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Films, screens and cassettes for mammography
1Department of Medical Physics & Medical Engineering, Western General Hospital, Edinburgh.
The British Journal of Radiology
|February 1, 1989
Summary
The Fuji NH film and Fuji Hi-Mammo screen offered superior mammography imaging quality at a reduced radiation dose compared to standard film-screen combinations. Other tested cassettes also demonstrated good image quality performance.
Area of Science:
- Radiology and Medical Imaging
- Diagnostic Imaging Technology
Background:
- Mammography utilizes film-screen combinations for image acquisition.
- Evaluating image quality and radiation dose is crucial for optimizing mammographic procedures.
Purpose of the Study:
- To compare the image quality and radiation dose of various film-screen combinations for mammography.
- To identify optimal film-screen systems that balance diagnostic accuracy with patient safety.
Main Methods:
- Image quality was assessed using a realistic and quantitative test object.
- Relative radiation doses were measured to achieve a standard film density (1.0).
- Performance of different mammography cassettes was also evaluated.
Main Results:
- Most film-screen combinations showed a trade-off: lower dose correlated with poorer image quality.
- The Fuji NH film with Fuji Hi-Mammo screen was an exception, providing enhanced image quality at approximately half the dose of the Kodak MinR-MinR standard.
- Several cassettes, including the Dupont Cronex and carbon-fibre fronted types, exhibited good image quality.
Conclusions:
- The Fuji NH film and Fuji Hi-Mammo screen combination represents a significant advancement, offering improved mammographic imaging at a reduced radiation dose.
- Careful selection of film-screen systems and cassettes is essential for achieving high-quality mammography while minimizing patient exposure.