نتایج جستجو برای: micro scan image

تعداد نتایج: 555984  

2017
Danny Poinapen Joanna K. Konopka Joseph U. Umoh Chris J. D. Norley Jeremy N. McNeil David W. Holdsworth

Background: Live imaging of whole invertebrates can be accomplished with X-ray micro-computed tomography (micro-CT) at 10-100 μm spatial resolution. However, image quality could be compromised by the movement of live subjects, producing image artefacts. We tested the feasibility of using CO2 gas to induce temporary fullimmobilization of sufficient duration to image live insects based on their a...

2007
Pooria Jafari Moghadam Mohammad Hassan Moradi

cDNA micro arrays are more and more frequently used in molecular biology as they can give insight into the relation of an organism's metabolism and its genome. The process of imaging a micro array sample can introduce a great deal of noise and bias into the data with higher variance than the original signal which may swamp the useful information. As imperfections and fabrication artifacts often...

2013
Özhan Özdoğan Nazlı Pınar Karahan Sülen Sarıoğlu Hatice Durak

UNLABELLED A bone scan with 99mTc MDP was obtained to rule out the presence of micro fractures in a patient with the diagnosis of idiopathic osteoporosis. There was not any sign of micro fractures, but interestingly, both kidneys were diffusely very active. A differential diagnosis of acute kidney injury secondary to the use of nonsteroidal anti-inflammatory drug was made and reported after eli...

Journal: :Bone 2009
Jeffrey A Meganck Kenneth M Kozloff Michael M Thornton Stephen M Broski Steven A Goldstein

Bone mineral density (BMD) measurements are critical in many research studies investigating skeletal integrity. For pre-clinical research, micro-computed tomography (microCT) has become an essential tool in these studies. However, the ability to measure the BMD directly from microCT images can be biased by artifacts, such as beam hardening, in the image. This three-part study was designed to un...

Journal: :International journal of advances in engineering and technology 2012
Anil Sudhakar Kurhekar P R Apte

Micro-cantilever arrays with different dimensions are fabricated by micromachining technique onto silicon <1 0 0> substrate. These sputtered Gold-Coated micro-cantilevers were later surface functionalized. Scanning Electron Microscopy, Atomic Force Microscopy and Optical SWLI using LASER probe are employed to characterize the morphology and image measurement of the micro-cantilever arrays, resp...

2017
Hao Zhang Xianqi Li Yunmei Chen Jewook Park An-Ping Li X-G Zhang

We present an image postprocessing framework for Scanning Tunneling Microscope (STM) to reduce the strong spurious oscillations and scan line noise at fast scan rates and preserve the features, allowing an order of magnitude increase in the scan rate without upgrading the hardware. The proposed method consists of two steps for large scale images and four steps for atomic scale images. For large...

2017
Changhwan Kim Seung Hoon Baek Taewon Lee Jonggun Go Sun Young Kim Seungryong Cho

The objective of this study was to demonstrate the feasibility of using micro-CT scan of dental impressions for fabricating dental restorations and to compare the dimensional accuracy of dental models generated from various methods. The key idea of the proposed protocol is that dental impression of patients can be accurately digitized by micro-CT scan and that one can make digital cast model fr...

Journal: :Journal of Marine Science and Engineering 2023

Current methods of fusing side-scan sonar images fail to tackle the issues shadow removal, preservation information from adjacent strip images, and maintenance image clarity contrast. To address these deficiencies, a novel curvelet-transform-based approach that integrates complementary attribute details is proposed. By capitalizing on multiple scales orientations curvelet transform its intricat...

Journal: :JOM 2021

One of the major challenges in applying tomography methods for detecting defects composite materials is large image datasets generated during imaging, which require significant effort detection damage. Machine-learning (ML) a training dataset and can be efficient processing defect detection. Methods need to developed images train ML algorithms, focus present work. An additive manufactured fiber...

2014
Yan Xia Andreas K. Maier Martin Berger Joachim Hornegger

In this paper, we investigate an ROI image reconstruction in super short scan. The redundant rays in such scan are further shielded by using dynamic collimation. The acquired data coming with an extremely minimized radiation dose are sufficient for image reconstruction. For compensating resulting truncation, we apply a recently proposed algorithm Approximated Truncation Robust Algorithm for Com...

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