scholarly journals Non-destructive NIR spectral imaging assessment of bone water: Comparison to MRI measurements

Bone ◽  
2017 ◽  
Vol 103 ◽  
pp. 116-124 ◽  
Author(s):  
Chamith S. Rajapakse ◽  
Mugdha V. Padalkar ◽  
Hee Jin Yang ◽  
Mikayel Ispiryan ◽  
Nancy Pleshko
Keyword(s):  
Spectral Imaging ◽  
Bone Water ◽  
Non Destructive ◽  
Mri Measurements

scholarly journals Nanostructure-specific X-ray tomography reveals myelin levels, integrity and axon orientations in mouse and human nervous tissue

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Marios Georgiadis ◽  
Aileen Schroeter ◽  
Zirui Gao ◽  
Manuel Guizar-Sicairos ◽  
Marianne Liebi ◽  
...  
Keyword(s):  
Mouse Brain ◽  
Nervous Tissue ◽  
Signal Transmission ◽  
X Ray ◽  
Tensor Tomography ◽  
Quantitative Studies ◽  
X Ray Scattering ◽  
Imaging Approach ◽  
Non Destructive ◽  
Mri Measurements

AbstractMyelin insulates neuronal axons and enables fast signal transmission, constituting a key component of brain development, aging and disease. Yet, myelin-specific imaging of macroscopic samples remains a challenge. Here, we exploit myelin’s nanostructural periodicity, and use small-angle X-ray scattering tensor tomography (SAXS-TT) to simultaneously quantify myelin levels, nanostructural integrity and axon orientations in nervous tissue. Proof-of-principle is demonstrated in whole mouse brain, mouse spinal cord and human white and gray matter samples. Outcomes are validated by 2D/3D histology and compared to MRI measurements sensitive to myelin and axon orientations. Specificity to nanostructure is exemplified by concomitantly imaging different myelin types with distinct periodicities. Finally, we illustrate the method’s sensitivity towards myelin-related diseases by quantifying myelin alterations in dysmyelinated mouse brain. This non-destructive, stain-free molecular imaging approach enables quantitative studies of myelination within and across samples during development, aging, disease and treatment, and is applicable to other ordered biomolecules or nanostructures.

A novel hyper-spectral imaging apparatus for the non-destructive analysis of objects of artistic and historic value

2003 ◽  
Vol 4 ◽  
pp. 330-337 ◽  
Author(s):  
Costas Balas ◽  
Vassilis Papadakis ◽  
Nicolas Papadakis ◽  
Antonis Papadakis ◽  
Eleftheria Vazgiouraki ◽  
...  
Keyword(s):  
Spectral Imaging ◽  
Hyper Spectral ◽  
Destructive Analysis ◽  
Hyper Spectral Imaging ◽  
Non Destructive

scholarly journals Rapid and Non-Destructive Detection of Compression Damage of Yellow Peach Using an Electronic Nose and Chemometrics

Sensors ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 1866 ◽  
Author(s):  
Xiangzheng Yang ◽  
Jiahui Chen ◽  
Lianwen Jia ◽  
Wangqing Yu ◽  
Da Wang ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Supply Chain ◽  
Electronic Nose ◽  
Correct Answer ◽  
Mechanical Damage ◽  
Spectral Imaging ◽  
Visual Observation ◽  
Promising Candidate ◽  
Non Destructive ◽  
Compression Damage

The rapid and non-destructive detection of mechanical damage to fruit during postharvest supply chains is important for monitoring fruit deterioration in time and optimizing freshness preservation and packaging strategies. As fruit is usually packed during supply chain operations, it is difficult to detect whether it has suffered mechanical damage by visual observation and spectral imaging technologies. In this study, based on the volatile substances (VOCs) in yellow peaches, the electronic nose (e-nose) technology was applied to non-destructively predict the levels of compression damage in yellow peaches, discriminate the damaged fruit and predict the time after the damage. A comparison of the models, established based on the samples at different times after damage, was also carried out. The results show that, at 24 h after damage, the correct answer rate for identifying the damaged fruit was 93.33%, and the residual predictive deviation in predicting the levels of compression damage and the time after the damage, was 2.139 and 2.114, respectively. The results of e-nose and gas chromatography-mass spectrophotometry (GC–MS) showed that the VOCs changed after being compressed—this was the basis of the e-nose detection. Therefore, the e-nose is a promising candidate for the detection of compression damage in yellow peach.

Non-destructive detection of dicyandiamide in infant formula powder using multi-spectral imaging coupled with chemometrics

2016 ◽  
Vol 97 (7) ◽  
pp. 2094-2099 ◽  
Author(s):  
Changhong Liu ◽  
Wei Liu ◽  
Jianbo Yang ◽  
Ying Chen ◽  
Lei Zheng
Keyword(s):  
Infant Formula ◽  
Spectral Imaging ◽  
Non Destructive

scholarly journals Autofluorescence-spectral imaging as an innovative method for rapid, non-destructive and reliable assessing of soybean seed quality

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Clíssia Barboza da Silva ◽  
Nielsen Moreira Oliveira ◽  
Marcia Eugenia Amaral de Carvalho ◽  
André Dantas de Medeiros ◽  
Marina de Lima Nogueira ◽  
...  
Keyword(s):  
Machine Learning ◽  
High Performance ◽  
Seed Quality ◽  
Soybean Seed ◽  
Spectral Imaging ◽  
Machine Learning Algorithms ◽  
Support Vector ◽  
Soybean Seeds ◽  
Linear Discriminant ◽  
Non Destructive

AbstractIn the agricultural industry, advances in optical imaging technologies based on rapid and non-destructive approaches have contributed to increase food production for the growing population. The present study employed autofluorescence-spectral imaging and machine learning algorithms to develop distinct models for classification of soybean seeds differing in physiological quality after artificial aging. Autofluorescence signals from the 365/400 nm excitation-emission combination (that exhibited a perfect correlation with the total phenols in the embryo) were efficiently able to segregate treatments. Furthermore, it was also possible to demonstrate a strong correlation between autofluorescence-spectral data and several quality indicators, such as early germination and seed tolerance to stressful conditions. The machine learning models developed based on artificial neural network, support vector machine or linear discriminant analysis showed high performance (0.99 accuracy) for classifying seeds with different quality levels. Taken together, our study shows that the physiological potential of soybean seeds is reduced accompanied by changes in the concentration and, probably in the structure of autofluorescent compounds. In addition, altering the autofluorescent properties in seeds impact the photosynthesis apparatus in seedlings. From the practical point of view, autofluorescence-based imaging can be used to check modifications in the optical properties of soybean seed tissues and to consistently discriminate high-and low-vigor seeds.

scholarly journals Non-destructive Corrosion Diagnosis of Painted Hot-dip Galvanizing Steel Sheets by Using THz Spectral Imaging

2014 ◽  
Vol 63 (9) ◽  
pp. 504-509 ◽  
Author(s):  
Yuta Nakamura ◽  
Hidetaka Kariya ◽  
Akihiro Sato ◽  
Tadao Tanabe ◽  
Katsuhiro Nishihara ◽  
...  
Keyword(s):  
Spectral Imaging ◽  
Steel Sheets ◽  
Non Destructive
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