Efficient similarity-driven emission angle selection for coherent plane-wave compounding
| dc.contributor.author | Akbar, Haroon Ali | |
| dc.contributor.supervisor | Rakhmatov, Daler N. | |
| dc.date.accessioned | 2018-10-09T21:10:32Z | |
| dc.date.available | 2018-10-09T21:10:32Z | |
| dc.date.copyright | 2018 | en_US |
| dc.date.issued | 2018-10-09 | |
| dc.degree.department | Department of Electrical and Computer Engineering | en_US |
| dc.degree.level | Master of Applied Science M.A.Sc. | en_US |
| dc.description.abstract | Typical ultrafast plane-wave ultrasound imaging involves: 1) insonifying the medium with several plane-wave pulses emitted at different angles by a linear transducer array, 2) sampling the returning echo signals, after each plane-wave emission, with the same transducer array, 3) beamforming the recorded angle-specific raw data frames, and 4) compounding the beamformed data frames over all angles to form a final image. This thesis attempts to address the following question: Given a set of available plane-wave emission angles, which ones should we select for acquisition (i.e., which angle-specific raw data frames should we sample), to achieve adequate image quality at low cost associated with both sampling and computation? We propose a simple similarity-driven angle selection scheme and evaluate its several variants that rely on user-specified similarity measurement thresholds guiding the recursive angle selection process. Our results show that the proposed scheme has a low computational overhead and can yield significant savings in terms of the amount of sampled raw data. | en_US |
| dc.description.scholarlevel | Graduate | en_US |
| dc.identifier.uri | http://hdl.handle.net/1828/10141 | |
| dc.language | English | eng |
| dc.language.iso | en | en_US |
| dc.rights | Available to the World Wide Web | en_US |
| dc.subject | Similarity - Driven Angle Selection Using Beamformed Data (SASB) | en_US |
| dc.subject | Similarity - Driven Angle Selection Using Raw Data (SASR) | en_US |
| dc.subject | Ultrasound Image Quality | en_US |
| dc.subject | Delay - and - Sum (DAS) Beamforming | en_US |
| dc.subject | Coherent Plane - Wave Compounding (CPWC) | en_US |
| dc.title | Efficient similarity-driven emission angle selection for coherent plane-wave compounding | en_US |
| dc.type | Thesis | en_US |