title: Erratum to: A method of extending the depth of focus of the high-resolution X-ray imaging system employing optical lens and scintillator: a phantom study.
authors.affiliation: School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210009, China.
authors.forename: Guang
authors.initials: G
authors.lastname: Li
authors.affiliation: School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210009, China.
authors.forename: Shouhua
authors.initials: S
authors.lastname: Luo
authors.affiliation: Department of Bioengineering, School of Engineering, Santa Clara University, Santa Clara, CA, 95053, USA.
authors.forename: Yuling
authors.initials: Y
authors.lastname: Yan
authors.affiliation: School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210009, China. guning@seu.edu.cn.
authors.forename: Ning
authors.initials: N
authors.lastname: Gu