scholarly journals Low-cost volumetric imaging with large footprint 11x11-element matrix array probe on a 128 channel ultrasound research scanner

2019 ◽  
Author(s):  
Holger Johannes Hewener ◽  
Wolfgang Bost ◽  
Daniel Speicher ◽  
Michael Ehrhardt ◽  
Marc Fournelle ◽  
...  
Keyword(s):  
Low Cost ◽  
Volumetric Imaging ◽  
Array Probe ◽  
Element Matrix ◽  
Matrix Array

scholarly journals Robotic 4D ultrasound solution for real-time visualization and teleoperation

2017 ◽  
Vol 3 (2) ◽  
pp. 559-561
Author(s):  
Mohammed Al-Badri ◽  
Svenja Ipsen ◽  
Sven Böttger ◽  
Floris Ernst
Keyword(s):  
Real Time ◽  
Ultrasound Image ◽  
Remote Visualization ◽  
Volumetric Imaging ◽  
Gigabit Ethernet ◽  
4D Ultrasound ◽  
Array Probe ◽  
The Matrix ◽  
Real Time Visualization ◽  
Matrix Array

AbstractAutomation of the image acquisition process via robotic solutions offer a large leap towards resolving ultrasound’s user-dependency. This paper, as part of a larger project aimed to develop a multipurpose 4d-ultrasonic force-sensitive robot for medical applications, focuses on achieving real-time remote visualisation for 4d ultrasound image transfer. This was possible through implementing our software modification on a GE Vivid 7 Dimension workstation, which operates a matrix array probe controlled by a KUKA LBR iiwa 7 7-DOF robotic arm. With the help of robotic positioning and the matrix array probe, fast volumetric imaging of target regions was feasible. By testing ultrasound volumes, which were roughly 880 kB in size, while using gigabit Ethernet connection, a latency of ∼57 ms was achievable for volume transfer between the ultrasound station and a remote client application, which as a result allows a frame count of 17.4 fps. Our modification thus offers for the first time real-time remote visualization, recording and control of 4d ultrasound data, which can be implemented in teleoperation.

scholarly journals Single-Shot Optical Projection tomography for high-speed volumetric imaging

2021 ◽  
Author(s):  
Connor James Darling ◽  
Samuel P.X. Davis ◽  
Sunil Kumar ◽  
Paul M.W. French ◽  
James A McGinty
Keyword(s):  
High Speed ◽  
Low Cost ◽  
Single Shot ◽  
Optical Projection Tomography ◽  
Data Set ◽  
Volumetric Imaging ◽  
Optical Projection ◽  
Volumetric Reconstruction ◽  
Projection Images

We present a single-shot adaptation of Optical Projection Tomography (OPT) for high-speed volumetric snapshot imaging of dynamic mesoscopic samples. Conventional OPT has been applied to in vivo imaging of animal models such as D. rerio but the sequential acquisition of projection images required for volumetric reconstruction typically requires samples to be immobilised during the acquisition of an OPT data set. We present a proof-of-principle system capable of single-shot imaging of a 1 mm diameter volume, demonstrating camera-limited rates of up to 62.5 volumes/second, which we have applied to 3D imaging of a freely-swimming zebrafish embryo. This is achieved by recording 8 projection views simultaneously on 4 low-cost CMOS cameras. With no stage required to rotate the sample, this single-shot OPT system can be implemented with a component cost of under 5,000GBP. The system design can be adapted to different sized fields of view and may be applied to a broad range of dynamic samples, including fluid dynamics.

Three-Dimensional Structural Characterization of Nonwoven Fabrics

2012 ◽  
Vol 18 (6) ◽  
pp. 1368-1379 ◽  
Author(s):  
Lalith B. Suragani Venu ◽  
Eunkyoung Shim ◽  
Nagendra Anantharamaiah ◽  
Behnam Pourdeyhimi
Keyword(s):  
High Speed ◽  
Imaging Technique ◽  
Low Cost ◽  
Three Dimensional ◽  
Complex Nature ◽  
Volumetric Imaging ◽  
Analysis Techniques ◽  
Nonwoven Fabrics ◽  
Nonwoven Materials

AbstractNonwoven materials are found in a gamut of critical applications. This is partly due to the fact that these structures can be produced at high speed and engineered to deliver unique functionality at low cost. The behavior of these materials is highly dependent on alignment of fibers within the structure. The ability to characterize and also to control the structure is important, but very challenging due to the complex nature of the structures. Thus, to date, focus has been placed mainly on two-dimensional analysis techniques for describing the behavior of nonwovens. This article demonstrates the utility of three-dimensional (3D) digital volumetric imaging technique for visualizing and characterizing a complex 3D class of nonwoven structures produced by hydroentanglement.

scholarly journals Large-scale calcium imaging with a head-mount axial scanning 3D fluorescence microscope

2021 ◽  
Author(s):  
Yuichiro Hayashi ◽  
Ko Kobayakawa ◽  
Reiko Kobayakawa
Keyword(s):  
Calcium Imaging ◽  
Large Scale ◽  
Low Cost ◽  
3D Structure ◽  
Three Dimensional ◽  
Brain Structures ◽  
Volumetric Imaging ◽  
Brain Functions ◽  
Local Circuits ◽  
Axial Scanning

AbstractMiniaturized fluorescence microscopes are becoming more important for deciphering the neural codes underlying various brain functions. Using gradient index (GRIN) lenses, these devices enable the recording of neuronal activity in deep brain structures. However, to minimize any damage to brain tissue and local circuits, the diameter of the GRIN lens should be 0.5–1 mm, which results in a small field of view. Considering the three-dimensional (3D) structure of neural circuits in the brain, volumetric imaging capability would increase the number of neurons imaged through the lenses. To observe 3D calcium dynamics, we developed a miniaturized microscope with an electrically tunable lens. Using this microscope, we performed 3D calcium imaging in behaving mice and were able to image approximately twice the number of cells as could be recorded using a 2D imaging technique. This simple low-cost 3D microscope will improve the efficiency of calcium imaging in behaving animals.

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