MEAGHAN PIRETTI’S STUDY GUIDE: IMAGE PRODUCTION
QUESTIONS AND ANSWERS 2026/2027 | A+ GRADE EXAM ASSURED
SUCCESS
What is displayed on the x-axis of a histogram?
Receptor exposure
What is displayed on the y-axis of a histogram?
Number of pixels for each exposure
Describe histogram analysis value of interest (VOI)
Computer software that determines the range if histogram values
Define rescaling
Software ability to produce images with consistent brightness and
contrast
Define look-up-table (LUT)
Histogram of brightness level values from image acquisition that can
be used to correct or enhance luminance values
,Is the LUT a mathematical formula?
Yes
Does correct collimation have any effect of histogram analysis?
Yes
Is it important to process the image under the correct anatomy
selection on the control panel?
Yes, it will determine what histogram is used
Annotation
Labeling medical images
Cropping/masking
Removing unwanted parts of an image or focusing on a specific
region
Stitching
Use of software to connect multiple images into one image
,Region of interest (ROI)
Identifying a specific anatomic area on a digital image
Flat fielding
Preprocessing calibration techniques used to make the response of
the IR uniform
Edge enhancement
Improves visibility of small, high contrast areas
Smoothing
Also known as low-pass filtering, the result of averaging each pixel's
frequency with surrounding pixel values to remove high-frequency
noise
What does PACS stand for?
Picture archive and communication system
Define DICOM
Digital imaging and computers in medicine; a standard protocol used
for blending PACS and various imaging modalities
, Define EMR
Electronic medical record; digital version of a paper chart used by
healthcare providers to store and access patient medical information
Define EHR
Electronic health record; designed to be used across multiple
healthcare organizations to track a patient's overall health history
How are an EMR and EHR different?
An EHR is a more comprehensive version of an EMR
What does HIS stand for?
Hospital information system; blends patient care information,
reporting, and billing
What does RIS stand for?
Radiology information system; used for ordering procedures and
reporting results
QUESTIONS AND ANSWERS 2026/2027 | A+ GRADE EXAM ASSURED
SUCCESS
What is displayed on the x-axis of a histogram?
Receptor exposure
What is displayed on the y-axis of a histogram?
Number of pixels for each exposure
Describe histogram analysis value of interest (VOI)
Computer software that determines the range if histogram values
Define rescaling
Software ability to produce images with consistent brightness and
contrast
Define look-up-table (LUT)
Histogram of brightness level values from image acquisition that can
be used to correct or enhance luminance values
,Is the LUT a mathematical formula?
Yes
Does correct collimation have any effect of histogram analysis?
Yes
Is it important to process the image under the correct anatomy
selection on the control panel?
Yes, it will determine what histogram is used
Annotation
Labeling medical images
Cropping/masking
Removing unwanted parts of an image or focusing on a specific
region
Stitching
Use of software to connect multiple images into one image
,Region of interest (ROI)
Identifying a specific anatomic area on a digital image
Flat fielding
Preprocessing calibration techniques used to make the response of
the IR uniform
Edge enhancement
Improves visibility of small, high contrast areas
Smoothing
Also known as low-pass filtering, the result of averaging each pixel's
frequency with surrounding pixel values to remove high-frequency
noise
What does PACS stand for?
Picture archive and communication system
Define DICOM
Digital imaging and computers in medicine; a standard protocol used
for blending PACS and various imaging modalities
, Define EMR
Electronic medical record; digital version of a paper chart used by
healthcare providers to store and access patient medical information
Define EHR
Electronic health record; designed to be used across multiple
healthcare organizations to track a patient's overall health history
How are an EMR and EHR different?
An EHR is a more comprehensive version of an EMR
What does HIS stand for?
Hospital information system; blends patient care information,
reporting, and billing
What does RIS stand for?
Radiology information system; used for ordering procedures and
reporting results
