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What is the purpose of acceptance testing in radiography?
To make sure new equipment works properly and safely before it is used clinically.
Who typically performs acceptance testing?
A medical physicist, vendor, and PACS administrator.
What does the Image Erasure Test check?
That no ghost images remain on PSP plates after erasure.
What tool is used for the Image Erasure Test?
A PSP plate and image viewer.
Why is the Phantom Image Test performed?
To test system performance without exposing a patient.
What tools are used for the Phantom Image Test?
A chest phantom (usually anthropomorphic) and digital imaging system.
What does a Visual Check in QC look for?
Physical damage like cracks or scratches on PSP plates and equipment
What is the PACS Modality Worklist Test used for?
To ensure accurate patient data transfer from RIS to HIS systems.
How is the Laser Printer Calibration done?
By printing a test pattern and checking contrast, density, and base+fog levels.
What does the Linearity Test check in digital imaging?
That the system responds in a consistent and predictable way to exposure changes.
What is Routine Quality Control?
Regular testing to make sure imaging systems stay consistent and safe over time.
What QC tests are performed daily?
Visual inspection, PSP erasure, monitor QC, and laser printer QC.
What QC tests are done monthly?
PSP plate erasure and inspection, phantom image test, and monitor calibration.
What is done quarterly for QC?
Laser jitter test, exposure indicator check, and repeat rate analysis.
What happens annually in QC?
All acceptance tests are repeated and a full system review is done by a physicist.
What is Exposure Indicator Calibration?
It confirms that the exposure shown on the image matches the actual radiation dose.
What does the Dark Noise Evaluation test?
It checks for unwanted noise in blank images from unexposed PSP plates.
What is tested with Brightness Uniformity?
That brightness is even across the entire image.
Why is Linearity & Slope testing important?
To measure how pixel values change as radiation exposure increases.
How is Laser Beam Function tested?
Using a radiograph of a metal ruler to check for a straight scan line.
What does High Contrast Resolution measure?
The system’s ability to show fine detail, measured in line pairs per millimeter (lp/mm).
Why test Plate Erasure Thoroughness?
To ensure no residual images remain after erasure.
What phantom is used for Noise & Low Contrast Resolution?
The Leeds TO.12 phantom.
What does Distortion Assessment check for?
Even spacing using a wire mesh grid to detect image distortion.
What is Anti-Aliasing testing used for?
To check for moiré pattern risk using white grid caps.
How are Positioning & Collimation Errors tested?
Using 2-on-1 or 1-on-1 image tests to check proper alignment with the image receptor.
What types of QC tests do flat-panel detectors share with PSPs?
Dark noise, linearity, image retention, detector uniformity, distortion, contrast resolution, and artifacts.
How often should flat-panel QC tests be done?
At installation, annually, or when image problems appear.
What does Digital Fluoroscopy QC check?
Image quality and patient safety for digital fluoroscopy systems.
How often should Digital Fluoroscopy QC be performed?
Every 6 months or after major servicing.
What are some Digital Fluoroscopy QC tests?
Spatial resolution, contrast performance, uniformity, linearity, radiation exposure, and artifact evaluation.