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Storage Phosphors for Medical Imaging.
Paul Leblans1, Dirk Vandenbroucke2, Peter Willems3
1Agfa HealthCare NV, Septestraat 27, B-2640 Mortsel, Belgium. paul.leblans@agfa.com.
Materials (Basel, Switzerland)
|September 8, 2017
Summary
Computed radiography (CR) utilizes storage phosphor plates for digital imaging. The crystal morphology significantly impacts image quality, explaining why certain phosphors succeed commercially.
Area of Science:
- Medical Imaging Physics
- Materials Science in Radiology
- Digital Radiography Technology
Background:
- Computed radiography (CR) employs storage phosphor imaging plates to capture X-ray energy.
- This stored energy is released as blue photons during optical stimulation for image readout.
- Over 35 years, various storage phosphors have been explored for CR applications.
Purpose of the Study:
- To explain the commercial success of specific storage phosphor materials.
- To discuss the photostimulated luminescence mechanisms of commercial phosphors (BaFBr:Eu2+, CsBr:Eu2+).
- To elucidate the relationship between physical plate characteristics and resultant image quality.
Main Methods:
- Review of historical storage phosphor development in CR.
- Analysis of photostimulated luminescence mechanisms.
- Correlation of phosphor crystal morphology with CR imaging plate performance.
Main Results:
- Identified factors contributing to the commercial viability of certain storage phosphors.
- Detailed the photostimulated luminescence processes for BaFBr:Eu2+ and CsBr:Eu2+.
- Demonstrated a significant impact of phosphor crystal morphology on CR imaging plate performance and image quality.
Conclusions:
- The commercial success of CR storage phosphors depends on specific material properties and performance.
- Understanding luminescence mechanisms and physical characteristics is crucial for optimizing CR technology.
- Phosphor crystal morphology is a critical determinant of CR imaging plate efficacy.
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