Similar to pulse-echo ultrasound, optoacoustic imaging encodes the location of optical absorbers by the time-of-flight of ultrasound waves. Yet, signal generation mechanisms are fundamentally different for the two modalities, leading to significant distinction between the optimum image formation strategies. While interference of back-scattered ultrasound waves with random phases causes speckle ...

Medical ultrasound (US) images are characterized by inherent noise perturbations which introduce uncertainty in their interpretation even by experienced radiologists. In this paper we propose a novel deformable model for medical US image segmentation, which incorporates a combination of domain and boundary integrals for the alleviation of the noise effects. It can be applied as a diagnostic aid...

Title: Atlas-augmented ultrasound guidance of lumbar epidural needle insertions Primary Author: Abtin Rasoulian MSs. University of British Columbia Additional Author(s): Allaudin Kamani MD British Columbia Women’s Hospital and Health Centre Purang Abolmaesumi PhD University of British Columbia Robert Rohling PhD University of British Columbia Background: There is increasing interest in ultrasou...

‘Speckle’ noise refers to the granular patterns that occur in ultrasound images due to wave interference. Speckle removal can greatly improve the visibility of the underlying structures in an ultrasound image and enhance subsequent post-processing. We present a novel framework for speckle removal based on low-rank non-local filtering. Our approach works by first computing a guidance image that ...