An Improved AFM Dynamic Imaging Method Based on Data Fusion of Neighboring Point Set

2011 ◽  
Vol 37 (2) ◽  
pp. 214-221 ◽  
Author(s):  
Xiao-Kun DONG ◽  
Yong-Chun FANG ◽  
Yu-Dong ZHANG
Keyword(s):  
Data Fusion ◽  
Dynamic Imaging ◽  
Imaging Method ◽  
Neighboring Point ◽  
Point Set

A PRACTICAL DYNAMIC IMAGING METHOD FOR FAST-SCANNING ATOMIC FORCE MICROSCOPY

2013 ◽  
Vol 41 (4) ◽  
pp. 394-405 ◽  
Author(s):  
Xiao Ren ◽  
Yongchun Fang ◽  
Ningning Qi ◽  
Ming Wu ◽  
Xizeng Feng
Keyword(s):  
Atomic Force Microscopy ◽  
Dynamic Imaging ◽  
Imaging Method ◽  
Force Microscopy ◽  
Atomic Force

scholarly journals Revised Equations to Estimate Glomerular Filtration Rate from Serum Creatinine and Cystatin C in China

2019 ◽  
Vol 44 (4) ◽  
pp. 553-564 ◽  
Author(s):  
Min Yang ◽  
Yonghua Zou ◽  
Tong Lu ◽  
Yule Nan ◽  
Jianying Niu ◽  
...  
Keyword(s):  
Glomerular Filtration Rate ◽  
Serum Creatinine ◽  
Glomerular Filtration ◽  
Cystatin C ◽  
Filtration Rate ◽  
Dynamic Imaging ◽  
Imaging Method ◽  
Validation Data ◽  
Data Set ◽  
Precision And Accuracy

Aim: Our previous study demonstrated that the cystatin C-based chronic kidney disease (CKD)-EPI equation and combined by serum creatinine (CKD-EPIscr-cys) had better capability to accurately evaluate glomerular filtration rate in the CKD participants. Considering that the accuracy of estimated glomerular filtration rate (eGFR) remains less ideally, it is essential to modify the equation by including the Chinese eGFR racial factor in order to improve its performance. Methods: Two prospective cohorts were enrolled in 2 medical centers. New equations were developed in 529 participants and validated in 313 participants. Reference glomerular filtration rate (rGFR) was taken by 99mTc-DTPA renal dynamic imaging method (Gates method). The primary outcomes of this study were bias, precision (interquartile range of difference [IQR]), and accuracy (the proportion of eGFR within 30% of rGFR [P30] and root mean square error [RMSE]) of eGFR versus rGFR. Results: In a development data set, Chinese coefficients for CKD-EPIscr (C-CKD-EPIscr), CKD-EPIcys (C-CKD-EPIcys), and CKD-EPIscr-cys (C-CKD-EPIscr-cys) were 0.871, 0.879, and 0.891, respectively. In a validation data set, C-CKD-EPIcys was the most accurate with highest P30 value (62.3%), relative lowest IQR (15.45), and RMSE (0.80) among 6 equations, though the bias of C-CKD-EPIcys was not better than CKD-EPIcys. C-CKD-EPIscr and C-CKD-EPIscr-cys equations were improved in bias (p < 0.001), ­precision, and accuracy (p = 0.004 and <0.001 for P30) compared with CKD-EPIscr and CKD-EPIscr-cys. Conclusion: C-CKD-EPIcys was the most accurate with the highest P30 value, relative lowest IQR, and RMSE among 6 equations. C-CKD-EPIscr and C-CKD-EPIscr-cys equations were improved in bias, precision, and accuracy. Other external validation of these equations is needed.

Time-Resolved Thermoreflectance Imaging for Thermal Testing and Analysis

2013 ◽  
Author(s):  
Kazuaki Yazawa ◽  
Dustin Kendig ◽  
Ali Shakouri
Keyword(s):  
Thermal Imaging ◽  
High Speed ◽  
Near Infrared ◽  
Infrared Emission ◽  
Dynamic Imaging ◽  
Thermal Testing ◽  
Imaging Method ◽  
Time Resolved ◽  
Microelectronic Devices ◽  
Lock In

Abstract High speed, time-resolved, thermoreflectance imaging is a novel way to locate defects or regions of potential failures in microelectronic devices. This paper reports on our thermoreflectance technique for dynamic imaging of circuit temperature distributions. This transient imaging method is based on a precise electrical lock-in technique with image processing similar to an old fashioned animation movie. An ordinal shutter speed camera is used in conjunction with an illumination LED that is pulsed for sampling the temperature distribution. This paper presents the method and gives a description of the system hardware. A theoretical comparison to lock-in thermography, which is based on infrared emission imaging, will be given. Limitations of thermoreflectance and the driving factors for spatial and time resolution will be discussed. Finally, we highlight and provide examples of near infrared (NIR) wavelength imaging, to enable both through-silicon thermal imaging and emission imaging in the same system. The combination of these two techniques is expected to enable hotspot temperatures and any anomalous emission sites to be correlated, hopefully leading to a better understanding of the nature of the defect.

Multimodal Remote Sensing Data Fusion via Coherent Point Set Analysis

2013 ◽  
Vol 10 (4) ◽  
pp. 672-676 ◽  
Author(s):  
Huanxin Zou ◽  
Hao Sun ◽  
Kefeng Ji ◽  
Chun Du ◽  
Chunyan Lu
Keyword(s):  
Remote Sensing ◽  
Data Fusion ◽  
Remote Sensing Data ◽  
Sensing Data ◽  
Point Set

Assessment of airway response distribution and paradoxical airway dilation in mice during methacholine challenge

2017 ◽  
Vol 122 (3) ◽  
pp. 503-510 ◽  
Author(s):  
S. Dubsky ◽  
G. R. Zosky ◽  
K. Perks ◽  
C. R. Samarage ◽  
Y. Henon ◽  
...  
Keyword(s):  
Dynamic Imaging ◽  
Lung Mechanics ◽  
Imaging Method ◽  
Response Distribution ◽  
Interconnected System ◽  
Airway Response ◽  
Airway Responses ◽  
And Control

Detailed information on the distribution of airway diameters during bronchoconstriction in situ is required to understand the regional response of the lungs. Imaging studies using computed tomography (CT) have previously measured airway diameters and changes in response to bronchoconstricting agents, but the manual measurements used have severely limited the number of airways measured per subject. Hence, the detailed distribution and heterogeneity of airway responses are unknown. We have developed and applied dynamic imaging and advanced image-processing methods to quantify and compare hundreds of airways in vivo. The method, based on CT, was applied to house dust-mite-sensitized and control mice during intravenous methacholine (MCh) infusion. Airway diameters were measured pre- and post-MCh challenge, and the results compared demonstrate the distribution of airway response throughout the lungs during mechanical ventilation. Forced oscillation testing was used to measure the global response in lung mechanics. We found marked heterogeneity in the response, with paradoxical dilation of airways present at all airway sizes. The probability of paradoxical dilation decreased with decreasing baseline airway diameter and was not affected by pre-existing inflammation. The results confirm the importance of considering the lung as an entire interconnected system rather than a collection of independent units. It is hoped that the response distribution measurements can help to elucidate the mechanisms that lead to heterogeneous airway response in vivo. NEW & NOTEWORTHY Information on the distribution of airway diameters during bronchoconstriction in situ is critical for understanding the regional response of the lungs. We have developed an imaging method to quantify and compare the size of hundreds of airways in vivo during bronchoconstriction in mice. The results demonstrate large heterogeneity with both constriction and paradoxical dilation of airways, confirming the importance of considering the lung as an interconnected system rather than a collection of independent units.

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