Blood Flow Imaging in the Neonatal Brain Using Angular Coherence Power Doppler.

ABSTRACT: Using ultrasound to image small vessels in the neonatal brain can be difficult in the presence of strong clutter from the surrounding tissue and with a neonate motion during the scan. We propose a coherence-based beamforming method, namely the short-lag angular coherence (SLAC) beamforming that suppresses incoherent noise and motion artifacts in Ultrafast data, and we demonstrate its applicability to improve detection of blood flow in the neonatal brain. Instead of estimating spatial coherence across the receive elements, SLAC utilizes the principle of acoustic reciprocity to estimate angular coherence from the beamsummed signals from different plane-wave transmits, which makes it computationally efficient and amenable to advanced beamforming techniques, such as f-k migration. The SLAC ima

SUBMITTER: Jakovljevic M 

PROVIDER: S-EPMC7864118 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature