title: Code compression after demodulation in ultrasound flow imaging systems.
abstract: In this paper, an ultrasound flow imaging system with single-transmit coded excitation is studied. With the oversampled code sequence modulated by base code, code compression before or after demodulation is demonstrated to be equivalent. A coded excitation flow imaging system with relatively low analog-to-digital (AD) sampling rate is proposed. The performance of the system is evaluated by simulation results.
authors.affiliation: Biomedical Engineering Department of Tsinghua University, Beijing, China (phone: 8610-62781539; fax: 8610-62785472; e-mail: hengzhao00@mails.tsinghua.edu.cn).
authors.forename: Heng
authors.initials: H
authors.lastname: Zhao
authors.forename: Kai
authors.initials: K
authors.lastname: Liu
authors.forename: Shangkai
authors.initials: S
authors.lastname: Gao