Pediatric chest HRCT using the iDose4 Hybrid Iterative Reconstruction Algorithm: Which iDose level to choose?

International Conference on Bio-Medical Instrumentation and related Engineering and Physical Sciences

物理学;医药卫生

Smarda, M.^1 ; Alexopoulou, E.^1 ; Mazioti, A.^1 ; Kordolaimi, S.^1 ; Ploussi, A.^1 ; Priftis, K.^2 ; Efstathopoulos, E.^1

2nd Department of Radiology, Medical School, National and Kapodistrian University of Athens, Rimini 1, Athens

12462, Greece^1

Department of Pediatrics, University General Hospital ATTIKON, Chaidari, Athens, Greece^2

关键词: Chronic bronchitis;    Clinical presentations;    Filtered back projection;    High-resolution computed tomography;    Iterative reconstruction algorithms;    Pediatric patients;    Similar image;    Subjective image quality;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/637/1/012024/pdf
DOI  :  10.1088/1742-6596/637/1/012024

学科分类：卫生学

来源: IOP

【 摘 要 】

Purpose of the study is to determine the appropriate iterative reconstruction (IR) algorithm level that combines image quality and diagnostic confidence, for pediatric patients undergoing high-resolution computed tomography (HRCT). During the last 2 years, a total number of 20 children up to 10 years old with a clinical presentation of chronic bronchitis underwent HRCT in our department's 64-detector row CT scanner using the iDose IR algorithm, with almost similar image settings (80kVp, 40-50 mAs). CT images were reconstructed with all iDose levels (level 1 to 7) as well as with filtered-back projection (FBP) algorithm. Subjective image quality was evaluated by 2 experienced radiologists in terms of image noise, sharpness, contrast and diagnostic acceptability using a 5-point scale (1=excellent image, 5=non-acceptable image). Artifacts existance was also pointed out. All mean scores from both radiologists corresponded to satisfactory image quality (score ≤3), even with the FBP algorithm use. Almost excellent (score