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Accurate volume estimation of left atrial aneurysm plays an essential role in the early diagnosis and therapy planning. However, it is a challenging task due to huge shape variabilities of aneurysms and great appearance variations of images, which tends to be intractable for segmentation methods. In this paper, we propose a novel estimation method for direct estimation of atrial aneurysm volumes without...
For the orthogonal frequency-division multiplexing (OFDM) system, one can estimate the channel responses (CRs) based on frequency-domain (FD) pilot symbols. On the other hand, one can also estimate the time-domain (TD) channel impulse response by inserting a unit pulse ahead of each OFDM block. However, there is no analytical comparison between the CR estimation based on FD pilot symbols and TD unit...
We present the design of system-on-chip acoustic localizer chip that can be directly integrated with miniature MEMS microphone array. Continuous-time bandpass filtering and amplification at interface with microphone array enable low-power and small-form factor implementation. Time delays between acoustic signals observed over a planar geometry of four microphones are obtained by relating spatial and...
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