scholarly journals Whole-body three-dimensional optoacoustic tomography system for small animals

2009 ◽  
Vol 14 (6) ◽  
pp. 064007 ◽  
Author(s):  
Hans-Peter Brecht ◽  
Richard Su ◽  
Matthew Fronheiser ◽  
Sergey A. Ermilov ◽  
Andre Conjusteau ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Whole Body ◽  
Small Animals ◽  
Optoacoustic Tomography ◽  
Tomography System

scholarly journals Three-dimensional optoacoustic tomography using a conventional ultrasound linear detector array: Whole-body tomographic system for small animals

2012 ◽  
Vol 40 (1) ◽  
pp. 013302 ◽  
Author(s):  
Jérôme Gateau ◽  
Miguel Ángel Araque Caballero ◽  
Alexander Dima ◽  
Vasilis Ntziachristos
Keyword(s):  
Three Dimensional ◽  
Detector Array ◽  
Whole Body ◽  
Small Animals ◽  
Linear Detector ◽  
Optoacoustic Tomography ◽  
Conventional Ultrasound

scholarly journals Self-Gated Respiratory Motion Rejection for Optoacoustic Tomography

2019 ◽  
Vol 9 (13) ◽  
pp. 2737 ◽  
Author(s):  
Avihai Ron ◽  
Neda Davoudi ◽  
Xosé Luís Deán-Ben ◽  
Daniel Razansky
Keyword(s):  
Data Acquisition ◽  
Respiratory Motion ◽  
Image Acquisition ◽  
Three Dimensional ◽  
Image Data ◽  
Motion Artifacts ◽  
Whole Body ◽  
Cross Sectional ◽  
Optoacoustic Tomography

Respiratory motion in living organisms is known to result in image blurring and loss of resolution, chiefly due to the lengthy acquisition times of the corresponding image acquisition methods. Optoacoustic tomography can effectively eliminate in vivo motion artifacts due to its inherent capacity for collecting image data from the entire imaged region following a single nanoseconds-duration laser pulse. However, multi-frame image analysis is often essential in applications relying on spectroscopic data acquisition or for scanning-based systems. Thereby, efficient methods to correct for image distortions due to motion are imperative. Herein, we demonstrate that efficient motion rejection in optoacoustic tomography can readily be accomplished by frame clustering during image acquisition, thus averting excessive data acquisition and post-processing. The algorithm’s efficiency for two- and three-dimensional imaging was validated with experimental whole-body mouse data acquired by spiral volumetric optoacoustic tomography (SVOT) and full-ring cross-sectional imaging scanners.

scholarly journals Initial results from a prototype whole-body photon-counting computed tomography system

2015 ◽  
Author(s):  
Z. Yu ◽  
S. Leng ◽  
S. M. Jorgensen ◽  
Z. Li ◽  
R. Gutjahr ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Photon Counting ◽  
Whole Body ◽  
Tomography System ◽  
Initial Results

scholarly journals The first observation of 4D tomography measurement of plasma structures and fluctuations

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Chanho Moon ◽  
Kotaro Yamasaki ◽  
Yoshihiko Nagashima ◽  
Shigeru Inagaki ◽  
Takeshi Ido ◽  
...  
Keyword(s):  
Steady State ◽  
Three Dimensional ◽  
Axial Direction ◽  
Axial Position ◽  
Entire Cross Section ◽  
Helicon Plasma ◽  
Emission Profile ◽  
Dimensional Measurement ◽  
Tomography System ◽  
Three Dimensional Measurement

AbstractA tomography system is installed as one of the diagnostics of new age to examine the three-dimensional characteristics of structure and dynamics including fluctuations of a linear magnetized helicon plasma. The system is composed of three sets of tomography components located at different axial positions. Each tomography component can measure the two-dimensional emission profile over the entire cross-section of plasma at different axial positions in a sufficient temporal scale to detect the fluctuations. The four-dimensional measurement including time and space successfully obtains the following three results that have never been found without three-dimensional measurement: (1) in the production phase, the plasma front propagates from the antenna toward the end plate with an ion acoustic velocity. (2) In the steady state, the plasma emission profile is inhomogeneous, and decreases along the axial direction in the presence of the azimuthal asymmetry. Furthermore, (3) in the steady state, the fluctuations should originate from a particular axial position located downward from the helicon antenna.

Three-dimensional optical tomographic brain imaging in small animals, part 1: hypercapnia

2004 ◽  
Vol 9 (5) ◽  
pp. 1046 ◽  
Author(s):  
A. Y. Bluestone ◽  
M. Stewart ◽  
J. Lasker ◽  
G. S. Abdoulaev ◽  
A. H. Hielscher
Keyword(s):  
Brain Imaging ◽  
Three Dimensional ◽  
Small Animals
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