Medical imaging is a set of diagnostic techniques that noninvasively visualize internal anatomical structures and physiological processes using diverse physical modalities. Core methods include ionizing-radiation–based techniques (e.g., radiography, computed tomography, nuclear medicine, PET/SPECT), non-ionizing modalities (e.g., MRI, ultrasound, optical imaging), and hybrid systems (e.g., PET/CT, PET/MRI). These techniques exploit contrasts in tissue density, proton properties, acoustic impedance, or radiotracer distribution to generate qualitative and quantitative data. Medical imaging underpins clinical decision-making, image-guided interventions, treatment planning, and longitudinal monitoring, and increasingly incorporates advanced reconstruction algorithms, quantitative biomarkers, and AI-driven image analysis.
While ultrasound has been widely used for medical imaging, it also has a variety of therapeutic applications. The technology could potentially facilitate the release of medication in precise locations for disorders and conditions ...
Bio & Medicine
Dec 23, 2024
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How can medicines be directed to precise locations within the body where they need to act? Scientists have been researching this question for a long time. An example would be delivering cancer drugs directly to a tumor so ...
Bio & Medicine
Dec 10, 2024
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A team of researchers led by Anna-Karin Gustavsson at Rice University has developed an innovative imaging platform that promises to improve our understanding of cellular structures at the nanoscale.
Bio & Medicine
Nov 27, 2024
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A ultrasound technique from the University of Nottingham will allow the production of sharper images inside live cells without causing damage at resolutions that were previously unattainable.
Optics & Photonics
Nov 22, 2024
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Researchers at the University of Ottawa have made a breakthrough in heart disease diagnostics. They have developed a new type of contrast agent for a medical imaging technique called intravascular optical coherence tomography ...
Bio & Medicine
Oct 28, 2024
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An Aston University researcher has developed a new technique using light that could revolutionize non-invasive medical diagnostics and optical communication. The research showcases how a type of light called the orbital angular ...
Optics & Photonics
Oct 25, 2024
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Magnetic resonance imaging (MRI) has long been a cornerstone of modern medicine, providing highly detailed images of internal organs and tissues. MRI machines, those large, tube-shaped magnets commonly found in hospitals, ...
Optics & Photonics
Oct 16, 2024
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New research in quantum entanglement could vastly improve disease detection, such as for cancer and Alzheimer's disease.
Optics & Photonics
Oct 14, 2024
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A team of researchers from the Keck School of Medicine of USC and California Institute of Technology (Caltech) have developed a potential new way to measure a person's stroke risk that is cost-effective and noninvasive, akin ...
Optics & Photonics
Sep 30, 2024
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In a study published July 29 in Advanced Materials, University of Texas at Dallas researchers found that X-rays of the kidneys using gold nanoparticles as a contrast agent might be more accurate in detecting kidney disease ...
Bio & Medicine
Sep 21, 2024
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