Indocyanine green–assisted dental imaging in the first and second near‐infrared windows as compared with X‐ray imaging

2019 ◽  
Vol 1448 (1) ◽  
pp. 42-51 ◽  
Author(s):  
Zhongqiang Li ◽  
Waleed Zaid ◽  
Thomas Hartzler ◽  
Alexandra Ramos ◽  
Michelle L. Osborn ◽  
...  
Keyword(s):  
Indocyanine Green ◽  
Near Infrared ◽  
X Ray ◽  
Dental Imaging ◽  
X Ray Imaging

Optimal imaging windows of indocyanine green‐assisted near‐infrared dental imaging with rat model and its comparison to X‐ray imaging

2020 ◽  
Vol 13 (6) ◽  
Author(s):  
Zhongqiang Li ◽  
Thomas Hartzler ◽  
Alexandra Ramos ◽  
Michelle L. Osborn ◽  
Yanping Li ◽  
...  
Keyword(s):  
Indocyanine Green ◽  
Rat Model ◽  
Near Infrared ◽  
X Ray ◽  
Dental Imaging ◽  
X Ray Imaging ◽  
Optimal Imaging

scholarly journals Long-term NIR variability in the UKIDSS Ultra Deep Survey: a new probe of AGN activity at high redshift

2020 ◽  
Vol 493 (2) ◽  
pp. 3026-3035 ◽  
Author(s):  
E Elmer ◽  
O Almaini ◽  
M Merrifield ◽  
W G Hartley ◽  
D T Maltby ◽  
...  
Keyword(s):  
Near Infrared ◽  
High Redshift ◽  
Galactic Nuclei ◽  
Host Galaxies ◽  
X Ray ◽  
X Ray Imaging ◽  
Sky Survey ◽  
Deep Survey ◽  
Stellar Masses

ABSTRACT We present the first attempt to select active galactic nuclei (AGN) using long-term near-infrared (NIR) variability. By analysing the K-band light curves of all the galaxies in the UKIRT Infrared Deep Sky Survey (UKIDSS) Ultra Deep Survey, the deepest NIR survey over ∼1 deg2, we have isolated 393 variable AGN candidates. A comparison to other selection techniques shows that only half of the variable sources are also selected using either deep Chandra X-ray imaging or Infrared Array Camera (IRAC) colour selection, suggesting that using NIR variability can locate AGN that are missed by more standard selection techniques. In particular, we find that long-term NIR variability identifies AGN at low luminosities and in host galaxies with low stellar masses, many of which appear relatively X-ray quiet.

Endoscopic near-infrared dental imaging with indocyanine green: a pilot study

2018 ◽  
Vol 1421 (1) ◽  
pp. 88-96 ◽  
Author(s):  
Zhongqiang Li ◽  
Shaomian Yao ◽  
Jian Xu ◽  
Ye Wu ◽  
Chunhong Li ◽  
...  
Keyword(s):  
Pilot Study ◽  
Indocyanine Green ◽  
Near Infrared ◽  
Dental Imaging

scholarly journals Characterization of materials for optimal near-infrared and x-ray imaging of the breast

2012 ◽  
Vol 3 (9) ◽  
pp. 2078 ◽  
Author(s):  
Kelly Michaelsen ◽  
Venkataramanan Krishnaswamy ◽  
Brian W. Pogue ◽  
Ken Brooks ◽  
Ken Defreitas ◽  
...  
Keyword(s):  
Near Infrared ◽  
X Ray ◽  
X Ray Imaging ◽  
Characterization Of Materials

scholarly journals Mapping gadolinium contrast in a complex ionic and photosynthesis environment of pineapple by near-infrared and X-ray imaging

2020 ◽  
Vol 53 (7) ◽  
pp. 505-511
Author(s):  
Subhendra Sarkar ◽  
Zoya Vinokur ◽  
Chen Xu ◽  
Tetiana Soloviova ◽  
Amina Shahbaz ◽  
...  
Keyword(s):  
Near Infrared ◽  
Gadolinium Contrast ◽  
X Ray ◽  
X Ray Imaging

Defects of Platelet Function Recognized by X-Ray Imaging and Scanning Electron Microscopy

1985 ◽  
Vol 43 ◽  
pp. 610-613
Author(s):  
M.G. Baldini ◽  
S. Morinaga ◽  
D. Minasian ◽  
R. Feder ◽  
D. Sayre ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Cell Biology ◽  
Imaging Technique ◽  
Human Platelets ◽  
X Rays ◽  
X Ray ◽  
X Ray Imaging ◽  
Complex Phenomena ◽  
Scanning Electron

Contact X-ray imaging is presently developing as an important imaging technique in cell biology. Our recent studies on human platelets have demonstrated that the cytoskeleton of these cells contains photondense structures which can preferentially be imaged by soft X-ray imaging. Our present research has dealt with platelet activation, i.e., the complex phenomena which precede platelet appregation and are associated with profound changes in platelet cytoskeleton. Human platelets suspended in plasma were used. Whole cell mounts were fixed and dehydrated, then exposed to a stationary source of soft X-rays as previously described. Developed replicas and respective grids were studied by scanning electron microscopy (SEM).

Designing high-resolution slow scan CCD-based TEM camera systems

1992 ◽  
Vol 50 (2) ◽  
pp. 946-947
Author(s):  
James F. Mancuso ◽  
William B. Maxwell ◽  
Russell E. Camp ◽  
Mark H. Ellisman
Keyword(s):  
Fiber Optics ◽  
Ccd Camera ◽  
High Energy ◽  
Phosphor Layer ◽  
X Ray ◽  
Light Production ◽  
Camera Systems ◽  
X Ray Imaging ◽  
Electron Image ◽  
Scintillating Fiber

The imaging requirements for 1000 line CCD camera systems include resolution, sensitivity, and field of view. In electronic camera systems these characteristics are determined primarily by the performance of the electro-optic interface. This component converts the electron image into a light image which is ultimately received by a camera sensor.Light production in the interface occurs when high energy electrons strike a phosphor or scintillator. Resolution is limited by electron scattering and absorption. For a constant resolution, more energy deposition occurs in denser phosphors (Figure 1). In this respect, high density x-ray phosphors such as Gd2O2S are better than ZnS based cathode ray tube phosphors. Scintillating fiber optics can be used instead of a discrete phosphor layer. The resolution of scintillating fiber optics that are used in x-ray imaging exceed 20 1p/mm and can be made very large. An example of a digital TEM image using a scintillating fiber optic plate is shown in Figure 2.

Ionic homeostasis and subcellular element compartmentation

1990 ◽  
Vol 48 (2) ◽  
pp. 150-151
Author(s):  
Ann LeFurgey ◽  
Peter Ingram ◽  
J.J. Blum ◽  
M.C. Carney ◽  
L.A. Hawkey ◽  
...  
Keyword(s):  
Leishmania Major ◽  
Ionic Homeostasis ◽  
X Ray ◽  
Functional Studies ◽  
Cell Compartments ◽  
X Ray Imaging ◽  
Resolution Electron ◽  
Multiple Cell ◽  
Role Of Zn

Subcellular compartments commonly identified and analyzed by high resolution electron probe x-ray microanalysis (EPXMA) include mitochondria, cytoplasm and endoplasmic or sarcoplasmic reticulum. These organelles and cell regions are of primary importance in regulation of cell ionic homeostasis. Correlative structural-functional studies, based on the static probe method of EPXMA combined with biochemical and electrophysiological techniques, have focused on the role of these organelles, for example, in maintaining cell calcium homeostasis or in control of excitation-contraction coupling. New methods of real time quantitative x-ray imaging permit simultaneous examination of multiple cell compartments, especially those areas for which both membrane transport properties and element content are less well defined, e.g. nuclei including euchromatin and heterochromatin, lysosomes, mucous granules, storage vacuoles, microvilli. Investigations currently in progress have examined the role of Zn-containing polyphosphate vacuoles in the metabolism of Leishmania major, the distribution of Na, K, S and other elements during anoxia in kidney cell nuclel and lysosomes; the content and distribution of S and Ca in mucous granules of cystic fibrosis (CF) nasal epithelia; the uptake of cationic probes by mltochondria in cultured heart ceils; and the junctional sarcoplasmic retlculum (JSR) in frog skeletal muscle.

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