title: Continuous wave ultrasonic Doppler tomography.
abstract: In continuous wave ultrasonic Doppler tomography (DT), the ultrasonic beam moves relative to the scanned object to acquire Doppler-shifted frequency spectra which correspond to cross-range projections of the scattering and reflecting structures within the object. The relative motion can be circular or linear. These data are then backprojected to reconstruct the two-dimensional image of the object cross section. By using coherent processing, the spatial resolution of ultrasonic DT is close to an order of magnitude better than that of traditional pulse-echo imaging at the same ultrasound frequency.
authors.affiliation: Department of Medical Physics and Bioengineering ,  University Hospitals Bristol NHS Foundation Trust ,  Bristol General Hospital, Bristol BS1 6SY ,  UK.
authors.forename: Haidong-Dong
authors.initials: HD
authors.lastname: Liang
authors.forename: Chun Sing Louis
authors.initials: CS
authors.lastname: Tsui
authors.forename: Michael
authors.initials: M
authors.lastname: Halliwell
authors.forename: Peter N T
authors.initials: PN
authors.lastname: Wells