Article
Radiology, Nuclear Medicine & Medical Imaging
Aron K. Krizsan, Kornel Kukuts, Walid Al-Muhanna, Zoltan Szoboszlai, Laszlo Balazs, Balazs Szabo, Janos Kiss, Stephan Nekolla, Sandor Barna, Ildiko Garai, Tamas Bukki, Attila Forgacs
Summary: This study evaluated the imaging capabilities of a novel Multi-pinhole collimator designed for nuclear cardiology imaging. The results showed that this collimator improved image quality and allowed for shorter acquisition time for cardiovascular SPECT imaging.
Article
Radiology, Nuclear Medicine & Medical Imaging
Frank P. DiFilippo, Christopher J. Palestro, Kenneth J. Nichols
Summary: The automated quantitative analysis of SPECT phantom cold rods correlated well with visual scoring, with binary classification-based metrics performing particularly well. The suboptimal interobserver agreement highlights the importance of developing automated algorithms for evaluating scanner performance.
Article
Medicine, General & Internal
Mansour Alqahtani, Kathy Willowson, Roger Fulton, Chris Constable, Peter Kench
Summary: This study investigated the impact of reduced SPECT acquisition time on the quality of diagnostic images. The results showed that reduced acquisition time maintained good image quality and fair diagnostic confidence, especially at lower iteration numbers.
Article
Radiology, Nuclear Medicine & Medical Imaging
Samantha Delaney, Joni Sebastiano, Brian M. Zeglis, Outi M. Keinanen
Summary: The worldwide spread of persistent environmental pollutants is increasing rapidly, posing risks to human health. This review explores the use of molecular imaging and radiochemistry to study these pollutants. These techniques provide unique ways to analyze the pharmacokinetic profiles and bioaccumulation patterns of pollutants at environmentally relevant concentrations, facilitating the assessment of their potential health risks.
JOURNAL OF NUCLEAR MEDICINE
(2023)
Article
Immunology
Dima A. Hammoud, H. Clifford Lane, Sanjay K. Jain
Summary: Infections pose a significant threat to human health, and molecular imaging technologies have the potential to visualize molecular processes in living subjects, offering great promise for studying and addressing infections.
JOURNAL OF INFECTIOUS DISEASES
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Adrien Carabelli, Marjorie Canu, Marie de Fondaumiere, Marlene Debiossat, Julien Leenhardt, Alexis Broisat, Catherine Ghezzi, Gerald Vanzetto, Daniel Fagret, Gilles Barone-Rochette, Laurent M. Riou
Summary: This study investigated the feasibility of quantifying MPE from SPECT MPI for assessing CMVD-related variations in a preclinical model of T2D. Results showed that LIR did not improve T2D-induced CMVD, highlighting the potential clinical application of MPE for CMVD assessment.
EUROPEAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Emma Wikberg, Martijn van Essen, Tobias Ryden, Johanna Svensson, Peter Gjertsson, Peter Bernhardt
Summary: The aim of this study was to compare the detection rate of simulated liver lesions using MC-based OSEM reconstruction and conventional attenuation-corrected OSEM reconstruction. The results showed that the detection rate was significantly higher with MC OSEM reconstruction (50%) compared to conventional reconstruction.
Review
Food Science & Technology
Sunday J. Olakanmi, Digvir S. Jayas, Jitendra Paliwal
Summary: One of the most widely researched topics in the food industry is bread quality analysis. However, comprehensive reviews detailing the use of conventional analytical techniques and imaging methods for quality analysis in the bakery industry are limited. This review critically analyzes conventional methods and explores the potential of imaging techniques for quality assessment of baked products. It provides an in-depth assessment of different conventional techniques and discusses applications of imaging techniques in assessing the quality of bread and other baked goods.
COMPREHENSIVE REVIEWS IN FOOD SCIENCE AND FOOD SAFETY
(2023)
Article
Biochemistry & Molecular Biology
Toshihide Yamasaki, Kohei Sano, Takahiro Mukai
Summary: Oxidative stress, caused by imbalance in redox homeostasis, is associated with various diseases. Antioxidants play a crucial role in correcting the imbalance by reducing overproduction of reactive oxygen species. However, comprehensive understanding of the dynamics of redox substances in vivo is still lacking, and further development of sensitive detection methods is needed for translational research.
ANTIOXIDANTS & REDOX SIGNALING
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Boyang Pan, Na Qi, Qingyuan Meng, Jiachen Wang, Siyue Peng, Chengxiao Qi, Nan-Jie Gong, Jun Zhao
Summary: Using a deep learning method, high-quality SPECT images can be generated from fast SPECT/CT images, and it has shown better quality in clinical evaluation. The enhanced images outperformed 1/7 SPECT in terms of SUVmax, SUVmean, SSIM, and PSNR.
Review
Agronomy
Abdul Momin, Naoshi Kondo, Dimas Firmanda Al Riza, Yuichi Ogawa, David Obenland
Summary: Optical imaging techniques are extensively used to sort agricultural products based on various quality parameters. This article specifically focuses on the potential of fluorescence imaging for non-destructive assessment of agricultural product quality attributes. It discusses the concepts, methodology, and potential applications of fluorescence imaging, with a showcase example of detecting peel defects in citrus. Future investigation areas for fluorescence imaging applications in agricultural product quality assessment are also outlined.
Article
Medicine, Research & Experimental
Haoran Xu, Yongjia Tang, Yue Zhao, Fang Wang, Xin Gao, Dawei Deng, Yueqing Gu
Summary: A Tc-99m-labeled probe targeting GPC3 for SPECT imaging in HCC was developed with excellent stability and binding specificity, demonstrating acceptable binding specificity in in vitro cell assays. HepG2 tumors were clearly visualized with high contrast on SPECT/CT imaging, with promising potential for further clinical translation.
MOLECULAR PHARMACEUTICS
(2021)
Article
Multidisciplinary Sciences
Marios K. Tzomakas, Vasiliki Peppa, Antigoni Alexiou, Georgios Karakatsanis, Anastasios Episkopakis, Christos Michail, Ioannis Valais, George Fountos, Nektarios Kalyvas, Ioannis S. Kandarakis
Summary: This study evaluated the imaging performance of an electronic portal imaging device (EPID) using the QC-3V image quality phantom. The results can contribute to the improvement of image quality and support current image quality control protocols.
Article
Agronomy
Xuan Chu, Pu Miao, Kun Zhang, Hongyu Wei, Han Fu, Hongli Liu, Hongzhe Jiang, Zhiyu Ma
Summary: This study used hyperspectral imaging to assess the maturity and quality of dwarf bananas, demonstrating that hyperspectral imaging is an effective tool for evaluating banana maturity and quality.
Article
Computer Science, Information Systems
Guojia Hou, Yuxuan Li, Huan Yang, Kunqian Li, Zhenkuan Pan
Summary: Achieving subjective and objective quality assessment of underwater images is important, but limited due to the lack of publicly available datasets. To address this, we establish UID2021, a large-scale underwater image dataset, for evaluating NR UIQA metrics. The dataset consists of 60 degraded underwater images and their quality improved versions. Mean opinion scores are obtained for each image. Our dataset enables comprehensive evaluation and further research on UIQA.
ACM TRANSACTIONS ON MULTIMEDIA COMPUTING COMMUNICATIONS AND APPLICATIONS
(2023)
Article
Computer Science, Interdisciplinary Applications
Jennifer L. Druhan, Sophie Guillon, Manon Lincker, Bhavna Arora
Summary: This benchmark provides a rigorous test of a three-isotope system subject to radioactive decay and fractionation effects, showing good agreement among simulation results from different RTMs for various carbon cycling problems.
COMPUTATIONAL GEOSCIENCES
(2021)
Article
Environmental Sciences
Maegen B. Simmonds, Alan V. Di Vittorio, Claire Jahns, Emma Johnston, Andrew Jones, Peter S. Nico
Summary: Land-use and cover change plays a crucial role in climate change mitigation, but achieving emission reduction targets faces challenges due to competing land use priorities and uncertainties. Research shows that in jurisdictions with wildfire mitigation goals, strategies that reduce emissions and increase carbon sequestration can offset fuel reduction emissions effectively.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
Yang Lin, Ashley N. Campbell, Amrita Bhattacharyya, Nicole DiDonato, Allison M. Thompson, Malak M. Tfaily, Peter S. Nico, Whendee L. Silver, Jennifer Pett-Ridge
Summary: The study showed that redox conditions in humid tropical forest soil affect organic matter decomposition and CO2 flux. Aerobic and anaerobic heterotrophs exhibited different decomposition efficiencies towards labile substrates and refractory compounds, highlighting the importance of redox dynamics in influencing biogeochemical processes.
Article
Multidisciplinary Sciences
Alan V. Di Vittorio, Maegen B. Simmonds, Peter Nico
Summary: This study introduces a comprehensive approach to evaluate the impacts of multiple management strategies on carbon emissions more comprehensively. The effects of different management practices on landscape emissions may vary over time and space, with the actual implementation area playing a critical role in determining management effectiveness.
Article
Geography, Physical
Cecilia Cullen, Alison M. Anders, Jingtao Lai, Jennifer L. Druhan
Summary: This study investigates how groundwater transfer across subtle surface water divides facilitates channel network expansion in low-relief post-glacial areas. The research found that channel growth is significantly faster in routing cases than no-routing cases with identical groundwater fractions, and the fastest channel expansion occurs when around 30% of the total water enters the system.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Multidisciplinary Sciences
Xiu Yuan, Tongxu Liu, Patricia Fox, Amrita Bhattacharyya, Dipankar Dwivedi, Kenneth H. Williams, James A. Davis, T. David Waite, Peter S. Nico
Summary: Researchers conducted field measurements of H2O2 concentrations in an intra-meander hyporheic zone and in surface water in East River, CO. The study found a widespread presence of H2O2 in groundwater and surface water, closely correlated to local redox gradients. This suggests a sustained balance between H2O2 production and consumption in the hyporheic zone, with potential implications for various biogeochemical processes.
SCIENTIFIC REPORTS
(2022)
Article
Environmental Sciences
Susana Roque-Malo, Jennifer L. Druhan, Praveen Kumar
Summary: Vegetation optimizes its geochemical environment through root exudation, and a new model called REWTCrunch has been developed to simulate the effects of root exudation on soil biogeochemistry, filling an important gap in current simulation studies.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2022)
Review
Chemistry, Multidisciplinary
Adam D. Jew, Jennifer L. Druhan, Matthias Ihme, Anthony R. Kovscek, Ilenia Battiato, John P. Kaszuba, John R. Bargar, Gordon E. Brown
Summary: This review focuses on the complex chemical interactions between additives in hydraulic fracturing fluid (HFF) and minerals and organic matter in oil/gas shales. These interactions affect hydrocarbon recovery by influencing mineral dissolution and precipitation processes, as well as the porosity and permeability of the shales. The review also discusses the distribution of unconventional oil/gas shales, the types and purposes of chemical additives in HFF, and analysis methods used in characterizing the shales before and after hydraulic fracturing.
Article
Energy & Fuels
Hasan Javed Khan, Cynthia M. Ross, Jennifer L. Druhan
Summary: The study investigates the impact of acidic hydraulic fracturing fluid on shale rock fabric during injection, utilizing a combination of experimental and modeling approaches. Through SEM-EDS and high-resolution CT scans, the researchers observed significant changes in mineralogy and fracture network spatial alteration. The results show neutralization of acidic brine, fracture widening, and the influence of carbonate dissolution and fines migration on fracture evolution during reactive core floods.
Review
Environmental Sciences
Dipankar Dwivedi, Carl Steefel, Bhavna Arora, Jill Banfield, John Bargar, Maxim Boyanov, Scott C. Brooks, Xingyuan Chen, Susan S. Hubbard, Dan Kaplan, Kenneth M. Kemner, Peter S. Nico, Edward J. O'Loughlin, Eric M. Pierce, Scott L. Painter, Timothy D. Scheibe, Haruko M. Wainwright, Kenneth H. Williams, Mavrik Zavarin
Summary: This paper reviews the extensive research conducted by the US Department of Energy at representative sites and testbeds, exploring the distribution of contaminants and nutrients in water resources and their interactions with carbon and nitrogen dynamics. The paper also describes state-of-the-art characterization approaches and models for predicting contaminant fate and transport.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Engineering, Environmental
Barbara F. Esteves, Eleanor Spielman-Sun, Qingyun Li, Adam D. Jew, John R. Bargar, Jennifer L. Druhan
Summary: Celestite (SrSO4) precipitation is a common issue in hydraulic fracturing systems, especially in basins with high concentrations of strontium. In this study, a validated and flexible geochemical model was developed to predict celestite formation in unconventional environments. The model considered the effects of ionic strength, saturation index, and additives, and was expanded to include interactions between hydraulic fracturing fluids and shale rocks.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
N. M. Fernandez, J. Bouchez, L. A. Derry, J. Chorover, J. Gaillardet, I Giesbrecht, D. Fries, J. L. Druhan
Summary: This study analyzes the stable silicon isotope ratios (δ30Si) of stream water samples from six catchments with different climates and lithologies to understand the variability of δ30Si in low-order catchments and the controls on Si chemical and isotopic signatures. The results show that δ30Si varies both within and across sites, with distinct signatures preserved even after normalization for bedrock composition. The combined model used in this study reveals that site-specific architecture regulates stream silicon export signatures.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2022)
Article
Geochemistry & Geophysics
Alison K. Tune, Jennifer L. Druhan, Corey R. Lawrence, Daniella M. Rempe
Summary: This study investigates the oxidation of organic carbon in sedimentary bedrock and finds that the actual oxidation rate in the field is much lower than the rate achieved in laboratory experiments. Physical accessibility of organic carbon is found to be a key factor influencing oxidation, and respiration of recently fixed carbon from deep rooting dominates CO2 production.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Energy & Fuels
Christopher Zahasky, Manju Pharkavi Murugesu, Takeshi Kurotori, Collin Sutton, Jennifer L. L. Druhan, Bolivia Vega, Sally M. M. Benson, Anthony R. R. Kovscek
Summary: In this study, positron emission tomography (PET) was used to visualize the transport of a conservative tracer in fractured geologic materials. The resulting observations were analyzed using an analytical transport model, showing slight increases in matrix diffusivity and a more uniform fracture velocity distribution after exposure to low pH brine conditions. This new image-based workflow provides insights into fracture-matrix transport processes and lays the foundation for future research on coupled transport, reaction, and mechanical processes in naturally fractured rocks.
Article
Engineering, Environmental
Barbara F. Esteves, Jennifer L. Druhan, Adam D. Jew
Summary: This study combines experimental data and numerical modeling to understand the geochemical behavior of barite accumulation in shale oil and gas reservoirs. A pH-dependent kinetic model for barite precipitation is proposed based on experimental evidence, providing a reliable tool to predict and mitigate secondary mineral accumulation in unconventional shale reservoirs.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
