Desvignes C, Gorincour G, Fau P, Loundou AD, Aschero A, Paris M, Bourlière B, Devred P, Petit P. [Pediatric thoracic spine radiographs: Comparison of two scintillators].
ACTA ACUST UNITED AC 2009;
90:485-91. [PMID:
19503030 DOI:
10.1016/s0221-0363(09)74008-9]
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Abstract
PURPOSE
To compare image quality and radiation exposure from pediatric thoracic spine radiographs from two systems, one using a granular structure scintillator and another using a needle structure scintillator with 40% reduction of exposure.
PATIENTS AND METHODS
Randomized prospective study of 296 patients divided into 2 groups of 5 weight categories from 4 to 60 kg. Standard technique parameters are used for granular structure scintillators with dose reduction of 40% applied for needle structure scintillators based on results from a phantom study. Image quality based on detectability of 8 anatomical structures for both types of scintillators was assessed by 6 blinded radiologists. Exposure was expressed by DLP. Results underwent statistical analysis.
RESULTS
Overall, image quality was superior with corresponding dose reduction between 33-46% according to weight with needle structure scintillators. For the 4 lower weight categories, image quality was identical.
CONCLUSION
With image quality at least equal, new needle structure scintillator units allow a dose reduction of about 40%.
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