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.
Using AI to identify wildlife reveals a potential "transferability crisis," researchers say. Marketing for AI imaging systems often suggests that models can easily tackle novel scenarios across ecosystems and settings, much ...
Ecology
Mar 3, 2026
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350
Scores of sea lions continue to beach themselves along the Southern California coastline, stricken with sickness. Toxic algae blooms are to blame, though a mechanical engineering innovation could shift the tide in favor of ...
Biotechnology
Feb 25, 2026
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28
A new study suggests that babies are able to distinguish between the different objects they see around them at 2 months old, which is earlier than scientists previously thought.
Other
Feb 21, 2026
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42
Researchers at Case Western Reserve University have discovered a way to breach one of cancer's most stubborn defenses: the impenetrable fortress that solid tumors build around themselves.
Bio & Medicine
Feb 18, 2026
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58
Going to space is harsh on the human body, and as a new study from our research team finds, the brain shifts upward and backward and deforms inside the skull after spaceflight.
Space Exploration
Feb 14, 2026
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29
Researchers from the University of Tartu Institute of Physics have developed a novel method for enhancing the quality of three-dimensional images by increasing the depth of focus in holograms fivefold after recording, using ...
Optics & Photonics
Feb 13, 2026
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80
A new crew rocketed toward the International Space Station on Friday to replace the astronauts who returned to Earth early in NASA's first medical evacuation.
Space Exploration
Feb 13, 2026
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30
Studying the shape of tissues and organs is critical to understanding how they are formed. Embryonic development happens in three dimensions, but many studies are limited by the use of two-dimensional approaches and images ...
Biotechnology
Feb 5, 2026
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23
Researchers at NYU Abu Dhabi have developed a new light-based nanotechnology that could improve how certain cancers are detected and treated, offering a more precise and potentially less harmful alternative to chemotherapy, ...
Bio & Medicine
Jan 29, 2026
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80
The astronauts evacuated last week from the International Space Station say a portable ultrasound machine came in "super handy" during the medical crisis.
Space Exploration
Jan 22, 2026
0
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