Mice are particularly popular as laboratory animals as they are relatively inexpensive to keep and are genetically very similar to humans. This together with the ease with which their genome can be manipulated has led to their increasing use as models of human disease processes. While the full range of imaging techniques can be utilised for imaging the mouse, the heart is particularly challengi...

Based on the study of limited array diffraction beams, a High Frame Rate (HFR) imaging method which uses a broadband pulsed plane wave, or array beams transmission field from a linear transducer array to illuminate the area to be imaged has been developed by Jian-yu LU. Echoes from the objects are received with the same transducer as is used in transmission. For each array beam parameter in a c...

We demonstrate a novel high-resolution portable beam profiler based on a slanted linear array of small apertures, termed a slanted hole array beam profiler (SHArP). The apertures are directly fabricated on a metal-coated CMOS imaging sensor. With a single linear scan, the aperture array can establish a virtual grid of sampling points for beam profiling. With our prototype, we demonstrate beam p...

PURPOSE Ophthalmic ultrasound imaging is currently performed with mechanically scanned single-element probes. These probes have limited capabilities overall and lack the ability to image blood flow. Linear-array systems are able to detect blood flow, but these systems exceed ophthalmic acoustic intensity safety guidelines. Our aim was to implement and evaluate a new linear-array-based technolog...

In this study, we demonstrate an acoustic system for high-resolution imaging of objects buried in soil. Our goal is to image cultural artifacts in order to assess in a rapid manner the historical significance of a potential construction site. We describe the imaging system and present preliminary images produced from data collected from a soil phantom. A mathematical model and associated comput...

INTRODUCTION: O-Space parallel imaging combines a Z2 gradient field with conventional radial k-space trajectories to perform highly-efficient parallel imaging [1]. Because the Z2 field varies as r2 = x2+y2 in the axial plane, it provides spatial encoding that is complementary to that obtained from a circumferential surface coil array. However, non-linear projection encoding invites the explorat...

Introduction: Cone beam computer tomography (CBCT) suffers inferior image quality due to scatter and other problems. We are developing a novel tetrahedron beam computed tomography (TBCT) imaging system which consists of a linear scan x-ray source and a linear x-ray detector array. TBCT system avoids the inherent problems of CBCT, thereby can significantly improve the quality of online images in...

This paper presents an initial implementation of a Virtual Ultrasound Imaging System as an interactive educational tool for students and researchers in the medical ultrasound imaging field. The system uses a cause and effect approach for understanding the results of changing transducer attributes and pulse parameters on the quality of the ultrasound image. The elements of the system include Fie...

Localization of targets imbedded in a heterogeneous background medium is a common problem in seismic, ultrasonic, and electromagnetic imaging problems. The best imaging techniques make direct use of the eigenfunctions and eigenvalues of the array response matrix, as recent work on time-reversal acoustics has shown. Of the various imaging functionals studied, one that is representative of a pref...