scholarly journals Three-Dimensional Construction of Micrometer Level in Rat Stomach by Synchrotron Radiation

2020 ◽  
Author(s):  
Qiang Tao ◽  
Chen-Chen Gao ◽  
Xue-Hong Tong ◽  
Shi-Zhen Yuan ◽  
Jingdong Xu
Keyword(s):  
Synchrotron Radiation ◽  
Phase Contrast ◽  
Structural Changes ◽  
Three Dimensional ◽  
Image Resolution ◽  
Imaging Method ◽  
Contrast Imaging ◽  
X Ray ◽  
3 Dimensional ◽  
Tissue Contrast

Abstract Background: The structural changes of gastric mucosa are considered as an important window of early gastric lesions. This article shows an imaging method of the stomach that does not use imaging agents. X-ray phase-contrast images of different stages of gastric development were taken using micrometer level X-ray in-line phase-contrast imaging (XILPCI) technique on synchrotron radiation facility. The aim of the study was to demonstrate that the imaging technique is an appropriate method for micron imaging of the gastric structures.Methods: The stomachs of 4-, 6- and 12-week-old rats were removed and cleaned. XILPCI has 1000 times greater soft tissue contrast than that of X-ray traditional absorption radiography. The projection images of the rats’ stomachs were recorded by an XILPCI charge coupled device (CCD) at 9 μm image resolution.Results: The X-ray in-line phase-contrast images of the different stages of rat gastric specimens clearly showed the gastric architectures and the details of the gastro-duodenal region. 3-dimensional stomach anatomical structure images were reconstruction. Conclusion: The reconstructed gastric 3D images can clearly display the internal structure of the stomach. XILPCI may be a useful method for medical research in the future.

scholarly journals Three-dimensional Construction of Micrometer Level in Rat Stomach by Synchrotron Radiation

2020 ◽  
Author(s):  
Qiang Tao ◽  
Chen-Chen Gao ◽  
Xue-Hong Tong ◽  
Shi-Zhen Yuan ◽  
Jingdong Xu
Keyword(s):  
Synchrotron Radiation ◽  
Phase Contrast ◽  
Structural Changes ◽  
Three Dimensional ◽  
Image Resolution ◽  
Imaging Method ◽  
Contrast Imaging ◽  
X Ray ◽  
3 Dimensional ◽  
Tissue Contrast

Abstract Background: The structural changes of gastric mucosa are considered as an important window of early gastric lesions. This article shows an imaging method of the stomach that does not use imaging agents. X-ray phase-contrast images of different stages of gastric development were taken using micrometer level X-ray in-line phase-contrast imaging (XILPCI) technique on synchrotron radiation facility. The aim of the study was to demonstrate that the imaging technique is an appropriate method for micron imaging of the gastric structures.Methods: The stomachs of 4-, 6- and 12-week-old rats were removed and cleaned. XILPCI has 1000 times greater soft tissue contrast than that of X-ray traditional absorption radiography. The projection images of the rats stomachs were recorded by an XILPCI charge coupled device (CCD) at 9 μm image resolution.Results: The X-ray in-line phase-contrast images of the different stages of rats’ gastric specimens clearly showed the gastric architectures and the details of the gastro-duodenal region. 3-dimensional stomach anatomical structure images were reconstruction. Conclusion: The reconstructed gastric 3D images can clearly display the internal structure of the stomach. XILPCI may be a useful method for medical research in the future.

scholarly journals Three-dimensional Construction of Micrometer Level in Rat Stomach by Synchrotron Radiation

2020 ◽  
Author(s):  
Qiang Tao ◽  
Chen-Chen Gao ◽  
Xue-Hong Tong ◽  
Shi-Zhen Yuan ◽  
Jingdong Xu
Keyword(s):  
Synchrotron Radiation ◽  
Phase Contrast ◽  
Structural Changes ◽  
Three Dimensional ◽  
Image Resolution ◽  
Imaging Method ◽  
Contrast Imaging ◽  
X Ray ◽  
3 Dimensional ◽  
Tissue Contrast

Abstract Background: The structural changes of gastric mucosa are considered as an important window of early gastric lesions. This article shows an imaging method of the stomach that does not use imaging agents. X-ray phase-contrast images of different stages of gastric development were taken using micrometer level X-ray in-line phase-contrast imaging (XILPCI) technique on synchrotron radiation facility. The aim of the study was to demonstrate that the imaging technique is an appropriate method for micron imaging of the gastric structures.Methods: The stomachs of 4-, 6- and 12-week-old rats were removed and cleaned. XILPCI has 1000 times greater soft tissue contrast than that of X-ray traditional absorption radiography. The projection images of the rats stomachs were recorded by an XILPCI charge coupled device (CCD) at 9 μm image resolution.Results: The X-ray in-line phase-contrast images of the different stages of rats’ gastric specimens clearly showed the gastric architectures and the details of the gastro-duodenal region. 3-dimensional stomach anatomical structure images were reconstruction.Conclusion: The reconstructed gastric 3D images can clearly display the internal structure of the stomach. XILPCI may be a useful method for medical research in the future.

scholarly journals Three-dimensional construction of micrometer level in rat stomach by synchrotron radiation

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Qiang Tao ◽  
Chenchen Gao ◽  
Xuehong Tong ◽  
Shizhen Yuan ◽  
Jingdong Xu
Keyword(s):  
Synchrotron Radiation ◽  
Phase Contrast ◽  
Structural Changes ◽  
Three Dimensional ◽  
Image Resolution ◽  
Imaging Method ◽  
Contrast Imaging ◽  
X Ray ◽  
3 Dimensional ◽  
Tissue Contrast

Abstract Background The structural changes of gastric mucosa are considered as an important window of early gastric lesions. This article shows an imaging method of the stomach that does not use imaging agents. X-ray phase-contrast images of different stages of gastric development were taken using micrometer level X-ray in-line phase-contrast imaging (XILPCI) technique on synchrotron radiation facility. The aim of the study was to demonstrate that the imaging technique is an appropriate method for micron imaging of the gastric structures. Methods The stomachs of 4-, 6- and 12-week-old rats were removed and cleaned. XILPCI has 1000 times greater soft tissue contrast than that of X-ray traditional absorption radiography. The projection images of the rats stomachs were recorded by an XILPCI charge coupled device (CCD) at 9-μm image resolution. Results The X-ray in-line phase-contrast images of the different stages of rats’ gastric specimens clearly showed the gastric architectures and the details of the gastro-duodenal region. 3-dimensional (3D) stomach anatomical structure images were reconstruction. Conclusion The reconstructed gastric 3D images can clearly display the internal structure of the stomach. XILPCI may be a useful method for medical research in the future.

scholarly journals Three-dimensional Construction of Micrometer Level in Rat Stomach by Synchrotron RadiationThree-dimensional Construction of Micrometer Level in Rat Stomach by Synchrotron Radiation

2020 ◽  
Author(s):  
Qiang Tao ◽  
Chen-Chen Gao ◽  
Xue-Hong Tong ◽  
Shizhen Yuan ◽  
Tian-tian Wang ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Phase Contrast ◽  
Three Dimensional ◽  
Image Resolution ◽  
Phase Contrast Imaging ◽  
Imaging Method ◽  
Rat Stomach ◽  
Contrast Imaging ◽  
X Ray ◽  
3 Dimensional

Abstract Objectives This article shows an imaging method of the stomach that does not use imaging agents. X-ray phase-contrast images of different stages of gastric development were taken using X-ray in-line phase-contrast imaging (XILPCI). The aim of the study was to demonstrate that XILPCI is a micron imaging method for gastric structures. Methods The stomachs of 4-, 6- and 12-week-old rats were removed and cleaned. XILPCI has 1000 times greater soft tissue contrast than that of X-ray traditional absorption radiography. The projection images of the rats’ stomachs were recorded by an XILPCI charge coupled device (CCD) at 9 μm image resolution. Results The X-ray in-line phase-contrast images of the different stages of rat gastric specimens clearly showed the gastric architectures and the details of the gastroduodenal region. 3-dimensional stomach anatomical structure images were reconstruction. Conclusion The reconstructed gastric 3D images can clearly display the internal structure of the stomach. XILPCI may be a useful method for medical research in the future. Keywords: Synchrotron radiation phase-contrast imaging, 3-dimensional gastric structure images

Study of the Pump of a Mosquito

2011 ◽  
Author(s):  
Kenji Kikuchi ◽  
Osamu Mochizuki
Keyword(s):  
Oral Cavity ◽  
Phase Contrast ◽  
Three Dimensional ◽  
Blood Flow Rate ◽  
Pressure Head ◽  
Imaging Method ◽  
Contrast Imaging ◽  
Pump Frequency ◽  
Pump System ◽  
X Ray

Structures and functions of a mosquito’s pump system were investigated experimentally to clarify the mechanistic aspects of this optimized bio-pump. The three-dimensional strucure of the pump that was reconstructed by 1500 slices of the mosquito’s head was obtained using a histopathological method. The mosquito’s pump motion is predictable, and the pump volume can be estimated by the three-dimensional structural observations. The pump volume of the pumps, an oral cavity pump and pharynx pump, were estimated as being 7.92×10−4mm3, 63.3×10−4mm3 respectively. The frequency of the mosquito’s pumps was predicted to be 2.09–16.7 Hz, and was estimated using the pump volume and the volumetric blood flow rate. The motion of the mosquito’s pumps was visualized directly by an x-ray phase contrast imaging method using synchrotron radiation. It was found that the mosquito’s pumps (i.e., the oral cavity pump and the pharynx pump) worked alternately with a 4.23 Hz pump frequency. Moreover, the phase difference of each pump was almost 0.5, suggesting that the mosquito’s pumps worked in opposite phases. In addition, the mosquito’s pumps were found to work as a inline pump, which is suitable for increasing the pressure head of pump.

scholarly journals Synchrotron Radiation-based X-ray phase-contrast imaging of the aortic walls in acute aortic dissection

2020 ◽  
Vol 1 ◽  
pp. 81-91
Author(s):  
Koki Yokawa ◽  
Masato Hoshino ◽  
Naoto Yagi ◽  
Yutaka Nakashima ◽  
Kazunori Nakagawa ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Aortic Dissection ◽  
Phase Contrast ◽  
Acute Aortic Dissection ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray

ULTRAFAST X-RAY PHASE CONTRAST IMAGING OF A GASLESS REACTIVE SYSTEM USING 3RD GENERATION SYNCHROTRON RADIATION

2009 ◽  
Author(s):  
R. V. Reeves ◽  
J. D. E. White ◽  
E. M. Dufresne ◽  
K. Fezzaa ◽  
S. F. Son ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Phase Contrast ◽  
Phase Contrast Imaging ◽  
Reactive System ◽  
Contrast Imaging ◽  
X Ray

scholarly journals A feasibility study of X-ray phase-contrast mammographic tomography at the Imaging and Medical beamline of the Australian Synchrotron

2015 ◽  
Vol 22 (6) ◽  
pp. 1509-1523 ◽  
Author(s):  
Yakov I. Nesterets ◽  
Timur E. Gureyev ◽  
Sheridan C. Mayo ◽  
Andrew W. Stevenson ◽  
Darren Thompson ◽  
...  
Keyword(s):  
Phase Contrast ◽  
Three Dimensional ◽  
High Sensitivity ◽  
Contrast Imaging ◽  
Detector Resolution ◽  
X Ray ◽  
Processing Strategies ◽  
Characteristics Analysis ◽  
Tissue Characteristics ◽  
Contrast Ct

Results are presented of a recent experiment at the Imaging and Medical beamline of the Australian Synchrotron intended to contribute to the implementation of low-dose high-sensitivity three-dimensional mammographic phase-contrast imaging, initially at synchrotrons and subsequently in hospitals and medical imaging clinics. The effect of such imaging parameters as X-ray energy, source size, detector resolution, sample-to-detector distance, scanning and data processing strategies in the case of propagation-based phase-contrast computed tomography (CT) have been tested, quantified, evaluated and optimized using a plastic phantom simulating relevant breast-tissue characteristics. Analysis of the data collected using a Hamamatsu CMOS Flat Panel Sensor, with a pixel size of 100 µm, revealed the presence of propagation-based phase contrast and demonstrated significant improvement of the quality of phase-contrast CT imaging compared with conventional (absorption-based) CT, at medically acceptable radiation doses.

A non-free-space propagation x-ray phase contrast imaging method sensitive to phase effects in two directions simultaneously

2009 ◽  
Vol 94 (4) ◽  
pp. 044108 ◽  
Author(s):  
A. Olivo ◽  
S. E. Bohndiek ◽  
J. A. Griffiths ◽  
A. Konstantinidis ◽  
R. D. Speller
Keyword(s):  
Free Space ◽  
Phase Contrast ◽  
Phase Contrast Imaging ◽  
Imaging Method ◽  
Contrast Imaging ◽  
X Ray

scholarly journals Assisted walking in Malagasy dwarf chamaeleons

2010 ◽  
Vol 6 (6) ◽  
pp. 740-743 ◽  
Author(s):  
Renaud Boistel ◽  
Anthony Herrel ◽  
Gheylen Daghfous ◽  
Paul-Antoine Libourel ◽  
Elodie Boller ◽  
...  
Keyword(s):  
Inner Ear ◽  
Phase Contrast ◽  
Three Dimensional ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray ◽  
Unique Mode ◽  
Morphological Adaptations ◽  
Long Tails

Chamaeleons are well known for their unique suite of morphological adaptations. Whereas most chamaeleons are arboreal and have long tails, which are used during arboreal acrobatic manoeuvres, Malagasy dwarf chamaeleons ( Brookesia ) are small terrestrial lizards with relatively short tails. Like other chamaeleons, Brookesia have grasping feet and use these to hold on to narrow substrates. However, in contrast to other chamaeleons, Brookesia place the tail on the substrate when walking on broad substrates, thus improving stability. Using three-dimensional synchrotron X-ray phase-contrast imaging, we demonstrate a set of unique specializations in the tail associated with the use of the tail during locomotion. Additionally, our imaging demonstrates specializations of the inner ear that may allow these animals to detect small accelerations typical of their slow, terrestrial mode of locomotion. These data suggest that the evolution of a terrestrial lifestyle in Brookesia has gone hand-in-hand with the evolution of a unique mode of locomotion and a suite of morphological adaptations allowing for stable locomotion on a wide array of substrates.

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