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Efficient scheme of low-dose CT reconstruction using TV minimization with an adaptive stopping strategy Article

Yong DING, Tuo HU

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 12,   Pages 2001-2008 doi: 10.1631/FITEE.1700287

Abstract: Recently, low-dose computed tomography (CT) has become highly desirable because of the growing concernFor low-dose CT imaging, it is a significant challenge to guarantee image quality while reducing radiationTo promote low-dose CT imaging, we propose a promising reconstruction scheme which combines total-variationin terms of image quality and computational efficiency, which validates its potential for low-dose CTimaging.

Keywords： Low-dose computed tomography (CT)     CT imaging     Total variation     Sparse dictionary learning    

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Simultaneous acquisition of CT angiography and whole brain CT perfusion images by using multiphase dynamic

Weiwei CHEN, Jianpin QI, Wenzhen ZHU, Wenhua HUANG, Jinmei SONG

Frontiers of Medicine 2009, Volume 3, Issue 2,   Pages 230-235 doi: 10.1007/s11684-009-0023-8

Abstract: We implemented a new protocol — multiphase dynamic helical scan to acquire CT angiography (CTA) and wholebrain CT perfusion (CTP) images simultaneously with single scan on 16 multidetector CT (MDCT).Each group underwent CT scan by using the new protocol, traditional CTA and CTP protocol, respectivelyThe volume CT dose index (CTDIvol) and dose length product (DLP) of our protocol were lower than the

Keywords： computed tomography angiography     computed tomography perfusion    

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Low-dose CT for lung cancer screening: opportunities and challenges

Hongbing Shen

Frontiers of Medicine 2018, Volume 12, Issue 1,   Pages 116-121 doi: 10.1007/s11684-017-0600-1

Abstract:

Lung cancer is among the most frequently diagnosed cancers worldwide and the leading cause of cancer death in both males and females. Screening for lung cancer coupled with earlier intervention has long been studied as an approach to mortality reduction. However, minimal progress was achieved until recently, when low-dose spiral computed tomography (LDCT) screening demonstrated a 20% reduction in mortality from lung cancer in a randomized controlled trial (RCT), the National Lung Screening Trial, from the United States. On the basis of this finding, LDCT has been recommended for lung cancer screening in high-risk populations by several clinical guidelines. However, results from the following independent RCTs in Europe failed to show consistent conclusions. In addition, intractable problems gradually emerged with the progress of LDCT screening. This paper summarizes and discusses the main observations and challenges of LDCT screening for lung cancer. Before spreading implementation of LDCT screening, challenges, including high false-positive rates, overdiagnosis, enormous costs, and radiation risk, must be addressed. Complementary biomarkers and technical improvement are expected in the field of lung cancer screening in the near future.

Keywords： lung cancer     low-dose computerized tomography     early detection     opportunities     challenges    

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The dynamic correction of collimation errors of CT slicing pictures

LIU Ya-xiong, Sekou Sing-are, LI Di-chen, LU Bing-heng

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 2,   Pages 168-172 doi: 10.1007/s11465-006-0016-0

Abstract: To eliminate the motion artifacts of CT images caused by patient motions and other related errors, twoconfirm that the correction method with any of the correctors can improve the accuracy and reliability of CT
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evaluation of renal function using diffusion weighted imaging and diffusion tensor imaging in type 2

Xiaoyan Chen,Wenxia Xiao,Xinchun Li,Jianxun He,Xiaochun Huang,Yuyu Tan

Frontiers of Medicine 2014, Volume 8, Issue 4,   Pages 471-476 doi: 10.1007/s11684-014-0365-8

Abstract:

This work aims to estimate the value of diffusion weighted imaging (DWI) and diffusion tensor imaging

Keywords： type 2 diabetes mellitus     microalbuminuria     diffusion weighted imaging     diffusion tensor imaging     early-stage    

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Direct Evidence of Coal Swelling and Shrinkage with Injecting CO2 and N2 Using in-situ Synchrotron X-ray Microtomography Article

Guanglei Zhang, P.G. Ranjith, Herbert E. Huppert

Engineering 2022, Volume 18, Issue 11,   Pages 88-95 doi: 10.1016/j.eng.2022.03.010

Abstract:

Deep coal seams are one of the world’s most widespread deposits for carbon dioxide (CO2) disposal and are generally located near large point sources of CO2 emissions. The injection of CO2 into coal seams has great potential to sequester CO2 while simultaneously enhancing coalbed methane (CO2-ECBM) recovery. Pilot tests of CO2-ECBM have been conducted in coal seams worldwide with favorable early results. However, one of the main technical barriers in coal seams needs to be resolved: Injecting CO2 reduces coal permeability and well injectivity. Here, using in situ synchrotron X-ray microtomography, we provide the first observational evidence that injecting nitrogen (N2) can reverse much of this lost permeability by reopening fractures that have closed due to coal swelling induced by CO2 adsorption. Our findings support the notion that injecting minimally treated flue gas—a mixture of mainly N2 and CO2—is an attractive alternative for ECBM recovery instead of pure CO2 injection in deep coal seams. Firstly, flue gas produced by power plants could be directly injected after particulate removal, thus avoiding high CO2-separation costs. Secondly, the presence of N2 makes it possible to maintain a sufficiently high level of coal permeability. These results suggest that flue-gas ECBM for deep coal seams may provide a promising path toward net-zero emissions from coal mines.

Keywords： CCS     CO2     -ECBM     Carbon neutrality     X-ray imaging     Coal permeability    

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Carbon dots-based fluorescence sensor for two-photon imaging of pH in diabetic mice

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 3,   Pages 298-306 doi: 10.1007/s11705-022-2212-9

Abstract: Finally, the CA-CDs has been successfully applied for two-photon imaging of the pH in liver and kidneyImaging results showed that the pH value in kidney of diabetic mice was lower than that of the normal

Keywords： carbon dots     two-photon imaging     pH     diabetic mice    

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In vivo imaging of hematopoietic stem cell development in the zebrafish

Panpan Zhang, Feng Liu

Frontiers of Medicine 2011, Volume 5, Issue 3,   Pages 239-247 doi: 10.1007/s11684-011-0123-0

Abstract: imaging is crucial for developmental biology and can further help to follow cell development/differentiationRecent advances in optical imaging techniques has facilitated tracing of the developmental dynamics ofThe zebrafish is an excellent model for imaging of hematopoiesis due to its transparent embryo at earlyIn this review, we summarize recent studies related to the non-invasive imaging of HSC transgenics,

Keywords： hematopoietic stem cell     hematopoiesis     in vivo imaging     transgenics     zebrafish    

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Anefficient quadrature demodulator for medical ultrasound imaging

Hao ZHOU,Yin-fei ZHENG

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 4,   Pages 301-310 doi: 10.1631/FITEE.1400205

Abstract: Quadrature demodulation is used in medical ultrasound imaging to derive the envelope and instantaneousIn this paper, we propose an efficient quadrature demodulation method for B-mode and color flow imagingIn the in vivo color flow imaging experiments, the time of the demodulation process was 5.66 ms and 3.36

Keywords： B-mode ultrasound imaging     Color flow imaging     Quadrature demodulation     Finite impulse response filter    

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Light field imaging: models, calibrations, reconstructions,and applications Review

Hao ZHU, Qing WANG, Jingyi YU

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 9,   Pages 1236-1249 doi: 10.1631/FITEE.1601727

Abstract: Light field imaging is an emerging technology in computationalphotography areas.Based on innovative designs of the imaging modeland the optical path, light field cameras not only recordFinally,open issues in light field imaging and long-term application prospectsin other natural sciences

Keywords： Light field imaging     Plenoptic function     Imaging model     Calibration     Reconstruction    

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Synthesis and application of superparamagnetic iron oxide nanoparticles in targeted therapy and imaging

Liangqian Tong, Ming Zhao, Shu Zhu, Jing Chen

Frontiers of Medicine 2011, Volume 5, Issue 4,   Pages 379-387 doi: 10.1007/s11684-011-0162-6

Abstract: Superparamagnetic iron oxide (SPIO) nanoparticles have become a popular strategy of cancer treatment and molecular imaging, targeted ligand-conjugated, and/or drug-loaded SPIO nanoparticles, as powerful tools for targeted imagingadvancements in the field of SPIO nanoparticles in terms of synthesis, targeted therapy, and cancer imaging

Keywords： nanoparticles     superparamagnetic iron oxide     targeted therapy     molecular imaging     cancer    

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A highly selective fluorescent probe for real-time imaging of UDP-glucuronosyltransferase 1A8 in living

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 1,   Pages 103-111 doi: 10.1007/s11705-021-2064-8

Abstract: Uridine diphosphate (UDP)-glucuronosyltransferases (UGTs) are enzymes involved in the biotransformation of important endogenous compounds such as steroids, bile acids, and hormones as well as exogenous substances including drugs, environmental toxicants, and carcinogens. Here, a novel fluorescent probe BDMP was developed based on boron-dipyrromethene (BODIPY) with high sensitivity for the detection of UGT1A8. The glucuronidation of BDMP not only exhibited a red-emission wavelength (λex/λem = 500/580 nm), but also displayed an excellent UGT1A8-dependent fluorescence signal with a good linear relationship with UGT1A8 concentration. Based on this perfect biocompatibility and cell permeability, BDMP was successfully used to image endogenous UGT1A8 in human cancer cell lines (LoVo and HCT15) in real time. In addition, BDMP could also be used to visualize UGT1A8 in tumor tissues. These results suggested that BDMP is a promising molecular tool for the investigation of UGT1A8-mediated physiological function in humans.

Keywords： UDP-glucuronosyltransferase 1A8     fluorescent probe     subtype selectivity     fluorescence imaging    

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of the mechanisms of acupuncture in the treatment of migraine based on functional magnetic resonance imaging

Frontiers of Medicine   Pages 993-1005 doi: 10.1007/s11684-023-0989-7

Abstract: The functional magnetic resonance imaging (fMRI) data were analyzed for investigating brain changes induced

Keywords： acupuncture     migraine     fMRI     metabolome     proteome    

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Analyzing the characterization of pore structures and permeability of diesel contaminated clays under different aging conditions

Frontiers of Structural and Civil Engineering   Pages 1264-1280 doi: 10.1007/s11709-023-0921-x

Abstract: In this study, mercury intrusion porosimetry (MIP) and X-ray micro-computed tomography (XRμCT) were usedThe XRμCT analysis yielded consistent results; it showed that aging renders pores more spherical andThe combination of MIP and XRμCT provided a comprehensive and reliable characterization of the soil pore

Keywords： MIP     XRμCT     aging     diesel content     pore structure     permeability characteristics    

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Iron oxide nanoparticle-based theranostics for cancer imaging and therapy

Xiaoqing REN,Hongwei CHEN,Victor YANG,Duxin SUN

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 3,   Pages 253-264 doi: 10.1007/s11705-014-1425-y

Abstract: studied, iron oxide nanoparticles have advantages since IONPs have good biocompatibility and spatial imagingThis review is focused on the IONP-based nanotheranostics for cancer imaging and treatment.applications of IONP nanotheranostics is summarized, which includes IONP-based diagnosis, magnetic resonance imaging(MRI), multimodal imaging, chemotherapy, hyperthermal therapy, photodynamic therapy, and gene delivery

Keywords： theranostics     iron oxide nanoparticles     MRI     drug delivery     photothermal therapy     photodynamic therapy    

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Title Author Date Type Operation

Efficient scheme of low-dose CT reconstruction using TV minimization with an adaptive stopping strategy

Yong DING, Tuo HU

Journal Article

Simultaneous acquisition of CT angiography and whole brain CT perfusion images by using multiphase dynamic

Weiwei CHEN, Jianpin QI, Wenzhen ZHU, Wenhua HUANG, Jinmei SONG

Journal Article

Low-dose CT for lung cancer screening: opportunities and challenges

Hongbing Shen

Journal Article

The dynamic correction of collimation errors of CT slicing pictures

LIU Ya-xiong, Sekou Sing-are, LI Di-chen, LU Bing-heng

Journal Article

evaluation of renal function using diffusion weighted imaging and diffusion tensor imaging in type 2

Xiaoyan Chen,Wenxia Xiao,Xinchun Li,Jianxun He,Xiaochun Huang,Yuyu Tan

Journal Article

Direct Evidence of Coal Swelling and Shrinkage with Injecting CO2 and N2 Using in-situ Synchrotron X-ray Microtomography

Guanglei Zhang, P.G. Ranjith, Herbert E. Huppert

Journal Article

Carbon dots-based fluorescence sensor for two-photon imaging of pH in diabetic mice

Journal Article

In vivo imaging of hematopoietic stem cell development in the zebrafish

Panpan Zhang, Feng Liu

Journal Article

Anefficient quadrature demodulator for medical ultrasound imaging

Hao ZHOU,Yin-fei ZHENG

Journal Article

Light field imaging: models, calibrations, reconstructions,and applications

Hao ZHU, Qing WANG, Jingyi YU

Journal Article

Synthesis and application of superparamagnetic iron oxide nanoparticles in targeted therapy and imaging

Liangqian Tong, Ming Zhao, Shu Zhu, Jing Chen

Journal Article

A highly selective fluorescent probe for real-time imaging of UDP-glucuronosyltransferase 1A8 in living

Journal Article

of the mechanisms of acupuncture in the treatment of migraine based on functional magnetic resonance imaging

Journal Article

Analyzing the characterization of pore structures and permeability of diesel contaminated clays under different aging conditions

Journal Article

Iron oxide nanoparticle-based theranostics for cancer imaging and therapy

Xiaoqing REN,Hongwei CHEN,Victor YANG,Duxin SUN

Journal Article