title: Reply.
authors.affiliation: Department of Sonography, Shengjing Hospital of China Medical University, Shenyang, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Yuan
authors.affiliation: Department of Sonography, Shengjing Hospital of China Medical University, Shenyang, China.
authors.forename: Bing
authors.initials: B
authors.lastname: Han
authors.affiliation: Department of Sonography, Shengjing Hospital of China Medical University, Shenyang, China.
authors.forename: Ailu
authors.identifier: 0000-0002-9268-6446
authors.initials: A
authors.lastname: Cai