title: Sensorless reconstruction of freehand 3D ultrasound data.
abstract: Freehand 3D ultrasound can be acquired without a position sensor by finding the separations of pairs of frames using information in the images themselves. Previous work has not considered how to reconstruct entirely freehand data, which can exhibit irregularly spaced frames, non-monotonic out-of-plane probe motion and significant inplane motion. This paper presents reconstruction methods that overcome these limitations and are able to robustly reconstruct freehand data. The methods are assessed on freehand data sets and compared to reconstructions obtained using a position sensor.
authors.affiliation: University of Cambridge, Department of Engineering, Trumpington Street, Cambridge, UK.
authors.forename: R James
authors.initials: RJ
authors.lastname: Housden
authors.forename: Andrew H
authors.initials: AH
authors.lastname: Gee
authors.forename: Graham M
authors.initials: GM
authors.lastname: Treece
authors.forename: Richard W
authors.initials: RW
authors.lastname: Prager
mesh_terms: D000465:Algorithms; D019412:Anatomy, Cross-Sectional / Q000379:methods*; D016477:Artifacts; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000295:instrumentation / Q000379:methods*; D016247:Information Storage and Retrieval / Q000379:methods; D009038:Motion; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013382:Subtraction Technique; D014159:Transducers; D014463:Ultrasonography / Q000295:instrumentation / Q000379:methods*