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Adverse effects of stationary grids
Acta Radiologica: Diagnosis
|September 1, 1976
Summary
Stationary grids can impair medical image quality, even when grid lines are not visible. Simple tests revealed multiple factors contributing to this image degradation, highlighting the need for careful assessment.
Area of Science:
- Medical Imaging Physics
- Radiographic Quality Assessment
Background:
- Stationary grids are commonly used in radiography to reduce scattered radiation.
- Grid performance can significantly impact diagnostic image quality.
Purpose of the Study:
- To investigate the mechanisms of image impairment caused by stationary grids.
- To identify factors contributing to image quality reduction with stationary grids.
Main Methods:
- Utilized simple tests to demonstrate image impairment.
- Analyzed the relationship between grid visibility and image quality.
Main Results:
- Several factors contributing to image impairment by stationary grids were identified.
- Non-visibility of grid strips does not preclude image quality reduction.
- Low image quality can render grid lines imperceptible.
Conclusions:
- Stationary grids can degrade image quality even when their lines are not visible on the radiograph.
- The perceptibility of grid lines is not a reliable indicator of image quality when using stationary grids.