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31 Terms

1
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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.

2
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 Who typically performs acceptance testing?

A medical physicist, vendor, and PACS administrator.

3
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 What does the Image Erasure Test check?

That no ghost images remain on PSP plates after erasure.

4
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 What tool is used for the Image Erasure Test?

A PSP plate and image viewer.

5
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 Why is the Phantom Image Test performed?

To test system performance without exposing a patient.

6
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 What tools are used for the Phantom Image Test?

A chest phantom (usually anthropomorphic) and digital imaging system.

7
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What does a Visual Check in QC look for?

Physical damage like cracks or scratches on PSP plates and equipment

8
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 What is the PACS Modality Worklist Test used for?

 To ensure accurate patient data transfer from RIS to HIS systems.

9
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 How is the Laser Printer Calibration done?

 By printing a test pattern and checking contrast, density, and base+fog levels.

10
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 What does the Linearity Test check in digital imaging?

That the system responds in a consistent and predictable way to exposure changes.

11
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 What is Routine Quality Control?

 Regular testing to make sure imaging systems stay consistent and safe over time.

12
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 What QC tests are performed daily?

 Visual inspection, PSP erasure, monitor QC, and laser printer QC.

13
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 What QC tests are done monthly?

 PSP plate erasure and inspection, phantom image test, and monitor calibration.

14
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What is done quarterly for QC?

 Laser jitter test, exposure indicator check, and repeat rate analysis.

15
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 What happens annually in QC?

 All acceptance tests are repeated and a full system review is done by a physicist.

16
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What is Exposure Indicator Calibration?

 It confirms that the exposure shown on the image matches the actual radiation dose.

17
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 What does the Dark Noise Evaluation test?

It checks for unwanted noise in blank images from unexposed PSP plates.

18
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 What is tested with Brightness Uniformity?

 That brightness is even across the entire image.

19
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 Why is Linearity & Slope testing important?

 To measure how pixel values change as radiation exposure increases.

20
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How is Laser Beam Function tested?

 Using a radiograph of a metal ruler to check for a straight scan line.

21
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 What does High Contrast Resolution measure?

 The system’s ability to show fine detail, measured in line pairs per millimeter (lp/mm).

22
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Why test Plate Erasure Thoroughness?

To ensure no residual images remain after erasure.

23
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 What phantom is used for Noise & Low Contrast Resolution?

The Leeds TO.12 phantom.

24
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 What does Distortion Assessment check for?

 Even spacing using a wire mesh grid to detect image distortion.

25
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 What is Anti-Aliasing testing used for?

 To check for moiré pattern risk using white grid caps.

26
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 How are Positioning & Collimation Errors tested?

Using 2-on-1 or 1-on-1 image tests to check proper alignment with the image receptor.

27
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 What types of QC tests do flat-panel detectors share with PSPs?

 Dark noise, linearity, image retention, detector uniformity, distortion, contrast resolution, and artifacts.

28
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How often should flat-panel QC tests be done?

 At installation, annually, or when image problems appear.

29
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What does Digital Fluoroscopy QC check?

 Image quality and patient safety for digital fluoroscopy systems.

30
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 How often should Digital Fluoroscopy QC be performed?

 Every 6 months or after major servicing.

31
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 What are some Digital Fluoroscopy QC tests?

 Spatial resolution, contrast performance, uniformity, linearity, radiation exposure, and artifact evaluation.