Application Value of Adaptive Statistical Iterative Reconstruction Algorithm Combined with Low Tube Voltage in CT Diagnosis of Pediatric Paranasal Sinuses
ZHU Xu-wei
XIE Bao-jun
Abstract：Objective To explore clinical application value of computed tomography(CT) using low-tube voltage combined with adaptive statistical iterative reconstruction technique (ASIR)for pediatric sinuses.Methods A total of 160 pediatric sinuses patients were enrolled in this study and randomly divided into two groups: conventional group (with filtered back-projection reconstruction,120 kV) and low-dose group (ASIR reconstruction,100 kV).Radiation dose and image quality between two groups were compared.Two experienced radiologists independently evaluated the image quality with 5-point scores, and interrater reliability was calculated with Kappa analysis.The image noise, contrast to noise ratio (CNR), subjective evaluation and radiation dose were analyzed statistically.Results CT dose index volume (CTDIvol), dose length produnction (DLP), effective radiation dose (ED) in low-dose group were lower than those in conventional group (each P<0.01), with decrease of 50.80%, 55.80% and 52.40%, respectively.The subjective image quality scores were highly consistent (Kappa=0.834, P<0.01).The objective image, noise, CNR score were not statistically different between two groups (P<0.05).Conclusion For pediatric paranasal sinuses, ASIR combined with low-tube voltage allows a significant dose reduction.Meanwhile maintain a good diagnostic image quality and conspicuity of relevant anatomic structures.
Keywords：Computed tomographyParanasal sinusIterative reconstructionRadiation doseImage quality
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 376-379 )