Evaluating convolutional neural network models for automated abdominal aortic calcification scoring in chronic kidney disease patients across multiple centers - Shao, Zhenhong; Song, Mingrui; He, Beibei; Yi, Hupo; Li, Aijing; Chen, Ge; Zhang, Zhehao; Pan, Yuning (Quantitative Imaging in Medicine and Surgery; Publish Ahead of Print, 2026)