Experimental studies on few-view reconstruction for high-resolution micro-CT

2013 ◽  
Vol 21 (1) ◽  
pp. 25-42 ◽  
Author(s):  
Kriti Sen Sharma ◽  
Xin Jin ◽  
Christian Holzner ◽  
Shree Narayanan ◽  
Baodong Liu ◽  
...  
Keyword(s):  
High Resolution ◽  
Experimental Studies ◽  
Micro Ct ◽  
View Reconstruction

Laser interstitial thermotherapy (LITT) monitoring using high-resolution digital mammography: theory and experimental studies

2002 ◽  
Vol 47 (16) ◽  
pp. 2987-2999 ◽  
Author(s):  
Ahmed M Minhaj ◽  
Fabrice Manns ◽  
Peter J Milne ◽  
David B Denham ◽  
Nelson Salas Jr ◽  
...  
Keyword(s):  
High Resolution ◽  
Digital Mammography ◽  
Experimental Studies ◽  
Interstitial Thermotherapy

scholarly journals Photoionization Cross-Sections of Carbon-Like N+ Near the K-Edge (390–440 eV)

Atoms ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 27
Author(s):  
Jean-Paul Mosnier ◽  
Eugene T. Kennedy ◽  
Jean-Marc Bizau ◽  
Denis Cubaynes ◽  
Ségolène Guilbaud ◽  
...  
Keyword(s):  
High Resolution ◽  
Cross Section ◽  
Cross Sections ◽  
Experimental Studies ◽  
Photoionization Cross Section ◽  
Theoretical Work ◽  
Rydberg Series ◽  
R Matrix ◽  
Resonance Strengths ◽  
Nitrogen Ion

High-resolution K-shell photoionization cross-sections for the C-like atomic nitrogen ion (N+) are reported in the 398 eV (31.15 Å) to 450 eV (27.55 Å) energy (wavelength) range. The results were obtained from absolute ion-yield measurements using the SOLEIL synchrotron radiation facility for spectral bandpasses of 65 meV or 250 meV. In the photon energy region 398–403 eV, 1s⟶2p autoionizing resonance states dominated the cross section spectrum. Analyses of the experimental profiles yielded resonance strengths and Auger widths. In the 415–440 eV photon region 1s⟶(1s2s22p2 4P)np and 1s⟶(1s2s22p2 2P)np resonances forming well-developed Rydberg series up n=7 and n=8 , respectively, were identified in both the single and double ionization spectra. Theoretical photoionization cross-section calculations, performed using the R-matrix plus pseudo-states (RMPS) method and the multiconfiguration Dirac-Fock (MCDF) approach were bench marked against these high-resolution experimental results. Comparison of the state-of-the-art theoretical work with the experimental studies allowed the identification of new resonance features. Resonance strengths, energies and Auger widths (where available) are compared quantitatively with the theoretical values. Contributions from excited metastable states of the N+ ions were carefully considered throughout.

Dentinal microcracks induced by endodontic procedures: suggested design for experimental studies using micro-CT and strain gauges

2021 ◽  
Author(s):  
Stéphanie Quadros Tonelli ◽  
Marcelo Avelar Antunes ◽  
Kênia Maria Soares de Toubes ◽  
Antônio Carlos de Oliveira Miranda ◽  
André Maués Brabo Pereira ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Strain Gauges ◽  
Micro Ct

scholarly journals Longitudinal in vivo evaluation of bone regeneration by combined measurement of multi-pinhole SPECT and micro-CT for tissue engineering

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Philipp S. Lienemann ◽  
Stéphanie Metzger ◽  
Anna-Sofia Kiveliö ◽  
Alain Blanc ◽  
Panagiota Papageorgiou ◽  
...  
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Bone Formation ◽  
Bone Regeneration ◽  
Bone Defects ◽  
Histological Evaluation ◽  
Biological Processes ◽  
Micro Ct ◽  
Pinhole Spect

Abstract Over the last decades, great strides were made in the development of novel implants for the treatment of bone defects. The increasing versatility and complexity of these implant designs request for concurrent advances in means to assess in vivo the course of induced bone formation in preclinical models. Since its discovery, micro-computed tomography (micro-CT) has excelled as powerful high-resolution technique for non-invasive assessment of newly formed bone tissue. However, micro-CT fails to provide spatiotemporal information on biological processes ongoing during bone regeneration. Conversely, due to the versatile applicability and cost-effectiveness, single photon emission computed tomography (SPECT) would be an ideal technique for assessing such biological processes with high sensitivity and for nuclear imaging comparably high resolution (<1 mm). Herein, we employ modular designed poly(ethylene glycol)-based hydrogels that release bone morphogenetic protein to guide the healing of critical sized calvarial bone defects. By combined in vivo longitudinal multi-pinhole SPECT and micro-CT evaluations we determine the spatiotemporal course of bone formation and remodeling within this synthetic hydrogel implant. End point evaluations by high resolution micro-CT and histological evaluation confirm the value of this approach to follow and optimize bone-inducing biomaterials.

scholarly journals High-resolution MRI and micro-CT in an ex vivo rabbit anterior cruciate ligament transection model of osteoarthritis

2004 ◽  
Vol 12 (8) ◽  
pp. 614-626 ◽  
Author(s):  
Danika L. Batiste ◽  
Alexandra Kirkley ◽  
Sheila Laverty ◽  
Lisa M.F. Thain ◽  
Alison R. Spouge ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
High Resolution ◽  
Ex Vivo ◽  
Cruciate Ligament ◽  
Micro Ct ◽  
Anterior Cruciate Ligament Transection ◽  
High Resolution Mri ◽  
Anterior Cruciate

MicroCT protocols for scanning of embryos and juvenile Hexaplex trunculus v1

2021 ◽  
Author(s):  
Eva Chatzinikolaou ◽  
Kleoniki Keklikoglou
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
3D Imaging ◽  
Imaging Technique ◽  
Ct Scanning ◽  
Micro Ct ◽  
Micro Computed Tomography ◽  
Gastropod Species ◽  
Biological Studies ◽  
Hexaplex Trunculus

Micro-computed tomography (micro-CT) is a high-resolution 3D-imaging technique which is now increasingly applied in biological studies focusing on taxonomy and functional morphology. The creation of virtual representations of specimens can increase availability of otherwise underexploited and inaccessible samples. This protocol aims to standardise micro-CT scanning procedures for embryos and juveniles of the marine gastropod species Hexaplex trunculus.

scholarly journals 3D-histopathological grading of articular cartilage using contrast-enhanced high-resolution micro-CT

2016 ◽  
Vol 24 ◽  
pp. S277-S278
Author(s):  
H. Gahunia ◽  
S. Karhula ◽  
T. Ylitalo ◽  
E. Hæggström ◽  
K.P. Pritzker ◽  
...  
Keyword(s):  
Articular Cartilage ◽  
High Resolution ◽  
Micro Ct ◽  
Contrast Enhanced ◽  
Histopathological Grading

Digital rock physics and application of high-resolution micro-CT techniques for geomaterials

2018 ◽  
pp. 299-307 ◽  
Author(s):  
Bankim Mahanta ◽  
P.G. Ranjith ◽  
T.N. Singh ◽  
Vikram Vishal ◽  
WenHui Duan ◽  
...  
Keyword(s):  
High Resolution ◽  
Rock Physics ◽  
Micro Ct ◽  
Digital Rock Physics ◽  
Digital Rock
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