• Recently, optical coherence tomography angiography (OCTA) has been introduced as a novel depth-resolved non- invasive technique of retinal vascular imaging. (frontiersin.org)
  • Both groups underwent an optical coherence tomography angiography (OCTA) exam, a non-invasive imaging technique that examines blood vessels in the eye, and a carotid ultrasound (an imaging test that looks at the arteries delivering blood to the brain and head) to calculate carotid IMT. (lupus.org)
  • Optical coherence tomography angiography (OCTA) is a non-invasive imaging modality that can acquire high-resolution volumes of the retinal vasculature and aid the diagnosis of ocular, neurological and cardiac diseases. (paperswithcode.com)
  • The congress includes a two-day symposium - Medical Laser Applications 2009 - dedicated to the use of optical techniques for diagnosis and treatment of disease. (optics.org)
  • Current effort in our group is directed towards spectroscopic imaging for cancer diagnosis and investigation of microscopic details in porous materials. (uiowa.edu)
  • Optical spectroscopy provides a promising alternative or supplemental to histopathology, the standard method of cancer diagnosis in clinics. (uiowa.edu)
  • Optical methods are less invasive, inexpensive, and the diagnosis can be in situ, without time delay. (uiowa.edu)
  • To be a successful technique for cancer diagnosis, an optical method is required to provide a high contrast between normal/hyperplastic and adenomatous/adenocarcenomatous tissues. (uiowa.edu)
  • Of the 50 patients evaluated, 18 had cervical intraepithelial neoplasia (CIN) II,III, 14 had CIN I, 13 had metaplasia/inflammation, two had invasive squamous cell carcinoma of the cervix, and three had a diagnosis of Paget's disease of the vulva. (bmj.com)
  • Attempts have been made to develop non-invasive imaging techniques for the diagnosis of GCA, in particular, ultrasonography, but the sensitivity has been disappointing. (lu.se)
  • Our aim is to develop and implement non‐invasive imaging techniques for the diagnosis of GCA with high sensitivity and specificity, in order to avoid surgical excision and, at the same time, enable multiple examinations and treatment follow‐up. (lu.se)
  • The purpose of this project is to develop and evaluate three non-invasive examination methods for the diagnosis of breast tumors, namely photoacoustics, diffuse reflectance spectroscopy and ultrasound-based tissue characteristics. (lu.se)
  • Diagnosis is clinical and confirmed by angiography, ultrasonography, or other imaging tests. (msdmanuals.com)
  • He is focusing on the development of new non-invasive optical diagnostic and imaging techniques and their applications in medicine and biology and health care industries. (otago.ac.nz)
  • This project will also explore novel applications of this non-invasive imaging modality in the management of patients with DR and DME. (frontiersin.org)
  • More recently, a subset of OCT, the OCT Angiography is a modality that images integrity of the vasculature in the retina and optic nerve mainly assessing the blood perfusion. (aao.org)
  • One of the challenges of optical modality is light delivery deep into the brain tissue in a non-invasive or at least minimally invasive way. (ieee.org)
  • Different imaging modalities have been used to diagnose DR and DME, including invasive and non-invasive angiography. (frontiersin.org)
  • The treatment of non-muscle-invasive (Ta, T1, carcinoma in situ [CIS]) and muscle-invasive bladder cancer should be differentiated. (medscape.com)
  • The treatment of non-muscle-invasive bladder cancer (Ta, T1, carcinoma in situ [CIS]) begins with transurethral resection of bladder tumor (TURBT). (medscape.com)
  • A mission to "make pediatric surgery more precise, less invasive, and pain free" drives investigators at the Sheikh Zayed Institute (SZI). (childrensnational.org)
  • This newly developed approach represents a significant advance in molecular biology, opening the door to less invasive and more precise analyses of pathogenic microorganisms present in human host cells. (pasteur.fr)
  • An optical biopsy allows clinicians to view tissues in real-time within their native environment, and avoids the need to remove tissue and analyze it in a lab elsewhere. (medgadget.com)
  • Minimally invasive procedures such as biopsy, drainage, or ablation (removal of tissue) are typically done under x-ray imaging to enable visualization of the site. (childrensnational.org)
  • It has the potential to be a true optical biopsy. (bmj.com)
  • Optical biopsy of the temporal artery using diffuse reflectance spectroscopy (DRS). Photo: Reistad 2017. (lu.se)
  • iii) cell or tissue sampling, usually with a core needle biopsy (a so-called invasive examination). (lu.se)
  • A non-invasive method that can provide equal information with a biopsy would mean avoiding these risks. (lu.se)
  • The two principal treatment choices in muscle-invasive bladder cancer are radical cystectomy and transurethral resection of bladder tumor (TURBT) followed by concurrent radiation therapy and systemic chemotherapy (trimodality therapy). (medscape.com)
  • Chedgy and Black propose that radical cystectomy should be considered the gold-standard treatment for muscle-invasive bladder cancer. (medscape.com)
  • In contrast, Mitin recommends considering trimodality therapy as the first option for patients with muscle-invasive bladder cancer, with cystectomy reserved for patients who are unable or unwilling to undergo bladder preservation or for salvage in the case of local recurrence. (medscape.com)
  • In the future, treatment selection for muscle-invasive bladder cancer is likely to be based on testing of tumors for biomarkers that indicate treatment sensitivity. (medscape.com)
  • For example, Gereon Hüttmann, from the University of Lübeck, told delegates about the use of OCT for 3D intraoperative imaging of tissue structures. (optics.org)
  • Photoacoustic imaging, a fascinating technique relying on ultrasound generation upon the absorption of a light pulse, has been developed to overcome this issue, enabling to probe optical absorption contrast at large depths in biological tissue. (fresnel.fr)
  • The new sensors with increased sensitivity will be tested by imaging phantom samples and fixed tissue. (fresnel.fr)
  • A new approach to micro-endoscopy developed by RMIT researchers may unlock 3D views of imaged tissues, providing more information about the tissue of interest for clinicians. (medgadget.com)
  • Optical Coherence Tomography, abbreviated OCT, is a non-invasive, contact-free imaging technique to detect and monitor morphological changes of ocular tissue. (leica-microsystems.com)
  • Using low-power, near-infrared light, the OCT system generates high-resolution, volumetric images of the internal tissue microstructures of cornea and retina. (leica-microsystems.com)
  • Chamanzar and Scopelliti explain in their paper that biological tissue, being a turbid (or dense and opaque) medium, limits the possibilities of optical methods. (medicalnewstoday.com)
  • Specifically, the tissue is made of large particles and membranes and restricts the depth and resolution of optical imagery, "especially in the visible and near infrared range of the spectrum. (medicalnewstoday.com)
  • We used ultrasound waves to sculpt a virtual optical relay lens within a given target medium, which, for example, can be biological tissue," says Chamanzar. (medicalnewstoday.com)
  • Therefore, the tissue is turned into a lens that helps us capture and relay the images of deeper structures. (medicalnewstoday.com)
  • Optical coherence tomography (OCT) is a non-invasive technique for cross-sectional tissue imaging. (cstc.ac.th)
  • To overcome this challenge, implantable photonic waveguides such as optical fibers or graded-index (GRIN) lenses have been used to deliver light into the tissue or collect photons for imaging. (ieee.org)
  • Existing large and rigid optical waveguides cause damage to the brain tissue and vasculature. (ieee.org)
  • Dr. Chamanzar will show that ultrasound waves can sculpt virtual graded-index (GRIN) waveguides in the tissue to define and steer the trajectory of light without physically implanting optical waveguides in the brain. (ieee.org)
  • In this novel imaging technique, each tissue location is investigated by two-dimensional fluorescence correlation spectroscopy (2D FCS). (uiowa.edu)
  • In conjunction with tissue spectroscopy, fluorescence imaging and chemical separations are used to elucidate the molecular and morphological changes in tissue upon cancerous transformation. (uiowa.edu)
  • Raster-scan optoacoustic mesoscopy (RSOM) is a powerful, non-invasive optical imaging technique for functional, anatomical, and molecular skin and tissue analysis. (paperswithcode.com)
  • Specifically, Bioluminescence Imaging is a sensitive non-invasive and non-contact optical imaging technique that is able to detect distributed (biologically informative) visible and near-infrared activated light sources within tissue, providing information about tissue function. (birmingham.ac.uk)
  • The purpose of this study was to understand the capabilities and utility of optical coherence tomography (OCT) in characterizing tissue in patients with precancer and cancer of the uterine cervix and vulva. (bmj.com)
  • OCT is an optical technique that uses low-coherence interferometer to develop a two-dimensional image of optical scattering from internal tissue microstructure. (bmj.com)
  • It is of high importance to develop and evaluate non-invasive methods that can provide a traditional anatomical and functional image in a manageable and time-efficient manner, but also information about the molecular composition of the tissue. (lu.se)
  • In this project we will evaluate three non-invasive optical methods that can contribute to improved breast cancer diagnostics, namely photoacoustics (PAI - photoacoustic imaging), diffuse reflectance spectroscopy (DRS) and ultrasound-based tissue characteristics (CFS). (lu.se)
  • Ultrasound (left) and PAI (right) images of normal breast tissue. (lu.se)
  • The heart of the book covers the essential topics of tissue optics, as well as optical imaging system design concepts. (lu.se)
  • This entry-level textbook, covering the area of tissue optics, is based on the lecture notes for a graduate course (Bio-optical Imaging) that has been taught six times by the authors at Texas A&M University. (lu.se)
  • In terms of imaging diagnostics (ii), mammography, magnetic resonance imaging (MRI) and ultrasound are effective modalities, but they have their limitations. (lu.se)
  • Ultrasound, DRS and PAI differ from other imaging modalities in that the techniques do not use radiation (like X-ray, CT and mammography), magnetic field (MRI) or radioactive isotopes (SPECT / PET). (lu.se)
  • The imaging modalities include ballistic imaging, quasi-ballistic imaging (optical coherence tomography), diffusion imaging, and ultrasound-aided hybrid imaging. (lu.se)
  • The technology could pave the way for minimally invasive 3D optical biopsies. (medgadget.com)
  • The exciting thing is that our approach is fully compatible with the optical fibre bundles that are already in clinical use, so it's possible that 3D optical biopsies could be a reality sooner rather than later," said Brant Gibson, another researcher involved in the study. (medgadget.com)
  • Analysis of the OCT images showed a repetitive pattern that represented normal squamous epithelium of the cervix in 100% of the normal biopsies. (bmj.com)
  • BibbInstruments - develops flexible endoscopic instruments for enhanced minimally invasive biopsies, based on the patented EndoDrill ® -technologies. (lu.se)
  • The techniques of choice are Raman and diffuse reflectance (also known as FORS) spectroscopies, multi-or hyper spectral imaging and X-ray fluorescence, XRF. (iop.org)
  • We are developing spectrally-resolved fluorescence correlation imaging for cancer detection. (uiowa.edu)
  • Using imaging fluorescence correlation spectroscopy and single molecular spectroscopy, we are investigating interfacial behaviors inside nanometer sized pores. (uiowa.edu)
  • Electroencephalogram (EEG) data recorded simultaneously with functional magnetic resonance imaging (fMRI) suffer from severe artefacts. (researchgate.net)
  • Optical techniques have been recently developed for structural and functional imaging as well as targeted stimulation of neural circuits. (ieee.org)
  • As an experimentalist interested in biomedical applications, I have tested the technique for several medical applications, including detection of breast cancer, assessment of peripheral vascular disease, non-invasive blood glucose monitoring, brain oxygenation monitoring, brain functional activity, and neurovascular coupling investigation. (harvard.edu)
  • MRI certainly provides dynamic and functional information (in addition to the anatomical image), but it is characterized by its high cost and long examination time. (lu.se)
  • Insurance and conservation issues prevent the transport of precious books to scientific facilities for analysis, and the moratorium on sampling results in the fact that only optical spectroscopy (or those using electromagnetic radiation in a non-contact, non-invasive manner) can be used. (iop.org)
  • We also work with correcting and analysing spectra from optical photothermal infrared spectroscopy (O-PTIR), a new and powerful technique used at CEC. (lu.se)
  • Ziolkowska and co-workers obtained 2D OCT images of healthy skin, actinic skin lesions with different degrees of dysplasia, and basal-cell carcinoma lesions from 10 patients. (optics.org)
  • Basal cell carcinoma can be diagnosed more accurately than with either clinical or dermoscopic examination using a novel imaging technique according to data presented at the 31st European Academy of Dermatology and Venereology (EADV) Congress by researchers from the Department of Dermatology at the Hôpital Erasme, Université Libre de Bruxelles, Brussels. (hospitalhealthcare.com)
  • While optical microscopy techniques remain paramount for studying biological systems (using photons allows for relatively non-invasive interaction to the biological system being studied), they cannot directly detect critical components of physiology, such as primary metabolism and signaling factors. (sciencedaily.com)
  • [9] OCT has therefore emerged as a non-invasive and relatively inexpensive technique for capturing loss of central nervous system axons and neurons. (aao.org)
  • Professor Clive Ballard, of The Alzheimer's Society, said: "This exciting study uses a new imaging technique which has enormous potential as a relatively inexpensive and non-invasive way to chart the growth of amyloid, the protein at the core of the plaques which develop in the brain in a person with dementia. (bbc.co.uk)
  • This novel study uses two non-invasive techniques, optical coherence tomography (OCT) and digital image correlation (DIC), to measure properties of the index finger of a 25. (whiterose.ac.uk)
  • 18: Observation of Thermal Strain on Electronic Packages Using Digital Image Correlation. (gale.com)
  • 20: Strain Measurement at Temperatures Up to 800 °C Utilizing Digital Image Correlation. (gale.com)
  • 22: Stress Analysis of a Metal-Plate-Connection in a Beam Under 3-Point-Bending Using Digital Image Correlation. (gale.com)
  • Maysam Chamanzar, an assistant professor of electrical and computer engineering at Carnegie Mellon University in Pittsburgh, Pennsylvania, and Matteo Giuseppe Scopelliti, a doctoral researcher in the same department, have devised a noninvasive ultrasound imaging technique that promises to replace the endoscope. (medicalnewstoday.com)
  • In this talk, Dr. Maysam Chamanzar will discuss his research on developing next generation optical neural interfaces. (ieee.org)
  • Then, Dr. Chamanzar will discuss his recent work on developing a novel complementary approach to guide and steer light in the brain using non-invasive ultrasound. (ieee.org)
  • Researchers from the Institut Pasteur and CNRS have set up a new optical microscopy approach that combines two recent imaging techniques in order to visualize molecular assemblies without affecting their biological functions, at a resolution 10 times better than that of traditional microscopes. (pasteur.fr)
  • This non-invasive technique allows to observe proteins without destroying or altering their biological functions. (pasteur.fr)
  • Photonics based imaging is a widely utilised technique for the study of biological functions within pre-clinical studies. (birmingham.ac.uk)
  • After the fundamentals of photon transport in biological tissues are established, various optical imaging techniques for biological tissues are covered. (lu.se)
  • At our microscopy platform in Lund, you meet personnel with expertise and long experience working with biological material and microscopy, imaging, and analysis. (lu.se)
  • This study demonstrates that OCTA could be a non-invasive procedure to evaluate CV involvement in people with SLE at the preclinical stage. (lupus.org)
  • Encouraged by our method's competitive quantitative and superior qualitative performance, we believe that it constitutes a versatile tool to advance the quantitative analysis of OCTA images. (paperswithcode.com)
  • There are various methods of breast imaging using a variety of technologies as described in detail below. (wikipedia.org)
  • Tao notes that in principle, plasmonic electrochemical imaging-a rapid and non-invasive technique offering the combined benefits of optical and electrochemical detection-may be applied to other phenomena for which conventional electrochemical detection methods are currently used. (phys.org)
  • Endoscopy is currently one of the most common methods for medical imaging. (medicalnewstoday.com)
  • For the first time, researchers have combined these two methods in order to obtain high-resolution images of molecular structures in either fixed or living cells. (pasteur.fr)
  • Current non-invasive methods for assessing the nutrient status of crops deal in most cases with nitrogen (N) deficiency only and optical sensors to diagnose N deficiency, such as chlorophyll meters or canopy reflectance sensors, do not monitor N, but instead measure changes in leaf spectral properties that may or may not be caused by N deficiency. (mdpi.com)
  • The work demonstrates that hyperspectral surface fluence images of both block and mouse shaped phantom due to internal light sources could be obtained at 30% of the time and measurements it would take to collect the data using conventional raster scanning methods. (birmingham.ac.uk)
  • Three-dimensional molecular imaging methods have recently been considered as an attractive approach to overcome the limitations of oncolytic therapy. (biomedcentral.com)
  • Consequently, finding novel methods for increasing the efficiency of tumor imaging and treatment is of great importance [ 1 , 2 ]. (biomedcentral.com)
  • Advancement of Optical Methods in Experimental Mechanics: Proceedings of the 2013 Annual Conference on Experimental and Applied Mechanics, the third volume of eight from the Conference, brings together contributions to this important area of research and engineering. (gale.com)
  • 12: The Optical Methods of Caustics and Photoelasticity: A Comparison. (gale.com)
  • Thus, several investigations encourage non-invasive methods and that have high levels of reliability, so that they can become alternative to radiologic examination 10,11 . (bvsalud.org)
  • Spectroscopic imaging methods have many applications in both environmental science and medicine. (lu.se)
  • If left untreated, invasive aspergillosis can approach 100% mortality. (medscape.com)
  • If invasive aspergillosis is suspected, extensive diagnostic workup is necessary, and treatment should be initiated early to reduce morbidity and mortality. (medscape.com)
  • If invasive pulmonary aspergillosis is suspected, the Infectious Diseases Society of America (IDSA) recommends performing CT scanning of the chest, regardless of chest radiography findings. (medscape.com)
  • A. fumigatus is patients with invasive aspergillosis were admitted directly the most common cause of invasive aspergillosis, a condition from home. (cdc.gov)
  • and §National Institutes of Health, Bethesda, as a causative agent of invasive aspergillosis. (cdc.gov)
  • Researchers at RMIT University in Australia have developed a technique to allow an optical fiber probe to obtain 3D images of tissues deep within the body. (medgadget.com)
  • At present, optical probes are used in medicine, but they typically provide a two-dimensional view of the tissues they image. (medgadget.com)
  • Optoacoustics provides high optical contrast without the handicap of poor resolution in imaging of optically turbid tissues. (videolectures.net)
  • The talk will give an overview of the possibilities and limitations of optoacoustic imaging in turbid tissues, especially in terms of image contrast and depth resolution. (videolectures.net)
  • With his team at UCLA, his most recent work was investigating opportunities to further reduce invasiveness of cardiovascular, ophthalmologic, orthopedic, urological, and neurosurgical surgeries by utilizing terahertz imaging, laser-based destruction of bacteria, MRI-Ultrasound image fusion combined with targeted laser ablation, and advanced optical diagnostics. (ucla.edu)
  • Thanks to optics and photonics, there has been a huge revolution in microscopes, cameras, and different optical techniques that allow for things like minimally invasive surgeries and diagnostic techniques. (medlineplus.gov)
  • While tumor imaging and radiotherapy strategies are crucial for tumor identification and treatment, the presence of metastasis and radiation resistance has reduced the efficacy of treatment in cancer patients. (biomedcentral.com)
  • Multi-lesion radiomics of PET/CT for non-invasive survival stratification and histologic tumor risk profiling in patients with lung adenocarcinoma. (cdc.gov)
  • The combined OCT-microscope system enables visualization of 840-nm OCT images during surgical procedures, displayed via a dedicated video ocular in the microscope. (optics.org)
  • Their custom-built microscope imaged and recorded the resulting lightning storm in the fish's brain in real time. (acs.org)
  • In our laboratories, you can use both standard microscope techniques, like scanning electron microscopy (SEM), transmission electron microscopy (TEM) and confocal laser scanning microscopy (CLSM), as well as infra-red based analysis techniques and micro-computed tomography (micro-CT). (lu.se)
  • In the current study, researchers found that using a new, non-invasive skin imaging technology called line-field confocal optical coherence tomography (LC-OCT), which gives detailed 3D images at cellular level, significantly increased diagnostic accuracy. (hospitalhealthcare.com)
  • Confocal imaging provides an excellent tool for investigating microscopic origins of band broadening and probing surface adsorption that is responsible for peak tailing. (uiowa.edu)
  • Polarity Distribution in C18 Stationary Phase Probed by Confocal Ratiometric Imaging of Nile Red. (uiowa.edu)
  • OCT employs interferometry, in which waves are superimposed in order to extract information, to create cross-sectional images. (leica-microsystems.com)
  • The researchers detail their novel technique in the journal Light: Science and Applications . (medicalnewstoday.com)
  • The next step for the team will be to develop a larger chip that will enable larger colonies to be imaged at higher spatial and temporal resolutions. (sciencedaily.com)
  • The methodcombines the spatial resolution of optical detection with the high sensitivity and selectivity of electrochemical recognition. (phys.org)
  • In order to enable timely actions to prevent major losses of crops caused by lack of nutrients and, hence, increase the potential yield throughout the growing season while at the same time prevent excess fertilization with detrimental environmental consequences, early, non-invasive, and on-site detection of nutrient deficiency is required. (mdpi.com)
  • In order to prevent malignant transformation of these precursor lesions, multiple screening and detection techniques have been developed to address this problem. (medscape.com)
  • We therefore developed optical sensors of ultrasound to overcome this issue [1]. (fresnel.fr)
  • You will develop a wide-field interrogation system of the optical ultrasound sensors, as well as implement data acquisition and image reconstruction approaches based on compressive sensing. (fresnel.fr)
  • Here, we provide an overview of pre-clinical and clinical applications of hNIS-based molecular imaging to evaluate virotherapy efficacy. (biomedcentral.com)
  • This method can revolutionize the field of biomedical imaging," he adds. (medicalnewstoday.com)
  • Dr. Tromberg uses the science of optics and photonics (light and light-based technologies) to develop new techniques for biomedical imaging and therapy. (medlineplus.gov)
  • I came in with lasers, optics, and fiber optics (which take light from one place to another), but my gateway to biology was in cancer at the National Cancer Institute's biomedical imaging program. (medlineplus.gov)
  • Biomedical Engineering: Health Care Systems, Technology and Techniques is an edited volume with contributions from world experts. (lu.se)
  • For example, mammography only provides a structural / anatomical image and the breast is exposed to ionizing radiation. (lu.se)
  • A study coordinated by Dr Christophe Zimmer(1) (Institut Pasteur/CNRS), in collaboration with Dr Nathalie Arhel(2) within the lab headed by Pr Pierre Charneau(3) (Institut Pasteur/CNRS), shows that the association of two recent imaging techniques helps obtain unique images of molecular assemblies of HIV-1 capsids, with a resolution around 10 times better than that of traditional microscopes. (pasteur.fr)
  • The molecular positions are then calculated with high accuracy by computer programs and compiled into a single high-resolution image. (pasteur.fr)
  • The development of a new optical microscopy approach by the researchers of the Institut Pasteur and CNRS offers unique perspectives for molecular biology. (pasteur.fr)
  • This new imaging technique could become a key tool in the study of numerous microbial complexes and their interactions with host cells at the molecular level. (pasteur.fr)
  • Spectroscopic imaging support is available from CIPA, the imaging processing and analysis infrastructure at Lund University. (lu.se)
  • Using plasmonic electrochemical current imaging, Tao's group examined the electrocatalytic activity of platinum nanoparticles printed in a microarray on a gold thin-film electrode, demonstrating for the first time the feasibility of high-throughput screening of the catalytic activities of nanoparticles. (phys.org)
  • These novel neurophotonic techniques enable high-throughput bi-directional interfacing with the brain to understand the neural basis of brain function and design next generation neural prostheses. (ieee.org)
  • Through judicious design of the spectrometer, selection of the light source, and implementation of mathematical techniques, SDOCT systems can be tailored to provide exceptional images for a wide range of research and clinical applications. (leica-microsystems.com)
  • We could use optical examination to assist the staging of TAO and further provide evidence for clinical decision. (bmj.com)
  • Photoacoustics imaging (PAI) of the vascular network of an arm. (lu.se)
  • The new technique involves processing microscopic images from an optical fiber probe and combining different views within the images to create a 3D reconstruction. (medgadget.com)
  • The image quality depends on a number of factors, including the irradiation geometry and image reconstruction algorithm. (videolectures.net)
  • Consequently, it is essential to resort to more precise imaging techniques, in order to better understand and define the internal structure of such viruses. (pasteur.fr)
  • Human sodium/iodide symporter (hNIS) is considered as one of the most prevalent nuclear imaging reporter transgenes that provides precise information regarding the kinetics of gene expression, viral biodistribution, toxicity, and therapeutic outcomes using the accumulation of radiotracers at the site of transgene expression. (biomedcentral.com)
  • Breakthrough research showcases an innovative imaging technique that uses ultrasound to provide in depth images in a noninvasive way. (medicalnewstoday.com)
  • The operator can then adjust the lens by "changing the ultrasonic pressure waves inside the medium," write the authors, and so take in depth images that were never accessible before, using noninvasive means. (medicalnewstoday.com)
  • How great would it be if this could be done in a noninvasive manner, or as minimally invasive as possible? (medscape.com)
  • This may result from magnetic susceptibility effects which lead to signal drop-out and image distortion, as well as the perturbation of the radiofrequency fields, which can cause local signal changes and a global reduction in the signal to noise ratio (SNR) of magnetic resonance images. (researchgate.net)
  • Finally, we demonstrate the utility of our algorithm by integrating it with two medical image processing applications that use gradient-based optimization: deep-learning-based blood vessel segmentation, and multimodal registration of the mandible in computed tomography and magnetic resonance images. (paperswithcode.com)
  • In medicine, breast imaging is a sub-speciality of diagnostic radiology that involves imaging of the breasts for screening or diagnostic purposes. (wikipedia.org)
  • A Feature Paper should be a substantial original Article that involves several techniques or approaches, provides an outlook for future research directions and describes possible research applications. (mdpi.com)
  • Moreover, adjusting or reconfiguring the ultrasound waves from the outside can move the lens around inside the medium, allowing it to travel to different regions and take images at different depths. (medicalnewstoday.com)
  • This newly developed approach provides a powerful and non-invasive method to study the structural changes of finger-pad skin during loading and sliding. (whiterose.ac.uk)
  • The new method relies instead on imaging electrochemical reactions optically based on the phenomenon of surface plasmon resonance. (phys.org)
  • SS-OCT offers a non-invasive method for follow-up assessment. (bmj.com)
  • Compressive Sensing (CS) is a method of signal processing that works on the basis that a signal or image can be compressed without important information being lost. (birmingham.ac.uk)
  • The idea is based on the fact that light hits different optical fibers within the fiber bundle at different angles, and by measuring these angles the researchers can infer the 3D structure of the imaged object. (medgadget.com)
  • The researchers, who include PhD students Dan Bellin (electrical engineering) and Hassan Sakhtah (biology), say that this is the first time integrated circuits have been used for such an application -- imaging small molecules electrochemically in a multicellular structure. (sciencedaily.com)
  • J.L. Wang, S.M. Zhu, Y.Y. Lin, S. Svanberg, and G.Y. Zhao, Mosquito counting system based on optical sensing, Applied Physics B 126 doi.org/10.1007/s00340-019-7361-2 (2020). (lu.se)
  • Dr Goldstein told the International Conference on Alzheimer's Disease and Related Disorders in Madrid: "Amyloid in the lens can be detected using extremely sensitive, non-invasive optical techniques. (bbc.co.uk)
  • Aim This study used swept-source optical coherence tomography (SS-OCT) to investigate subfoveal choroidal thickness (SFCT) in patients with thyroid-associated ophthalmopathy (TAO) who displayed different levels of disease activity and severity. (bmj.com)
  • SS-OCT is a useful and non-invasive tool in orbital disease research. (bmj.com)
  • From the other 2 patients, who absence of both superoxide and hydrogen peroxide produc- had no signs and symptoms of invasive fungal disease, E. tion in phagocytes predisposes patients to bacterial and fun- quadrilineata was cultured from respiratory specimens. (cdc.gov)
  • Laser light also plays an important role in many therapeutic techniques, such as photodynamic therapy (PDT), which uses a light-activated drug to kill cancer cells. (optics.org)
  • Non-invasive imaging of neuronal activity with single cell resolution is however limited to shallow depths, due to prominent light scattering beyond one millimeter. (fresnel.fr)
  • Modal structure in optical fibre bundles captures light field information. (medgadget.com)
  • Spectral Domain Optical Coherence Tomography (SDOCT) is a particular implementation of OCT that collects all of the wavelengths of light at the same time using a specially designed spectrometer. (leica-microsystems.com)
  • Such conversion in the vicinity of the electrode affects the plasmon, causing changes in light reflectivity, which the technique converts to an optical image. (phys.org)
  • Optical coherence tomography (OCT) is a non-invasive imaging technique which uses reflected light to create high resolution, two or three dimensional representation of retinal architecture. (aao.org)
  • Image contrast is therefore provided by light absorbing chromophores, either endogenous (such as oxy- or deoxyhemoglobin) or exogenous (e.g. dyes, nanoparticles or quantum dots). (videolectures.net)
  • OCT or Optical Coherence Tomography, is a non-invasive medical imaging technique that uses light waves. (eyeclinic-karachi.com)
  • Reconstructed images of internal light sources using four wavelengths as obtained through CS are presented showing a localisation error of ~3 mm. (birmingham.ac.uk)
  • Additionally, tomographic images of dual-colored sources demonstrating multi-wavelength light sources being recovered are presented further highlighting the benefits of the hyperspectral system for utilising multi-colored biomarker applications. (birmingham.ac.uk)
  • Among the techniques for evaluation of scoliosis, we can highlight the Moiré topography, which bases its analysis through a phenomenon of shadow projection derived from optical, wherein the light projected on the back, passes through a plate and this way lines are formed, first in a reference plane, and then on the body surface, delineating surface topographically 9,13 . (bvsalud.org)
  • It reminded me of our own experience with a technique that tries to correct residual refractive errors: the light-adjustable lens. (medscape.com)
  • You will first simulate various sensor designs to identify the best solutions optimizing the optical and mechanical contributions to the overall sensitivity. (fresnel.fr)
  • This technique has high specificity but low sensitivity. (lu.se)
  • Regional 18F-fluoromisonidazole PET images generated from multiple advanced MR images using neural networks in glioblastoma. (cdc.gov)
  • They found that LC-OCT significantly increased the diagnostic accuracy by 12% compared to dermoscopic examination alone (from 85% up to 97%), which the most commonly used skin cancer diagnostic technique. (hospitalhealthcare.com)
  • We could adapt these technologies for medicine and biology―microscopes, imaging, therapies―but in the early days, the commercial driver was the internet and telecommunication. (medlineplus.gov)
  • However, both the manual and the automated analysis of such images are challenging, because the RSOM images have very low contrast, poor signal to noise ratio, and systematic overlaps between the absorption spectra of melanin and hemoglobin. (paperswithcode.com)
  • The team thought there might be a better way to directly detect small molecules through techniques that employ direct transduction to electrons, without using photos as an intermediary. (sciencedaily.com)
  • European Association of Urology (EAU) and National Comprehensive Cancer Network (NCCN) guidelines for non-muscle-invasive cancer strongly recommend stratifying risk of recurrence and progression and using risk tables to determine appropriate treatment. (medscape.com)
  • In the case of invasive procedures (iii) there is always the risk of minor bleeding or, in the worst case, infection. (lu.se)
  • In the current study, platinum nanoparticles acting as electrochemical catalysts are investigated by means of the new technique, known as plasmonic electrochemical imaging. (phys.org)
  • In this work, we study how well nutrient deficiency symptoms can be recognized in RGB images of sugar beets. (mdpi.com)