Quality Control Flashcards
Which of the following best describes geometric accuracy in medical imaging?
A) The ability of an image to accurately represent object lengths and dimensions
B) The sharpness of image details and edges
C) The level of noise present in the image
D) The contrast between different tissues in the image
A) The ability of an image to accurately represent object lengths and dimensions
Which of the following best describes high contrast spatial resolution in medical imaging?
A) The ability to differentiate between tissues with similar densities
B) The ability to resolve small objects with high detail
C) The ability to reduce image noise and artifacts
D) The ability to accurately represent object dimensions
B) The ability to resolve small objects with high detail
Which of the following best describes slice thickness accuracy in medical imaging?
A) The ability to differentiate between tissues with similar densities
B) The ability to achieve the prescribed slice thickness accurately
C) The ability to enhance image contrast and sharpness
D) The ability to reduce motion artifacts in the image
B) The ability to achieve the prescribed slice thickness accurately
Which of the following best describes slice position accuracy in medical imaging?
A) The ability to achieve the prescribed slice thickness accurately
B) The ability to position slices at the exact prescribed locations
C) The ability to enhance image contrast and resolution
D) The ability to reduce noise and artifacts in the image
B) The ability to position slices at the exact prescribed locations
Which of the following best describes image intensity uniformity in medical imaging?
A) The ability to achieve consistent image intensity over a large water-only region
B) The ability to differentiate between tissues with similar densities
C) The ability to resolve small objects with high detail
D) The ability to accurately position slices at prescribed locations
A) The ability to achieve consistent image intensity over a large water-only region
Which of the following best describes percent signal ghosting in medical imaging?
A) The ability to achieve uniform image intensity across a large region
B) The appearance of a faint, displaced copy of the image due to signal instability
C) The ability to resolve small objects with high detail
D) The accuracy of slice thickness in image acquisition
B) The appearance of a faint, displaced copy of the image due to signal instability
Which of the following best describes low contrast object detectability in medical imaging?
A) The ability to resolve small objects with high detail
B) The ability to accurately position slices at prescribed locations
C) The ability to distinguish objects with low contrast in an image
D) The ability to reduce noise and artifacts in the image
C) The ability to distinguish objects with low contrast in an image
What is the primary purpose of the SMPTE test pattern in medical imaging?
A) To evaluate the accuracy of slice positioning
B) To assess the quality of video displays and hard copy image recorders
C) To measure the scanner’s ability to detect low-contrast objects
D) To test the magnetic field strength of the MRI scanner
B) To assess the quality of video displays and hard copy image recorders
Which organization developed the SMPTE test pattern for quality control in imaging?
A) American College of Radiology (ACR)
B) Food and Drug Administration (FDA)
C) Society of Motion Picture and Television Engineers (SMPTE)
D) National Electrical Manufacturers Association (NEMA)
C) Society of Motion Picture and Television Engineers (SMPTE)
How often should MRI quality control (QC) measurements be performed?
A) Daily
B) Weekly
C) Monthly
D) Annually
B) Weekly
What is the primary purpose of preventive maintenance in MRI quality control?
A) To ensure proper patient positioning
B) To service the MRI system monthly and prevent equipment failures
C) To improve image contrast resolution
D) To enhance signal intensity in images
B) To service the MRI system monthly and prevent equipment failures
Why is it important to recognize and correct artifacts in MRI quality control?
A) To increase scan speed
B) To ensure image accuracy and diagnostic reliability
C) To enhance patient comfort during scanning
D) To reduce scan costs
B) To ensure image accuracy and diagnostic reliability
What is the primary purpose of the American College of Radiology (ACR) accreditation for MRI facilities?
A) To regulate MRI technician salaries
B) To ensure consistent image quality and patient safety in MRI scans
C) To develop new MRI scanning techniques
D) To standardize MRI contrast agents
B) To ensure consistent image quality and patient safety in MRI scans
Which of the following is a key component of the ACR MRI accreditation process?
A) Evaluating the facility’s cafeteria services
B) Assessing image quality, safety protocols, and equipment performance
C) Reducing the cost of MRI scans
D) Limiting the number of MRI scans performed per day
B) Assessing image quality, safety protocols, and equipment performance
How often must MRI facilities undergo ACR accreditation renewal?
A) Every year
B) Every 3 years
C) Every 5 years
D) Only once after initial approval
B) Every 3 years
Which phantom is used for MRI quality control testing as per ACR guidelines?
A) Water-filled phantom
B) ACR MRI phantom
C) Copper coil phantom
D) Gradient field phantom
B) ACR MRI phantom
Why does the ACR require MRI facilities to perform regular quality control (QC) tests?
A) To ensure MRI scans meet diagnostic standards and identify equipment issues early
B) To increase the number of MRI scans performed daily
C) To compare MRI image quality across different hospitals
D) To allow facilities to charge higher fees for MRI services
A) To ensure MRI scans meet diagnostic standards and identify equipment issues early
