New results in animals highlight a major safety concern regarding a class of magnetic resonance imaging (MRI)
contrast agents used in millions of patients each year, according to a paper published online by the journal Investigative Radiology.
Not exact matches
In the drive to improve early detection and treatment of cancer, a pair of Toronto scientists has developed a unique technology that combines
contrast agents with targeted, long - lasting nano - particles for
use in multiple medical imaging platforms.
If we look at one of the most common ones
used which is called gadolinium which is a
contrast agent that's
used.
According to Kyari, the strategy
used by security
agents to track and nab Evans was confidential information that was known to only him and a few senior officers in the Police force, which was in
contrast to what had filtered into the public domain.
These days, medical X-rays come in multiple formats: plain film
used in dental exams and doctors» offices; fluoroscopy, which bounces a continuous X-ray beam off
contrast agents you've either injected or ingested, providing a moving real - time image of arteries and intestines; and the computed tomography (CT) scan, which couples a powerful computer with a circular array of extremely sensitive detectors to turn X-rays into detailed cross sections of the body.
The MPI that
uses clinically - approved, iron oxide - based MRI
contrast agents is capable of 3D, high - resolution imaging in real time.
The study adds to concerns that repeated
use of specific «linear» - type gadolinium - based
contrast agents (GBCAs) lead to deposits of the heavy - metal element gadolinium in the brain.
«Study highlights «important safety issue» with widely
used MRI
contrast agents.»
Prior to their study with this
contrast agent, Lu's team had conducted studies to determine its clearance from the body after the imaging, which is essential for safe clinical
use.
The new review does not suggest sweeping changes in the
use of MRI
contrast agents, as at present, there is no evidence linking the brain deposits to health risks.
The Mayo Clinic Department of Radiology continues to recommend the
use of gadolinium - based
contrast agents whenever they are clinically appropriate based upon all available data.
In this study, PSMA binding affinities were assessed for three MR
contrast agents, which were then imaged in living cells
using a 9.4 tesla magnet MR system.
Additionally, minimum requirements for individual providers should include an understanding of radiation safety needed for optimal imaging, exposure protection and knowledge of the
use of x-ray
contrast agents.
But her most important achievement, she thinks, was shedding new light on the physiology of brain activation by
using a variety of different
contrast agents.
Polarized xenon is also
used as a
contrast agent to enhance images in experimental magnetic resonance imaging (MRI) of human lungs, but conventional systems for producing and
using this gas can be as big as a car.
The PEG - IONCs
contrast agent was
used to dynamically follow an ischemia on the left side of a monkey's brain.
Contrast agents are often
used to improve the visibility of radiology of soft tissues and internal body structures, especially in cardiovascular and cerebral diseases.
The laser tomography method is novel in that it provides high
contrast, full color images without the
use of
contrast enhancing
agents.
«The power of this method is the ability to get the information on live cells, without the
use of
contrast agents or attached labels that could interfere with results.»
Researchers from MIT and the University of Nebraska have now developed a metal - free
contrast agent that could be safer to
use in those high - risk groups.
Less often
used are
contrast agents made from iron oxide nanoparticles, which are considered somewhat safer because the body already contains iron.
To find tumors via MRI, the Stanford team
used a new
contrast agent consisting of nanoparticles of iron.
In magnetic resonance imaging (MRI),
contrast agents are
used to enhance the imaging of tissue structures.
And existing
contrast agents — chemicals injected into the body to make tumors visible — leave the tissues too quickly to be
used in a lengthy, whole - body MRI.
With recent developments in
contrast agents and pulse sequences, some state - of - the - art techniques greatly improve the MR image quality by overcoming the time and spatial resolution limitations and have been
used for noninvasive evaluation of hepatic steatosis and vascular and biliary anatomy.
Using a pre-clinical model, the researchers delivered the microbubble contrast agent via intravenous injection and tracked it using ultras
Using a pre-clinical model, the researchers delivered the microbubble
contrast agent via intravenous injection and tracked it
using ultras
using ultrasound.
Altes and her team decided to
use a specific form of helium, helium - 3, as a harmless
contrast agent in conjunction with magnetic resonance imaging (MRI) to visualize lung function.
«On an MRI, a healthy lung should look completely white when helium - 3 is
used as a
contrast agent.
The researchers are now working on sensors that could be
used to monitor other biological properties, such as pH. «We hope this is the first of many types of solid - state
contrast agents where the material responds to its chemical environment in such a way that we can detect it by MRI,» Cima says.
Open - Source Automated Parahydrogen Hyperpolarizer for Molecular Imaging
Using 13C Metablic
Contrast Agents.
«We are optimistic because the FDA has already approved the
use of iron oxide as a
contrast agent in MRIs,» says Decuzzi.
In medicine, this element is
used as a
contrast agent — something that identifies structures in the body, such as neural tissues, that accumulate this element.
Built on an easy - to - make polymer, these particles can be
used as
contrast agents to light up tumors for MRI and PET scans or deliver chemo and other therapies to destroy tumors.
Gadolinium is
used as a
contrast agent to improve the visibility of internal organs in magnetic resonance imaging (MRI).
This is a major step forward in our endeavour to develop targeted
contrast agents for bone diagnostics for
use in clinical applications.»
There are two ultrasound techniques that can help identify vulnerable plaques, but both depend on the
use of
contrast agents called «microbubbles.»
The abdomen has to be shielded for a lot of the scans, and you can't
use the
contrast agent that's usually
used with CT scans.
Health providers have also
used this liquid for MRI imaging as an oral
contrast agent due to its high manganese concentration.
A
Contrast Cystography is a very effective type of X-ray that
uses a
contrasting agent injected into the bladder to help detect a mass.
For example, videofluoroscopy can be
used to create swallowing study by mixing a
contrast agent with food and then essentially filming via X-ray how the
contrast is swallowed and passed down the esophagus.
MRI is superior for evaluating soft tissue structures, and its advantages over standard radiography include its visualization of the spinal cord and nerve roots, its high
contrast resolution, and the ability to
use contrast agents.
Clinical
use of organic near - infrared fluorescent
contrast agents in image - guided oncologic procedures and its potential in veterinary oncology
Gadolinium is a metal found in
contrast agents (dyes)
used in magnetic resonance imaging (MRI) scans, including a form of MRI called magnetic resonance angiography (MRA).
The venture b.e. imaging GmbH, part of the Bender Gruppe GmbH, located in Baden - Baden, Germany, and SPL Medical B.V., located in Nijmegen, The Netherlands, have signed today an exclusive License and Distribution Agreement for the marketing of Combidex ® (Ferumoxtran - 10), a
contrast -
agent for the detection of cancer metastasis in the lymph nodes
using MR imaging, in Germany, Switzerland and Austria.
(All of the above is also quite
contrasted with the audio copyright trolling on YouTube, where basically anyone who's ever posted anything on YouTube receives claims for copyright infringement from various
agents in the presence of even the shortest audio clips that you'd think should clearly fall within the fair -
use doctrine.)
And speaking of chippiness, remember how I had wanted to showcase the
contrast of wood with paint in the way milk paint behaves when no bonding
agent is
used in the first coat?