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Substance used in medical imaging
contrast agent (or contrast medium) is a substance used to increase the contrast of structures or fluids within the body in medical imaging. Contrast
Contrast_agent
Types of contrast agents used for magnetic resonance imaging
MRI contrast agents are contrast agents used to improve the visibility of internal body structures in magnetic resonance imaging (MRI). The most commonly
MRI_contrast_agent
Substance which enhances visibility in X-ray-based imaging
agents are substances used to enhance the visibility of internal structures in X-ray-based imaging techniques such as computed tomography (contrast CT)
Radiocontrast_agent
Medical diagnostic method
capture perfusion. In Dynamic susceptibility contrast MR imaging (DSC-MRI, or simply DSC), Gadolinium contrast agent (Gd) is injected (usually intravenously)
Perfusion_MRI
Substance to enhance X-ray imaging
Iodinated contrast is a form of water-soluble, intravenous radiocontrast agent containing iodine, which enhances the visibility of vascular structures
Iodinated_contrast
Type of chemical bonding with metal ions
supplements, in chelation therapy to remove toxic metals from the body, as contrast agents in MRI scanning, in manufacturing using homogeneous catalysts, in chemical
Chelation
Medical imaging technique
The contrast between different tissues is determined by the rate at which excited atoms return to the equilibrium state. Exogenous contrast agents may
Magnetic_resonance_imaging
Medical imaging technique
C1/C2 puncture is done laterally. Water-soluble non-ionic iodinated contrast agent (e.g., metrizamide) is used nowadays and cause very little complication
Myelography
Autonomous artificial intelligence agent
Agentic AI contrasts with tool-like AI use for narrow, specific tasks such as answering questions - as with chatbots in the non-agentic forms that were
AI_agent
Medical imaging technique
Contrast-enhanced ultrasound (CEUS) is the application of ultrasound contrast medium to traditional medical sonography. Ultrasound contrast agents rely
Contrast-enhanced_ultrasound
Medical condition
of contrast given intra-arterially with first-pass renal exposure Use of contrast agents with high osmolality (limited use today) Multiple contrast injections
Contrast-induced_nephropathy
shown particular promise is enzyme-activated MR contrast agents. Enzyme-activated MR contrast agents are compounds that cause a detectable change in image
Enzyme-activated MR contrast agents
Enzyme-activated_MR_contrast_agents
Peptides that facilitate cellular intake
medicine as drug delivery agents in the treatment of different diseases including cancer and virus inhibitors, as well as contrast agents for cell labeling.
Cell-penetrating_peptide
Quantitative susceptibility mapping (QSM) provides a novel contrast mechanism in magnetic resonance imaging (MRI) different from traditional susceptibility
Quantitative susceptibility mapping
Quantitative_susceptibility_mapping
Topics referred to by the same term
(behavior analysis) Contrast agent, used to distinguish structures or fluids within a body, often shortened to just "contrast" Contrast ratio, a measure
Contrast
Chemical element with atomic number 64 (Gd)
gadolinium-based MRI contrast agents in medical magnetic resonance imaging. The main uses of gadolinium, in addition to use as a contrast agent for MRI scans
Gadolinium
American multinational medical technology company
and infant care; and Pharmaceutical Diagnostics, which manufactures contrast agents and radiopharmaceuticals. GE HealthCare's primary customers are hospitals
GE_HealthCare
contrast agents to gain functional information about the body, from blood saturation levels to cancer proliferation rate. Endogenous contrast agents,
Photoacoustic_microscopy
inside them. Some of them are commonly used in medicine as ultrasound contrast agents, and others have been studied for use as oxygen therapeutics. The most
Perfluorocarbon_emulsions
Chemical compound
DOTA is used as a complexing agent, especially for lanthanide ions. Its complexes have medical applications as contrast agents and cancer treatments. The
DOTA_(chelator)
Contrast agent
name Ambelvist, is a macrocylic gadolinium-based MRI contrast agent (mGBCA) that is used with contrast-enhanced magnetic resonance imaging (CE-MRI) to detect
Gadoquatrane
Medical imaging technique
H) − 48.3 Standard doses in children: Iodinated contrast agents may cause allergic reactions, contrast-induced nephropathy, hyperthyroidism and possibly
Contrast_CT
Medical imaging procedure
form of CT to assess flow through blood vessels whilst injecting a contrast agent. Blood flow, blood transit time, and organ blood volume, can all be
CT_scan
Imaging technology
clinic as MRI contrast agents. Targeted contrast agents combine a dye or nanoparticle with a targeting ligand to provide MSOT contrast at specific tissues
Multispectral optoacoustic tomography
Multispectral_optoacoustic_tomography
Medical imaging technique
chambers. Modern angiography is performed by injecting a radio-opaque contrast agent into the blood vessel and imaging using X-ray based techniques such
Angiography
Medical imaging technique
abnormalities in the heart and blood vessels among other conditions. Contrast agents may be injected intravenously or into a joint to enhance the image
Physics of magnetic resonance imaging
Physics_of_magnetic_resonance_imaging
Guerbet (Euronext Paris: GBT ) is a France-based manufacturer of contrast agents used in medical imaging. The company was founded in 1926 by André Guerbet
Guerbet
Italian healthcare company
including contrast agents for X-ray, Computed Tomography (CT), and Magnetic Resonance Imaging (MRI), as well as microbubbles for Contrast Enhanced Ultrasound
Bracco_(company)
Perfusion scanning using CT
tissue attenuation following intravenous injection of an iodinated contrast agent CTP generates quantitative parametric maps of haemodynamic parameters
Perfusion_CT
Class of magnetic resonance angiography contrast agents
pool agents (BPAs) are a class of magnetic resonance angiography contrast agents. Blood pool agents (also known as intravascular contrast agents) are
Blood_pool_agent
Medical imaging of blood flow between heart and lungs
iodine-containing contrast agent at a high rate using an injector pump. Images are acquired with the maximum intensity of radio-opaque contrast in the pulmonary
CT_pulmonary_angiogram
Chemical compound
under the brand name Gadovist among others, is a gadolinium-based MRI contrast agent (GBCA). It received marketing approval in Canada and the United States
Gadobutrol
Palm tree with many uses, mainly fruit as cash crop
for producing bricks. Orally administered açaí has been tested as a contrast agent for magnetic resonance imaging (MRI) of the gastrointestinal system
Açaí_palm
Diagnostic radiographic technique
contrast medium, angiographic procedures need to be performed in digital subtraction angiography (DSA). The use of carbon dioxide as a contrast agent
Carbon_dioxide_angiography
Imaging molecules within living patients
common example of molecular imaging used clinically today is to inject a contrast agent (e.g., a microbubble, metal ion, or radioactive isotope) into a patient's
Molecular_imaging
Imaging technique using radiation
angioplasty is often done with angiography. Contrast radiography uses a radiocontrast agent, a type of contrast medium, to make the structures of interest
Radiography
Topical antiseptic and supplement
biology). Organic compounds containing iodine are also useful iodinated contrast agents in X-ray imaging. Common side effects when applied to the skin include
Iodine_(medical_use)
Production of an image when X-rays strike a fluorescent screen
then be introduced (negative contrast), which looks black on the film. The barium meal is an example of a contrast agent swallowed to examine the upper
Fluoroscopy
Contrast agent
brand name Isovue among others, is a nonionic, low-osmolar iodinated contrast agent, developed by Bracco Diagnostics. It is available in various concentrations
Iopamidol
Angiography that produces images of blood vessels in and around the brain
system to the carotid artery, where a contrast agent is injected. A series of radiographs are taken as the contrast agent spreads through the brain's arterial
Cerebral_angiography
Blue dye derived from indigo
in food and other consumables, cosmetics, and as a medical contrast agent and staining agent; it also acts as a pH indicator. It is approved for human
Indigo_carmine
Medical condition
organs. NSF is caused by exposure to gadolinium in gadolinium-based MRI contrast agents (GBCAs) in patients with impaired kidney function. Epidemiological
Nephrogenic_systemic_fibrosis
Chemical compound
macrocycle-structured gadolinium-based MRI contrast agent (GBCA). It consists of the organic acid DOTA as a chelating agent, and gadolinium (Gd3+), and is used
Gadoteric_acid
Medical diagnostic method
Double-contrast barium enemas are less invasive than a colonoscopy and have comparatively fewer issues in a viable large bowel. Contrast agent Lower gastrointestinal
Double-contrast_barium_enema
Computed tomography technique
iodine or gadolinium) used as contrast agents. This has the potential reduce the amount of X-ray dose from a contrast scan by removing the need for a
Photon-counting computed tomography
Photon-counting_computed_tomography
German radiologist
tomography (MDCT), magnetic resonance imaging (MRI), evaluation of contrast agent and MR-guided procedures. In 1993 Vogl was appointed professor for general
Thomas_Vogl
Medical condition
The diagnosis was established by observing the rapid drainage of a contrast agent through the deep dorsal vein while conducting pharmacodynamic ultrasonography
Glans_insufficiency_syndrome
Medical Imaging test done on CT scanner
that examines the urinary tract after contrast dye is injected into a vein. In a CT urogram, the contrast agent is through a cannula into a vein, allowed
Computed_tomography_urography
measuring their collapse pressure . The optical contrast of gas vesicles also enables them to serve as contrast agents in optical coherence tomography, with applications
Gas_vesicle
Contrast agent used during X-rays
Barium sulfate suspension, often simply called barium, is a contrast agent used during X-rays. Specifically it is used to improve visualization of the
Barium_sulfate_suspension
Chemical compound
Gadoversetamide is a gadolinium-based MRI contrast agent, particularly for imaging of the brain, spine and liver. It is marketed under the trade name OptiMARK
Gadoversetamide
Group of techniques based on MRI to image blood vessels
or on contrast (inherent or pharmacologically generated). The most frequently applied MRA methods involve the use of intravenous contrast agents, particularly
Magnetic resonance angiography
Magnetic_resonance_angiography
Deep optics imaging technique
developed by Liu et al. in 2014. The basic principle of this type of contrast agent is to change the fluorophore concentration on the microbubble surface
Ultrasound-switchable fluorescence imaging
Ultrasound-switchable_fluorescence_imaging
Molecular Imaging and Contrast Agent Database or MICAD was a freely accessible online source of information on in vivo molecular imaging agents. It was established
MICAD
Medical specialty for imaging procedures
contrast agent for the gastrointestinal system, and carbon dioxide can be used as a contrast agent in the venous system; in these cases, the contrast
Radiology
Combination of cancer diagnosis and treatment
approaches involve a medical imaging component, such as radiotracers, contrast agents, positron emission tomography, and magnetic resonance imaging. The
Theranostics
Complex of gadolinium by DTPA
acid, sold under the brand name Magnevist, is a gadolinium-based MRI contrast agent. It is usually administered as a salt of a complex of gadolinium with
Gadopentetic_acid
Radiographs used to examine abnormalities of the digestive system excluding the colon
examine the gastrointestinal tract for abnormalities. A contrast medium, usually a radiocontrast agent such as barium sulfate mixed with water, is ingested
Upper_gastrointestinal_series
2026 South Korean television series
Agent Kim Reactivated (Korean: 김부장) is a 2026 South Korean revenge drama and action thriller television series written by Nam Dae-joong [ko], and directed
Agent_Kim_Reactivated
Merging of droplets, bubbles or particles
clouds. Contrast-enhanced ultrasound in medicine applies microscopic bubbles for imaging and therapy. Coalescence of ultrasound contrast agent microbubbles
Coalescence_(physics)
Chemical compound
is a gadolinium-based MRI contrast agent. It was used as the trisodium salt monohydrate form. It acts as a blood pool agent by binding to human serum
Gadofosveset
Test for Fallopian tube patency
Using a contrast agent, the ultrasound image can be used to detect whether and how the contrast medium flows through the fallopian tubes. The contrast medium
Chromopertubation
Class of medications used to alleviate anxiety
antipanic or anti-anxiety agent) is a medication or other intervention that reduces anxiety. This effect is in contrast to anxiogenic agents which increase anxiety
Anxiolytic
Ultrasound imaging method
Ultrasound contrast agents are particles used in ultrasound scans to improve image contrast. The first reported use of an ultrasound contrast agent was by
Acoustic_angiography
Chemical compound
sold under the trade names Omnipaque and Iodaque among others, is a contrast agent used for X-ray imaging. This includes when visualizing arteries, veins
Iohexol
attenuation coefficients can hence be expanded as In contrast-enhanced imaging, high-atomic-number contrast agents with K absorption edges in the diagnostic energy
Spectral imaging (radiography)
Spectral_imaging_(radiography)
Chemical compound
contrast agent (GBCA), used in magnetic resonance imaging (MRI) procedures to assist in the visualization of blood vessels. Gadodiamide is a contrast
Gadodiamide
Pharmaceutical drug
is an iodine-containing radiocontrast agent. The iodine atoms readily absorb X-rays, resulting in better contrast in radiography images. The quality of
Iobitridol
been reported as magnetic resonance imaging contrast agents. These are, however, investigational agents which have not yet been tried in humans.[citation
Superparamagnetic iron–platinum particles
Superparamagnetic_iron–platinum_particles
MRI contrast agent
Gadopiclenol, sold under the brand name Elucirem or Vueway among others, is a contrast agent used with magnetic resonance imaging (MRI) to detect and visualize lesions
Gadopiclenol
Technique in molecular biology
a non-thermal action based on pressure. Microbubble contrast agents are generally used in contrast-enhanced ultrasound applications to enhance the acoustic
Sonoporation
Medication derived from poppyseed oil and iodine often used as a contrast agent
poppyseed oil and iodine. When given by injection, it is a radio-opaque contrast agent that is used to outline structures in radiological investigations. When
Iodized_oil
Carbon allotrope
high soft-tissue contrast. GNR synthesized by unzipping single- and multi-walled carbon nanotubes have been reported as contrast agents for photoacoustic
Graphene_nanoribbon
and acoustic properties. They are used in medical diagnostics as a contrast agent for ultrasound imaging. The gas-filled microbubbles, typically air or
Microbubble
Chemical compound
which is produced by Bayer Healthcare. It is a low osmolar, non-ionic contrast agent for intravascular use; i.e., it is injected into blood vessels. It is
Iopromide
Chemical compound
features a helical carbon backbone. In medical imaging it is used as a contrast agent. Because it is biologically inert and chemically stable, perfluorohexane
Perfluorohexane
Chemical herbicide and defoliant
areas. Animal species diversity is sharply reduced in contrast with unsprayed areas. The use of Agent Orange in Vietnam resulted in numerous legal actions
Agent_Orange
Highly soluble organic compound, food ingredient
distinguishing feature of this compound is that it is very soluble in water, in contrast to ferric citrate which is not very soluble. In its crystal structure each
Ammonium_ferric_citrate
Medical diagnostic method
while cresyl violet and acriflavine are commonly used agents. The lack of choice of contrast agents may limit the application of CLE. For instance, patients
Confocal_endoscopy
Academic journal
Hindawi Publishing Corporation since 2017. It covers the areas of contrast agents and molecular imaging, covering all areas of imaging technologies with
Contrast Media & Molecular Imaging
Contrast_Media_&_Molecular_Imaging
Chemical compound
Gadoteridol (INN) is a gadolinium-based MRI contrast agent, used particularly in the imaging of the central nervous system. It is sold under the brand
Gadoteridol
Respiratory system imaging
medical imaging to evaluate the lungs and search for lung disorders. Contrast agents are sometimes used in CT scans of the chest to accentuate or enhance
Computed tomography of the chest
Computed_tomography_of_the_chest
Medical imaging of the urethra
such as: allergy to contrast agents, acute urinary tract infection, and recent instrumentation of urethra. A low osmolar contrast agent with concentration
Retrograde_urethrogram
Medical diagnostic method
December 2006), Medical News: FDA Issues Alert on Gadolinium-Based Contrast Agent for Kidney Patients, vol. Nephrology, General Nephrology, MedPage Today
Arthrogram
multimodal MRI-computerized tomograph (CT) contrast agents. Graphene micro- and nano-particles have served as contrast agents for photoacoustic and thermoacoustic
Potential applications of graphene
Potential_applications_of_graphene
Medication administered into a vein
of a contrast agent into a vein. The specific imaging technique being employed will determine the characteristics of an appropriate contrast agent to increase
Intravenous_therapy
Chemical compound
name Teslascan as mangafodipir trisodium) is a contrast agent delivered intravenously to enhance contrast in magnetic resonance imaging (MRI) of the liver
Mangafodipir
Medical intervention
Harmonic imaging used for perfusion detection when using ultrasound contrast agents and for the detection of tissue harmonics. Common pulse schemes for
Medical_ultrasound
Topics referred to by the same term
Imaging agent may refer to: Contrast agent, a substance used in medical imaging Radiopharmaceutical, a pharmaceutical drug containing radioactive isotopes
Imaging_agent
Chemical compound
distress. Mattrey RF (February 1989). "Perfluorooctylbromide: a new contrast agent for CT, sonography, and MR imaging". AJR. American Journal of Roentgenology
Perflubron
Chemical compound
rare-earth element gadolinium, derivatives, of which are potential contrast agents for magnetic resonance imaging. Gadolinium oxide adopts two structures
Gadolinium(III)_oxide
Chemist at Wayne State University
Technology in 2004, with his dissertation, Delivery and Activation of Contrast Agents for Magnetic Resonance Imaging, advised by Thomas J. Meade. From 2004
Matthew_John_Allen
Contrast agent for imaging, no longer used clinically
hydrophilic (water-soluble) iodinated contrast agents, which are not radioactive, are universally used when intravenous contrast is needed in clinical X-ray procedures
Thorotrast
Neoplasm in the brain
requires the injection of contrast agent, usually gadopentetate dimeglumine (Gd-DTPA) into the veins in order to enhance the contrast. pMRI provides a cerebral
Brain_tumor
Chemical compound
iodine-containing, water-soluble radiocontrast agent. The iodine atoms readily absorb X-rays, resulting in a higher contrast of X-ray images. It has a low osmolality
Ioxaglic_acid
American biopharmaceutical executive and author
imaging company developing chelated-metal contrast agents for magnetic resonance imaging (MRI). Two of the agents developed at Salutar, the gadolinium-based
Steven_C._Quay
Complex of gadolinium by a chelating agent derived from DTPA
Gadoxetic acid is a gadolinium-based MRI contrast agent. Its salt, gadoxetate disodium, is marketed as Primovist in Europe and Eovist in the United States
Gadoxetic_acid
Chemical compound and greenhouse gas
before being absorbed in the blood in 10–14 days. SF 6 is used as a contrast agent for ultrasound imaging. Sulfur hexafluoride microbubbles are administered
Sulfur_hexafluoride
Use of computed tomography angiography to assess the coronary arteries of the heart
addition to radiocontrast. Since an iodine-containing contrast agent is used, severe contrast agent allergy, uncontrolled hyperthyroidism or renal function
Coronary_CT_angiography
context of biomedical ultrasonic imaging techniques using acoustic contrast agents and in the field of ultrasonic manipulation of particles (acoustophoresis)
Acoustic_contrast_factor
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