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• W4386916246 abstract "<h3>BACKGROUND AND PURPOSE:</h3> Radiation exposure in the CT diagnostic imaging process is a conspicuous concern in pediatric patients. This study aimed to evaluate whether 60-keV virtual monoenergetic images of the pediatric cranium in dual-layer CT can reduce the radiation dose while maintaining image quality compared with conventional images. <h3>MATERIALS AND METHODS:</h3> One hundred six unenhanced pediatric head scans acquired by dual-layer CT were retrospectively assessed. The patients were assigned to 2 groups of 53 and scanned with 250 and 180 mAs, respectively. Dose-length product values were retrieved, and noise, SNR, and contrast-to-noise ratio were calculated for each case. Two radiologists blinded to the reconstruction technique used evaluated image quality on a 5-point Likert scale. Statistical assessment was performed with ANOVA and the Wilcoxon test, adjusted for multiple comparisons. <h3>RESULTS:</h3> Mean dose-length product values were 717.47 (SD, 41.52) mGy×cm and 520.74 (SD, 42) mGy×cm for the 250- and 180-mAs groups, respectively. Irrespective of the radiation dose, noise was significantly lower, SNR and contrast-to-noise ratio were significantly higher, and subjective analysis revealed significant superiority of 60-keV virtual monoenergetic images compared with conventional images (all <i>P</i> < .001). SNR, contrast-to-noise ratio, and subjective evaluation in 60-keV virtual monoenergetic images were not significantly different between the 2 scan groups (<i>P</i> > .05). Radiation dose parameters were significantly lower in the 180-mAs group compared with the 250-mAs group (<i>P</i> < .001). <h3>CONCLUSIONS:</h3> Dual-layer CT 60-keV virtual monoenergetic images allowed a radiation dose reduction of 28% without image-quality loss in pediatric cranial CT." @default.
• W4386916246 created "2023-09-22" @default.
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• W4386916246 date "2023-09-21" @default.
• W4386916246 modified "2023-10-07" @default.
• W4386916246 title "Dual-Layer Detector Head CT to Maintain Image Quality While Reducing the Radiation Dose in Pediatric Patients" @default.
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• W4386916246 doi "https://doi.org/10.3174/ajnr.a7999" @default.
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