QAQC (MS.ELLESE PPT)

Answer: B

What is the main purpose of Automatic Exposure Control (AEC)?
A. To increase patient dose
B. To optimize radiographic image quality by controlling exposure parameters
C. To manually control the X-ray machine
D. To store images

Answer: B

What is the primary function of Automatic Exposure Termination (AET)?
A. To extend exposure time
B. To terminate exposure once the optimal dose has been achieved
C. To change kVp automatically
D. To manually stop the X-raY

Answer: A

How do AEC and AET work together?
A. AEC detects radiation, AET terminates exposure at optimal dose
B. AEC stops exposure, AET increases kVp
C. Both manually adjust the X-ray output
D. They have no relation

Answer: A

What is the role of the radiologic technologist in an AEC system?
A. Select appropriate kVp, mA, and backup time
B. Terminate exposure manually
C. Ignore exposure parameters
D. Only adjust mA

Answer: A

How does AEC detect the correct amount of radiation?
A. Using sensors that detect radiation passing through the patient and reaching the image receptor
B. Guessing based on patient size
C. By measuring time only
D. Using manual calculations

Answer: A

Why is AET important in radiography?
A. It prevents overexposure and underexposure
B. It increases radiation for better images
C. It changes patient positioning
D. It adjusts brightness

Answer: A

What is the relevance of AEC in clinical imaging?
A. Enhances image consistency and quality by adjusting exposure parameters dynamically
B. Reduces image quality
C. Increases patient dose
D. Replaces the radiographer

Answer: A

How does AET contribute to patient safety?
A. By minimizing radiation dose and ensuring optimal image quality
B. By increasing exposure time
C. By ignoring exposure
D. By manually adjusting kVp

Answer: D

Which factor affects focus on optical systems?
A. Lens quality
B. Alignment
C. Maintenance
D. All of the above

Answer: A

What is the purpose of implementing QC measures in optical systems?
A. Preventing blurring and misalignment
B. Increasing radiation
C. Changing patient positioning
D. Reducing sensor sensitivity

Answer: A

What is included in routine inspections for optical systems?
A. Lens alignment and cleanliness
B. Patient history
C. Only brightness
D. None of the above

Answer: A

Why is calibration important for optical systems?
A. Ensures accuracy of imaging
B. Adjusts exposure time
C. Reduces patient dose
D. Increases kVp automatically

Answer: A

What should be documented in optical system QC?
A. Records of inspections and maintenance
B. Patient names
C. Only exposure time
D. Room temperature

Answer: A

What is the purpose of troubleshooting optical systems?
A. Identifying and addressing issues promptly to prevent image quality degradation
B. Increasing exposure
C. Removing lenses
D. Ignoring system errors

Answer: B

What is Automatic Brightness Control (ABC) primarily used for?
A. Manual exposure adjustment
B. Maintaining consistent image brightness in fluoroscopy and some radiographic procedures
C. Storing images
D. Increasing patient dose

Answer: A

How does ABC adjust image brightness?
A. By automatically adjusting kVp and mAs based on anatomy density
B. By adjusting patient position
C. By ignoring tissue composition
D. By manually changing exposure

Answer: A

What is an advantage of ABC?
A. Minimizes exposure variability and maintains consistent image quality
B. Increases radiation dose
C. Replaces the technologist
D. Reduces patient comfort

Answer: A

How does ABC improve workflow efficiency?
A. Reduces the need for manual exposure adjustments
B. Increases repeat exposures
C. Changes the type of X-ray
D. Adjusts focus manually

Answer: A

What does filtration do in X-ray imaging?
A. Reduces X-ray quantity by preferentially absorbing low-energy X-rays
B. Increases exposure
C. Changes patient position
D. Adjusts optical focus

Answer: A

Which of the following is an example of inherent filtration?
A. Glass or metal enclosure
B. Aluminum sheets
C. Compensating filter
D. Step wedge

Answer: A

What is added filtration?
A. Aluminum sheets inserted to absorb low-energy X-rays
B. Glass enclosure
C. ABC system
D. Lens alignment

Answer: A

What is a compensating filter?
A. Material inserted between X-ray source and patient to vary beam intensity
B. Film holder
C. Optical lens
D. Step wedge

Answer: A

How is X-ray quantity measured?
A. By the intensity (number of photons) of the X-ray beam
B. By the density of the film
C. By patient height
D. By lens quality

Answer: A

How is X-ray quality measured?
A. By the penetrating ability (energy) of the X-ray beam
B. By the size of the patient
C. By exposure time alone
D. By film type only

Answer: A

What is the function of a compensating filter?
A. Shapes X-ray beam intensity to make remnant beam uniform
B. Increases radiation dose
C. Reduces ABC accuracy
D. Adjusts kVp manually

Answer: A

What is a remnant beam?
A. X-ray radiation that passes through the patient and reaches the film after interacting with tissues
B. Radiation absorbed by patient
C. Radiation blocked by filter
D. Optical light only

Answer: A

What is an aluminum step wedge used for?
A. QC and calibration of radiographic systems
B. Increasing exposure
C. Patient positioning
D. Adjusting brightness

Answer: A

What is another term for an aluminum step wedge?
A. Penetrometer
B. Compensating lens
C. ABC system
D. Film cassette

Answer: A

How does an aluminum step wedge help assess contrast resolution?
A. By providing varying levels of X-ray attenuation through aluminum steps
B. By absorbing all X-rays
C. By changing film type
D. By adjusting patient height

Answer: A

What is the composition of optical step wedges?
A. Transparent materials (glass or clear plastic), often coated with neutral density filter
B. Aluminum
C. Lead
D. kVp meter

Answer: A

What is the composition of aluminum step wedges?
A. Aluminum with a series of steps of varying thickness
B. Glass only
C. Plastic only
D. Lead

Answer: A

Why is aluminum an effective compensating filter?
A. Low atomic number, absorbs low-energy X-rays, reduces patient dose
B. High atomic number
C. Only for optical imaging
D. Changes ABC

Answer: A

What is the correct positioning of an aluminum step wedge?
A. Alongside the body part being imaged, aligned with area of interest
B. Behind the control panel
C. Above the light switch
D. Anywhere on the table

Answer: A

What is the next step after positioning an aluminum step wedge?
A. Calibration of X-ray machine (kVp and mA)
B. Patient discharge
C. Lens cleaning
D. Ignore settings

Answer: A

After X-ray exposure with a step wedge, what should be done?
A. Evaluate image to check shades of gray and exposure adequacy
B. Immediately change patient
C. Adjust optical lens
D. Replace filter

Answer: A

Why are aluminum step wedges important in chest imaging?
A. Compensate for varying tissue thicknesses in lungs and surrounding structures
B. Increase exposure
C. Reduce ABC accuracy
D. Only for extremities

Answer: A

Why are aluminum step wedges used in pelvic radiography?
A. Balance exposure over hip and pelvic region with variable densities
B. Only for head
C. Increase exposure
D. Reduce focus

Answer: A

Why are aluminum step wedges used in extremity imaging?
A. To compensate for varying bone and soft tissue thickness in arms and legs
B. Only for spine
C. Increase dose
D. Reduce ABC function

Answer: A

How does Automatic Exposure Termination help patient safety?
A. Stops radiation at the right time, preventing overexposure
B. Increases exposure
C. Adjusts optical lens
D. Changes ABC manually

Answer: A

How does Automatic Brightness System maintain image clarity?
A. Adjusts X-ray output to maintain uniform brightness across tissue densities
B. Adjusts lens only
C. Reduces patient dose by turning off X-ray
D. Increases ABC manually

Answer: A

Why is focus on optical systems critical?
A. Ensures components like lenses are properly aligned for clear, sharp imaging
B. Changes X-ray output
C. Increases patient dose
D. Adjusts step wedge

Answer: A

What role does aluminum step wedge play in QC?
A. Assesses contrast resolution, exposure settings, and system performance
B. Only stores images
C. Reduces ABC accuracy
D. Changes optical focus

Answer: B

What does AET & ABC regulate in imaging systems?
A. Exposure time only
B. Brightness and exposure
C. Lens alignment
D. Patient positioning

Answer: A

What is the purpose of focus on optical systems?
A. Ensures clarity and sharpness in imaging
B. Reduces exposure
C. Adjusts ABC automatically
D. Changes patient size

Answer: A

What is the function of an aluminum step wedge in QC?
A. Verify system operation and exposure settings
B. Replace ABC system
C. Adjust kVp manually
D. Store images only

Answer: A

How does AET prevent radiation risks to patients?
A. Ensures consistent exposure levels and prevents overexposure
B. Increases mA
C. Changes lens alignment
D. Adjusts ABC manually

Answer: A

How does ABC contribute to consistent image quality?
A. Automatically adjusts X-ray output for uniform brightness
B. Increases patient dose
C. Replaces radiographer
D. Ignores tissue density

Answer: A

Why is proper focus on optical systems essential?
A. Achieves high-resolution images and reduces diagnostic errors
B. Adjusts ABC
C. Increases patient dose
D. Changes step wedge thickness

Answer: A

How does aluminum step wedge ensure reliable imaging?
A. Verifies X-ray machine produces consistent images
B. Reduces brightness
C. Increases patient motion
D. Adjusts ABC only

Answer: A

What is the primary goal of QC and QA in radiology?
A. Maintain image quality, patient safety, and effective diagnostics
B. Increase exposure time
C. Replace radiographer
D. Reduce step wedge use

Answer: A

What is inherent filtration in X-ray tubes?
A. Filtration from glass or metal enclosure
B. Aluminum sheets
C. Compensating filter
D. Step wedge

Answer: A

What is added filtration in X-ray imaging?
A. Aluminum sheets added to absorb low-energy X-rays
B. Glass enclosure
C. Step wedge
D. ABC system

Answer: A

What is the main purpose of a compensating filter?
A. Make X-ray beam more uniform in intensity
B. Increase exposure
C. Reduce optical focus
D. Replace ABC

Answer: A

What is the remnant beam in radiography?
A. X-rays passing through the patient to reach the film
B. X-rays absorbed by patient
C. Lens reflection
D. ABC output

Answer: A

Why is aluminum used for step wedges?
A. Low atomic number, absorbs low-energy X-rays, reduces patient dose
B. High atomic number
C. For optical purposes only
D. ABC system replacement

Answer: A

How should an aluminum step wedge be positioned?
A. Alongside body part, aligned with area of interest
B. Behind control panel
C. On the floor
D. Above X-ray tube

Answer: A

What is the next step after positioning the step wedge?
A. Calibrate X-ray machine (kVp and mA)
B. Turn off ABC
C. Remove patient
D. Adjust lens only

Answer: A

What does image evaluation involve after using a step wedge?
A. Check shades of gray and adequacy of exposure
B. Turn off machine
C. Change ABC
D. Ignore density differences

Answer: A

How is the step wedge used in chest imaging?
A. Compensate for varying tissue thicknesses in lungs and surrounding structures
B. Increase dose
C. Only adjust brightness
D. Ignore lung tissue

Answer: A

Why is a step wedge used in pelvic radiography?
A. Balance exposure over hip and pelvic region with variable densities
B. Reduce exposure
C. Increase ABC output
D. Replace lens calibration

Answer: A

How does a step wedge help in extremity imaging?
A. Compensates for varying bone and soft tissue thickness in arms and legs
B. Only for head
C. Increase exposure
D. Reduce ABC`

Answer: A

What is the main purpose of QC in radiography?
A. Ensures equipment produces reliable, consistent images
B. Increase patient dose
C. Replace ABC system
D. Only adjust focus

Answer: A

What role does AET play in patient safety?
A. Stops radiation at correct exposure time
B. Increases exposure
C. Adjusts ABC manually
D. Changes lens alignment

Answer: A

How does ABC maintain image consistency?
A. Automatically adjusts X-ray output for uniform brightness
B. Increases patient dose
C. Replaces technologist
D. Ignores tissue density

Answer: A

What is the importance of proper focus on optical systems?
A. Achieves sharp imaging, high resolution, reduces errors
B. Changes ABC output
C. Increases radiation
D. Replaces step wedge

Answer: A

What is the role of aluminum step wedge in QC?
A. Assess contrast resolution, exposure settings, and system performance
B. Only stores images
C. Reduces ABC accuracy
D. Changes optical focus

Answer: A

What is the effect of low-quality lenses in optical systems?
A. Poor focus and reduced image clarity
B. Increase exposure
C. Replace ABC
D. Reduce patient safety

Answer: A

Why is alignment important in optical systems?
A. Ensures image sharpness and prevents blurring
B. Adjusts ABC output
C. Only reduces dose
D. Irrelevant for imaging

Answer: A

Why is maintenance of optical components critical?
A. Prevents dirt, dust, and misalignment affecting image quality
B. Changes ABC output
C. Increases exposure
D. Unnecessary for QC

Answer: A

What is routine inspection of optical systems?
A. Checking lens alignment and cleanliness
B. Adjusting patient dose
C. Removing ABC system
D. Ignoring image quality

Answer: A

Why is calibration performed for optical systems?
A. Ensures accurate imaging
B. Reduces patient dose
C. Changes exposure automatically
D. Removes ABC

Answer: A

What does documentation in optical system QC include?
A. Records of inspections, maintenance, and calibration
B. Only patient history
C. Only exposure time
D. ABC output

Answer: A

What is troubleshooting in optical systems for QC?
A. Identifying and addressing issues promptly to maintain image quality
B. Increasing exposure
C. Adjusting ABC only
D. Replacing lens unnecessarily

Answer: A

How does ABC adapt to patient differences?
A. Adjusts exposure parameters based on anatomy density
B. Ignores patient size
C. Only adjusts kVp
D. Changes step wedge

Answer: A

What is the benefit of ABC in workflow?
A. Reduces need for manual adjustments, improves efficiency
B. Increases exposure
C. Replaces technologist
D. Reduces focus

Answer: A

What does filtration remove from the X-ray beam?
A. Low-energy photons
B. High-energy photons
C. Lens reflection
D. ABC output

Answer: A

What does compensating filter achieve?
A. Uniform X-ray beam intensity across different tissue thickness
B. Increase exposure
C. Replace ABC
D. Reduce optical clarity

Answer: A

What is inherent filtration?
A. Filtration from tube enclosure
B. Aluminum sheets
C. Step wedge
D. ABC system

Answer: A

What is added filtration?
A. Aluminum sheets
B. Tube glass
C. Step wedge
D. ABC system

Answer: A

How is X-ray quantity measured?
A. Number of photons in the X-ray beam
B. Lens size
C. Patient height
D. Film type

Answer: A

How is X-ray quality measured?
A. Penetrating ability (energy) of X-ray beam
B. Patient weight
C. kVp only
D. ABC system

Answer: A

What is the definition of remnant beam?
A. X-rays that pass through the patient to reach the film
B. X-rays absorbed by patient
C. Optical light
D. ABC output

Answer: A

What does aluminum step wedge consist of?
A. Series of steps with varying thicknesses
B. Glass only
C. Plastic only
D. Lens material

Answer: A

Why is aluminum effective in step wedges?
A. Low Z, absorbs low-energy X-rays, reduces dose without affecting image quality
B. High Z only
C. Only for optics
D. ABC replacement

Answer: A

How is an aluminum step wedge positioned?
A. Alongside body part, aligned with area of interest
B. Anywhere on table
C. Behind control panel
D. Above tube

Answer: A

What is the next step after positioning?
A. Calibrate X-ray machine (kVp/mA)
B. Turn off ABC
C. Remove patient
D. Adjust lens

Answer: A

What is the final step in using step wedge?
A. Evaluate image for shades of gray to verify exposure
B. Ignore
C. Adjust ABC
D. Change lens

Answer: A

Why are step wedges used in chest imaging?
A. Compensate for varying tissue thicknesses
B. Increase exposure
C. Adjust ABC
D. Replace optical system

Answer: A

Why are step wedges used in pelvic imaging?
A. Balance exposure across hip/pelvic region
B. Increase exposure
C. Reduce focus
D. ABC only

Answer: A

Why are step wedges used in extremities?
A. Compensate for varying bone/soft tissue thickness
B. Only for spine
C. Increase exposure
D. Reduce ABC

Answer: A

How does AET maintain standardized imaging protocols?
A. Stops radiation at correct time
B. Increases exposure
C. Adjusts ABC manually
D. Replaces lens

Answer: A

How does ABC ensure optimal image clarity?
A. Maintains uniform image brightness across tissue densities
B. Reduces patient dose
C. Replaces step wedge
D. Adjusts kVp only

Answer: A

Why is proper focus on optical systems essential?
A. Achieves high-resolution images, reduces errors, ensures peak performance
B. Adjusts ABC only
C. Replaces step wedge
D. Reduces dose

Answer: A

What role does aluminum step wedge play in QC?
A. Assess contrast resolution and exposure settings
B. Only stores images
C. Adjusts ABC
D. Changes lens

Answer: A

What is the main goal of QC in radiology?
A. Maintain image quality, patient safety, effective diagnostics
B. Increase exposure
C. Replace ABC system
D. Ignore errors

Answer: A

What is the main goal of QA in radiology?
A. Ensure consistent high-quality images and service
B. Increase exposure
C. Replace technologist
D. Reduce step wedge use

Answer: A

What is the relevance of step wedges in QA?
A. Evaluate system performance, ensure reliable imaging
B. Adjust ABC only
C. Increase exposure
D. Replace lens

Answer: A

What does proper focus in optical systems ensure?
A. Sharp, clear images for accurate diagnosis
B. Reduces ABC output
C. Only increases exposure
D. Step wedge adjustment only

Answer: A

How do AEC, AET, and ABC improve patient safety?
A. Minimize radiation dose and ensure optimal image quality
B. Increase exposure
C. Replace lens
D. Reduce step wedge accuracy

Answer: A

What is the combined benefit of AEC, AET, ABC, optical systems, and step wedges?
A. Maintain image quality, patient safety, and effective diagnostics
B. Increase exposure
C. Replace technologist
D. Only reduce ABC output