technology.
4DCT correct answer CT scan with breathing tracking for tumor motion
assessment.
Absorption Efficiency correct answer Percentage of photons absorbed by
detectors.
Absorption Efficiency correct answer Percentage of photons absorbed by
detectors.
Acceptance for Contrast Resolution correct answer 5mm object must have 0.5%
contrast difference.
,Acceptance Limit for Noise correct answer Standard deviation should not exceed
10 HU.
Adaptive Statistical Iterative Reconstruction correct answer Updates images
based on differences from expected data.
Advanced Tools correct answer Require powerful workstations for complex
processing.
Adverse Reactions correct answer Unexpected responses to contrast, not true
allergies.
ALARA correct answer Principle of keeping radiation exposure 'As Low As
Reasonably Achievable'.
Algorithms correct answer Step-by-step procedures for solving problems.
Aliasing Artifact correct answer Fine stripes from insufficient projection data.
Alignment Lights correct answer Visual aids for proper patient alignment.
Annotation correct answer Adding notes or labels to images for clarity.
Anode Size correct answer Larger size needed for continuous operation.
,Aperture Size correct answer Width at detector; smaller improves resolution.
Artifacts correct answer Errors in images due to patient movement or data issues.
Aseptic Technique correct answer Infection prevention method during medical
procedures.
ASIR correct answer Adaptive Statistical Iterative Reconstruction method.
Attenuation correct answer Reduction of x-ray beam intensity through tissues.
Attenuation Profile correct answer Data correlating ray sums to x-ray positions.
Automated Contrast Tracking Benefits correct answer Reduces contrast use and
enhances lesion detection.
Automatic Tube Current Modulation correct answer Technique optimizing
radiation dose during scans.
AVID correct answer Arteriovenous iodine difference for assessing contrast
distribution.
Axial Head Scan correct answer Step and shoot method for single slice imaging.
Axial Head Scan correct answer Step and shoot method for single slice imaging.
, Axial Interval correct answer Interval equals images per rotation times slice
thickness.
Axial Scan Mode correct answer Original method, one slice at a time.
Axial Scanning correct answer Method with pauses causing interscan delays.
Back Projection correct answer Converts attenuation profiles to image matrix.
Barium Sulfate correct answer Non-water soluble contrast for gastrointestinal
imaging.
Basic Rules correct answer Three rules: tests, documentation, pass/fail indication.
Basic Tools correct answer Simple tools for image analysis and measurement.
Beam Collimation correct answer Narrowing beam width for precise imaging.
Beam correct answer A fan-shaped x-ray emission pattern.
Beam geometry correct answer Arrangement of x-ray beams during imaging.
Beam Hardening correct answer Effect of varying x-ray energies on attenuation.
Binary Numbers correct answer Digitized representation of x-ray signals.
