APES Beamforming Applied to Medical Ultrasound Imaging

Ann E. A. Blomberg, Iben Kraglund Holfort, Andreas Austeng, Johan-Fredrik Synnevåg, Sverre Holm, Jørgen Arendt Jensen

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Recently, adaptive beamformers have been introduced to medical ultrasound imaging. The primary focus has been on the minimum variance (MV) (or Capon) beamformer. This work investigates an alternative but closely related beamformer, the Amplitude and Phase Estimation (APES) beamformer. APES offers added robustness at the expense of a slightly lower resolution. The purpose of this study was to evaluate the performance of the APES beamformer on medical imaging data, since correct amplitude estimation often is just as important as spatial resolution. In our simulations we have used a 3.5 MHz, 96 element linear transducer array. When imaging two closely spaced point targets, APES displays nearly the same resolution as the MV, and at the same time improved amplitude control. When imaging cysts in speckle, APES offers speckle statistics similar to that of the DAS, without the need for temporal averaging.
Original languageEnglish
Title of host publication2009 IEEE International Ultrasonics Symposium (IUS)
Publication date2009
ISBN (Print)978-1-4244-4389-5
Publication statusPublished - 2009
Event2009 IEEE International Ultrasonics Symposium (IUS): Short Courses & Tutorials - Ergife Palace Hotel, Rome, Italy
Duration: 20 Sep 200923 Sep 2009


Conference2009 IEEE International Ultrasonics Symposium (IUS)
LocationErgife Palace Hotel
Internet address

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