Articles tagged with Tomography
A team of researchers found evidence that solar wind altered the chemical composition of ancient asteroid grains, producing water molecules and providing a possible source for Earth's oceans. The discovery could help future space missions find sources of water on airless worlds.
Researchers used a powerful X-ray technique to identify nanoparticles in the wood of King Henry VIII's favorite ship, the Mary Rose. The findings reveal previously undetected products that could cause damage to the historic vessel.
Optical coherence tomography (OCT) has significant growth potential across various medical applications, including cardiology and dermatology. Miniaturized OCT systems are expected to revolutionize healthcare with compact, mobile, and cost-effective devices.
Researchers at Helmholtz-Zentrum Berlin have achieved a new world record in materials research by using X-ray microscopy to create 1000 three-dimensional images per second. This allows for the non-destructive study of fast processes in materials, enabling researchers to gain insights into material properties and behavior.
Researchers have discovered a new technique to locate the diffusion wake's signal in the quark-gluon plasma, a subatomic soup that flowed like a friction-free fluid after the Big Bang. This breakthrough may help scientists understand how matter emerged from this perfect fluid.
Researchers from Skoltech and KU Leuven used machine learning to reconstruct 3D micro-CT images of fibrous materials, overcoming the difficulties faced by humans in analyzing these complex materials. The team employed GANs to fill a gap in available inpainting tools, enabling precise material analysis and simulation.
Scientists at the Paul Scherrer Institute have developed a new experimental method to investigate the ageing process of vanadium phosphorus oxides (VPO) catalysts. The method allows for precise measurement of chemical properties in three dimensions, revealing changes in the material's structure and chemistry over time.
Researchers at KTH Royal Institute of Technology unveiled a new scanning technology that can detect small amounts of nuclear materials in airports and seaports. The Neutron-Gamma Emission Tomography (NGET) system can pinpoint the origin of neutron and gamma ray emissions from weapons-grade plutonium and other special nuclear materials.
Geophysicists at St. Petersburg State University have developed an algorithm to combine electrical resistivity tomography (ERT) and radiomagnetotelluric (RMT) methods for more accurate subsurface imaging. The joint inversion of CSRMT and ERT data provides a closer match to borehole data, improving the accuracy of geophysical exploration.
The Tomographer algorithm transforms gene-sequencing data into spatially resolved images, mapping gene expression patterns across tissues. By analyzing tissue strips and mRNA measurements, the algorithm reconstructs spatial gene-expression patterns in tissues like the brain of the Australian Bearded Dragon.
Researchers at MIT have developed a dynamical machine learning approach to tackle the challenge of reconstructing object interiors from limited-angle data. The method exploits sequential information to improve reconstructions, achieving promising results in weak and strong scattering conditions.
The new guidelines recommend yearly low-dose CT scans for Americans aged 50-80 with a 20 pack-year smoking history or those who quit less than 15 years ago. The expanded criteria aim to reduce lung cancer disparities in Black people and women.
Physicists at the University of Queensland have created a new method for finding unknown quantum states, called self-guided tomography, which enables them to locate quvigints more quickly and accurately in high dimensions. This technique uses machine learning to pick directions, collect data, and process it to find the target state.
Researchers from Queen Mary University of London used a high-sensitivity X-ray scanner to 'virtually unfold' and read an unopened 17th-century letter, preserving its physical evidence. The team discovered the contents of a letter dated July 31, 1697, which provides insight into the lives of ordinary people during turbulent European his...
A research team observed internal evolution of materials in solid-state lithium batteries using X-ray tomography. The operando synchrotron imaging revealed how dynamic changes at electrode interfaces determine battery behavior. Understanding these dynamics is crucial for improving the reliability and performance of solid-state batteries.
Researchers at the University of Tartu are developing a new large-scale prototype of a cosmic-ray tomography device to detect illegal goods in cargo, making security checks faster and safer. The technology uses safe natural radiation that passes through us every day, allowing for efficient customs controls.
Researchers at ESRF and UCL are developing a transformational X-ray tomography technology to scan whole human bodies with unprecedented resolution. They aim to enable cellular-level imaging, which could help understand complex diseases like COVID-19.
A $22.7 million NIH grant will create a national research hub at UW-Madison, providing access to cutting-edge cryo-EM and cryo-ET technologies for scientists across the US. The center aims to train a new workforce and improve these imaging techniques, which hold potential for breakthroughs in medicine and life sciences.
Researchers developed a scalable quantum state verification (QSV) method for entangled states using nonadaptive local measurements. The results demonstrate the efficiency and precision of QSV in characterizing quantum states, particularly for multipartite entangled states.
Researchers at University of Illinois and Colorado State University developed a new 3D imaging technique called harmonic optical tomography, which uses holographic information to generate microscopic images of tissues. The technique has potential applications in medical diagnostics, finding cracks in oil wells and airplane wings.
Researchers developed a new 3D imaging technique called harmonic optical tomography, which uses holographic information to generate 3D images of biological samples. This technique has the potential to assist with cancer and disease diagnoses by providing critical information on tissue structure and collagen fiber orientation.
Researchers from University of California, San Francisco and San Francisco Veterans Affairs Medical Center discuss early studies on using chest computed tomography for COVID-19 detection. They stress the need to avoid rushing science and overinterpreting preliminary data.
Researchers use machine learning to accelerate analysis of buried interfaces and edges in materials, creating stronger, more energy-efficient materials. The technique pairs atom probe tomography with machine learning to extract composition profiles and compare them to actual ground truth.
Scientists developed SR-FACT microscopy, combining label-free ODT and two-dimensional fluorescence microscopy to visualize cellular environment. The technique revealed novel subcellular structures like dark-vacuole bodies interacting with organelles.
A team of researchers used a virtual unrolling technique to analyze a lithium battery's electrode layers, revealing unseen trends in performance degradation. By combining X-ray and neutron tomography with a mathematical model, the team gained a fuller understanding of how the battery works and how it degrades over time.
A new quantum process tomography method based on convex optimization effectively characterizes quantum channels, revealing their true action with high accuracy. The method demonstrates excellent performance in both unitary and non-unitary quantum channels, achieving up to 99.5% accuracy.
A team of researchers investigated electrode surfaces during charging and discharging using X-ray and neutron tomography methods. They found deformations, discontinuities, and areas with low electrolyte levels that affect battery performance. The analysis allows for the development of strategies to improve lithium battery design.
Researchers at Paul Scherrer Institute have improved a method for small angle X-ray scattering to investigate fibre orientation in composites, enabling faster analysis with conventional X-ray tubes. This innovation has potential applications in medicine and security.
The new special research collection, 'Current Techniques in Morphology,' highlights the impact of advances in technology on the study of insects. The collection features six articles illustrating innovative methods for analyzing insect anatomy and phylogenetics.
Researchers visualize dynamic water transport in soil and roots using neutron tomography, gaining insights into efficient water use in crop cultivation. The technique enables faster imaging, overcoming previous limitations to study rapid processes.
Researchers developed a new method using frequency domain measurement in functional near infrared spectroscopy (fNIRS), improving image quality and spatial resolution. This innovation enables enhanced brain imaging with greater depth sensitivity, paving the way for more accurate neuroimaging applications.
Scientists have developed a new imaging method called tomoscopy using synchrotron radiation to observe the foaming of liquid metals in great detail. This technique allows for the analysis of dynamic processes with high temporal resolution, providing insights into material distribution and pore formation.
Researchers have developed a new terahertz imaging technique that can detect subsurface insect damage in wood, allowing for early detection of infestations. The technique uses terahertz time-of-flight tomography to identify damage caused by insects like the typographer beetle, which infects spruce and other coniferous trees.
Researchers at the University of Portsmouth used synchrotron X-ray computed tomography to examine the performance of four different bone-biomaterial systems. They found that strain can be used to understand and potentially predict clinical outcomes of biomaterials in a living body.
A study published in Academic Emergency Medicine found that half of syncope patients undergo CT head scans, yielding a diagnostic rate of 1.2% to 3.8%. The authors caution against indiscriminate use and recommend future studies to develop a prediction tool for optimal CT head use.
Researchers at University of Cologne and Bonn developed a method to visualize fine surface structures using gold-coated samples in computer tomography. This technique allows for detailed analysis of organisms with previously invisible features, with applications in biology, taxonomy, and education.
The researchers developed a method for identifying the location of point-like scatterers based on fluctuations in physical properties, such as Lame parameters and mass density. This technique can improve tomography efficiency for seismic and electromagnetic exploration in geophysics and nondestructive testing of materials.
Scientists from Swansea University and international partners use x-ray and neutron imaging to assess fusion component robustness, yielding valuable data for development. The research aims to harness nuclear fusion safely and efficiently, overcoming temperature challenges in extreme environments.
Researchers have developed two new approaches to 3D imaging with X-rays, enabling unprecedented detail in disease-screening, materials development, and structural information of opaque objects. The methods, including ghost imaging and single-shot techniques, reduce X-ray doses and destroy samples, paving the way for cheaper, more readi...
A team of scientists used CT imaging to identify a new Panamanian species of thorn snail, Carychium panamaense. The study revealed details about the snail's shell and its potential for conservation.
A study found that despite a well-designed low-dose computed tomography (LDCT) screening program, only 77.6% of eligible veterans underwent annual repeat scans. This highlights the need for improved adherence to lung cancer screening to maximize mortality benefits and cost-efficacy.
Purdue University researchers are developing a photoacoustic tomography system that provides real-time compositional information of body tissue without contrast agents. The technology has the potential to detect or monitor diseases such as cardiovascular disease, diabetes, and cancer.
Scientists at the Helmholtz-Zentrum Berlin have developed an ultra-stable turntable to capture fast 3D tomographic images at a rate of approximately 2000 projections per second. This breakthrough enables detailed analysis of material processing, such as pore formation in metallic foams.
Researchers established zebrafish mutants of four PIH-protein genes and found specific dynein subtypes are required for each PIH protein's function. The study demonstrates distinct roles of PIH proteins in axonemal dynein assembly, which may explain cilia motility defects.
Researchers use neutron tomography to study teeth, root balls, batteries, and fuel cells with improved spatial resolution and faster image acquisition. This non-destructive method provides valuable information for optimizing material design.
COSMIC, a next-generation X-ray beamline, enables scientists to probe active chemistry and electronic properties at the nanoscale. It successfully demonstrated ptychographic computed tomography that mapped lithium-ion battery reactions in 3D.
A new computer program enables accurate pre-biopsy preparation for lung diseases by visualizing patient airways in 3D. Transbronchial biopsies have shown increased accuracy from 53% to 88% using this technology.
Researchers use GIRI to deconstruct rock samples and create three-dimensional digital versions of fossils, allowing for accurate analysis without human bias. This technology has enabled scientists to reevaluate the role of ancient organisms in shaping early ecosystems.
Prof Alba-Tercedor collaborated with BUF to create high-resolution microtomography images of tropical longhorn beetle species and darkling beetle Zophobas morio, used in the film's photorealistic models. The results demonstrate microtomography's value for reconstructing tiny animals' microscopic structural details.
Researchers used 3D digital models to reconstruct Cloudina fossils, finding they were detritus and not the architects of early animal reefs. The study suggests reef building likely emerged around 20 million years later than initially thought.
A new staining method allows specialists to investigate three-dimensional tissue samples using the Nano-CT system, delivering resolutions of up to 100 nanometers. The technique is time-efficient and compatible with conventional methods, enabling enhanced insights into tissue distribution and microscopic origins of diseases.
A US research team has successfully imaged excited quantum dots at multiple orientations using a new technique called single molecule absorption scanning tunneling microscopy (SMA-STM). This allows for the visualization of defects in quantum dots, which can be characterized and precisely controlled to improve their performance.
Researchers at Baylor College of Medicine developed a new automated method that significantly reduces the time to dissect the 3D structure of a single cell, from one week to about an hour. This enables the detailed study of cellular processes and disease, leading to a better understanding of cellular architecture and structures.
KAUST researchers develop a tomographic PIV system using four low-cost smartphones and colored backlighting, enabling quantitative flow visualization. The system compares well with commercial equipment, with deviations in circulation flow of less than 8%, and holds promise for various applications involving turbulence.
Soil scientists have developed a new method to observe water transport in soil and plant roots, enabling the first-ever 3D mapping of this process in just 10 seconds. This breakthrough technology could also be applied to study fuel cells, batteries, and construction materials.
A team of UCSB researchers found that aggregating individual responses from multiple observers improves visual search performance, especially when the object is hard to detect. This approach leverages the high confidence of individuals who directly gaze at the target.
Researchers from TUM develop new algorithm to reconstruct 4D point clouds of cities from satellite images, enabling early detection of dangers like subsidence and collapse. The method improves precision on a fraction of the radar wavelength, allowing for monitoring of urban growth and development.
A new study uses synchrotron tomography to create high-quality 3D models of well-preserved food residues in 230 million-year-old fossil faeces. The technique reveals detailed information about the diet and lifestyle of ancient animals, providing insights into the ecosystem.
Researchers evaluated macular changes using spectral domain type optic coherence tomography in 63 eyes of patients with acute NAION, finding normal posterior pole in 33.3% and subretinal fluid in 34.9%. The study suggests that macular OCT can identify coexistent macular abnormalities and monitor disease progression.
Recent advancements in tomographic imaging have improved V/Q scan sensitivity for pulmonary embolism (PE), but also risk revealing small, clinically insignificant PEs. This can lead to overtreatment and defensive medicine practices in the US healthcare system.