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Related Concept Videos

Brain Imaging01:14

Brain Imaging

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Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...
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Magnetic Resonance Imaging01:24

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Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

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Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
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Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

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Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
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Computed Tomography (CT) scan:
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Imaging Studies IV: Magnetic Resonance Imaging01:27

Imaging Studies IV: Magnetic Resonance Imaging

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Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...
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Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging
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Structural and functional imaging of brains.

Zhichao Liu1, Ying Zhu2, Liming Zhang1

  • 1Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241 China.

Science China. Chemistry
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Summary
This summary is machine-generated.

This review overviews advanced imaging and sensing techniques for studying brain structure and function across scales. It highlights methods for visualizing subcellular details and monitoring neural activity and molecular interactions in live brains.

Keywords:
biosensing and bioimagingbrain chemistrybrain functionbrain structurechemical signal

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Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Microscopy and Imaging

Background:

  • Understanding complex brain structures and functions is crucial for deciphering physiological and pathological processes.
  • Subcellular structures in the live brain and the distribution/interactions of functional molecules remain poorly understood.
  • Existing imaging techniques face challenges in resolving fine details and capturing dynamic processes in vivo.

Purpose of the Study:

  • To provide an overview of frontier techniques for multiscale brain imaging, from organelles to the whole brain.
  • To summarize advancements in methods for acquiring brain function data, including electrical and chemical signaling.
  • To highlight emerging technologies for high-resolution, in vivo imaging and sensing in the brain.

Main Methods:

  • Overview of imaging techniques: Magnetic Resonance Imaging (MRI), Computed Tomography (CT), Positron Emission Tomography (PET), serial-section Electron Microscopy (ssEM), Light Microscopy (LM), and Synchrotron-based X-ray Microscopy (XRM).
  • Focus on XRM for high-resolution, fast 3D imaging of large-scale brain tissue.
  • Summary of electrophysiology technologies for single-neuron and in-brain recordings, and development of electrochemical probes and electrochemophysiological microarrays for simultaneous signal recording.
  • Introduction to advanced MRI probes using hyperpolarized techniques and multi-nuclear chemistry.
  • Emphasis on optical probes and instruments, including optophysiological Raman probes and fiber Raman photometry, for live brain imaging and biosensing.

Main Results:

  • Synchrotron-based X-ray microscopy (XRM) offers high resolution and speed for 3D brain imaging.
  • New electrophysiology and electrochemical techniques enable precise neural recordings and molecular determination in vivo.
  • Advanced MRI and optical probes significantly improve contrast, sensitivity, and specificity for brain imaging and biosensing.

Conclusions:

  • Significant progress has been made in developing multiscale imaging and sensing technologies for brain research.
  • These advanced techniques provide unprecedented insights into brain structure, function, and molecular dynamics.
  • Further research is needed to address existing challenges and fully leverage these technologies for understanding brain physiology and pathology.