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Result : Searchterm 'Contrast Agents' found in 17 terms [] and 106 definitions []
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Searchterm 'Contrast Agents' was also found in the following services: 
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News  (49)  Resources  (7)  Forum  (8)  
 
GadoversetamideInfoSheet: - Contrast Agents - 
Intro, Overview, 
Characteristics, 
Types of, 
etc.
 
Short name: Gd-DTPA-BMEA, generic name: Gadoversetamide
A paramagnetic extracellular MRI contrast agent with positive enhancement. When placed in a magnetic field, gadoversetamide decreases T1 and T2 relaxation times in tissues where it accumulates. At the recommended dose, the effect is primarily on T1 relaxation time, and produces an increase in signal intensity (brightness).
See Contrast Agents and OptiMARK™.

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• View the NEWS results for 'Gadoversetamide' (1).Open this link in a new window.
 
Further Reading:
  Basics:
OptiMARK® (gadoversetamide injection)
  News & More:
MAGNETIC RESONANCE IMAGING OF FOCAL LIVER LESIONS(.pdf)
2002
PRAC concludes assessment of gadolinium agents used in body scans and recommends regulatory actions, including suspension for some marketing authorisations
Friday, 10 March 2017   by www.satprnews.com    
Searchterm 'Contrast Agents' was also found in the following services: 
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Radiology  (46) Open this link in a new windowUltrasound  (75) Open this link in a new window
GastroMARK®InfoSheet: - Contrast Agents - 
Intro, Overview, 
Characteristics, 
Types of, 
etc.MRI Resource Directory:
 - Contrast Agents -
 
GastroMARK® belongs to the negative oral contrast agents (same as Lumirem®, another brand name for ferumoxsil). GastroMARK® is used to distinguish the loops of the bowel from other abdominal structures and physiology. When GastroMARK® is ingested, it flows through and darkens the stomach and the small intestine in 30 to 45 minutes. By more clearly identifying the intestinal loops, GastroMARK® improves visualization of adjacent abdominal tissues such as the pancreas.

Drug Information and Specification
NAME OF COMPOUND Ferumoxsil, silicone-coated superparamagnetic iron oxide, USAN, AMI-121
DEVELOPER AMAG Pharmaceuticals, Inc.
CENTRAL MOIETY Fe3+/Fe2+
CONTRAST EFFECT T2*enhanced
RELAXIVITY r1=3.4, r2=3.8, B0=1.0T
PHARMACOKINETIC Gastrointestinal
OSMOLALITY 250 mosm/kgH2O
CONCENTRATION 52.5mg Fe/300mL
DOSAGE 300 mL oral
PREPARATION Finished product
INDICATION Bowel marking
DEVELOPMENT STAGE For sale
DISTRIBUTOR See below
PRESENTATION Bottles containing 300 mL
DO NOT RELY ON THE INFORMATION PROVIDED HERE, THEY ARE NOT A SUBSTITUTE FOR THE ACCOMPANYING PACKAGE INSERT

Distribution Information
TERRITORY TRADE NAME DEVELOPMENT
STAGE
DISTRIBUTOR
USA GastroMARK® for sale Mallinckrodt Inc.
EU Lumirem® for sale Guerbet S.A.

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• View the DATABASE results for 'GastroMARK®' (6).Open this link in a new window

 
Further Reading:
  Basics:
ferumoxsil, oral suspension GastroMARK GastroMARK ®
MATERIAL SAFETY DATA SHEET
   by dailymed.nlm.nih.gov    
MRI Resources 
Nerve Stimulator - Homepages - Education pool - NMR - Raman Spectroscopy - MRI Technician and Technologist Career
 
Gd-DTPA Labeled DextranInfoSheet: - Contrast Agents - 
Intro, Overview, 
Characteristics, 
Types of, 
etc.
 
Short name:(Gd-DTPA)n-dextran, central moiety: Gd2+
Gd-DTPA labeled dextran is a substance that has been tested as a blood pool agent (intravascular MRI contrast agent). Dextran is a polysaccharide and has labeled with 15 Gd-DTPA moieties a higher T1 relaxivity than unbound Gd-DTPA, compared with a high safety level.

See also Intravascular Contrast Agents, Blood Pool Agents.
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• View the DATABASE results for 'Gd-DTPA Labeled Dextran' (2).Open this link in a new window

 
Further Reading:
  Basics:
Evaluation of Gd-DTPA-labeled dextran as an intravascular MR contrast agent: imaging characteristics in normal rat tissues
   by radiology.rsnajnls.org    
Searchterm 'Contrast Agents' was also found in the following services: 
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News  (49)  Resources  (7)  Forum  (8)  
 
HaemoglobinInfoSheet: - Contrast Agents - 
Intro, Overview, 
Characteristics, 
Types of, 
etc.
 
(Hb) Haemoglobin is the major endogenous oxygen-binding molecule, responsible for binding oxygen in the lung and transporting it to the tissues by means of the circulation. Haemoglobin is contained in very high concentration in the red blood cells.
Haemoglobin is an Fe chelate tightly binding one Fe ion in its II oxidation state where it carries the charge 2+ (ferrous iron). If an oxygen molecule is bound to Hb, Hb is called oxyhaemoglobin, if no oxygen molecule is bound it is called deoxyhaemoglobin. When haemoglobin is oxidized (i.e. in a haematoma), Fe2+ is transformed into Fe3+. The resulting haemoglobin is then called metoxyhaemoglobin (Hb Fe3+).
Deoxyhaemoglobin and metoxyhaemoglobin act as paramagnetic contrast agents in MR, while oxyhaemoglobin is diamagnetic. This partly explains the special appearance of an aging haematoma in MR imaging and is also the basic of the blood oxygenation level dependent contrast (BOLD) used in functional magnetic resonance imaging of the brain (fMRI).
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Further Reading:
  Basics:
MRI's inside story
Thursday, 4 December 2003   by www.economist.com    
  News & More:
MRI effectively measures hemochromatosis iron burden
Saturday, 3 October 2015   by medicalxpress.com    
Iron overload: accuracy of in-phase and out-of-phase MRI as a quick method to evaluate liver iron load in haematological malignancies and chronic liver disease
Friday, 1 June 2012   by www.ncbi.nlm.nih.gov    
EVALUATION OF HUMAN STROKE BY MR IMAGING
2000
Searchterm 'Contrast Agents' was also found in the following services: 
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Lumbar Spine MRI
 
MRI of the lumbar spine, with its multiplanar 3 dimensional imaging capability, is currently the preferred modality for establishing a diagnosis. MRI scans and magnetic resonance myelography have many advantages compared with computed tomography and/or X-ray myelography in evaluating the lumbar spine. MR imaging scans large areas of the spine without ionizing radiation, is noninvasive, not affected by bone artifacts, provides vascular imaging capability, and makes use of safer contrast agents (gadolinium chelate).
Due to the high level of tissue contrast resolution, nerves and discs are clearly visible. MRI is excellent for detecting degenerative disease in the spine. Lumbar spine MRI accurately shows disc disease (prolapsed disc or slipped disc), the level at which disc disease occurs, and if a disc is compressing spinal nerves. Lumbar spine MRI depicts soft tissues, including the cauda equina, spinal cord, ligaments, epidural fat, subarachnoid space, and intervertebral discs. Loss of epidural fat on T1 weighted images, loss of cerebrospinal fluid signal around the dural sac on T2 weighted images and degenerative disc disease are common features of lumbar stenosis.

Common indications for MRI of the lumbar spine:
Neurologic deficits, evidence of radiculopathy, acute spinal cord compression (e.g., sudden bowel/bladder disturbance)
Suspected systemic disorders (primary tumors, drop metastases, osteomyelitis)
Postoperative evaluation of lumbar spine: disk vs. scar
Localized back pain with no radiculopathy (leg pain)
Lumbar spine imaging requires a special spine coil. often used whole spine array coils have the advantage that patients do not need other positioning if also upper parts of the spine should be scanned. Sagittal T1 and T2 weighted FSE sequences are the standard views. With multi angle oblique techniques individually oriented transverse images of each intervertebral disc at different angles can be obtained.

See also the related poll result: 'MRI will have replaced 50% of x-ray exams by'
 
Images, Movies, Sliders:
 Anatomic Imaging of the Lumbar Spine  Open this link in a new window
      

Courtesy of  Robert R. Edelman

 
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Further Reading:
  Basics:
Lumbar Spine Stenosis: A Common Cause of Back and Leg Pain
   by www.aafp.org    
MRI Findings Linked to Effect of Lumbar Spine Surgery
Wednesday, 26 June 2013   by www.doctorslounge.com    
Spine imaging after lumbar disc replacement: pitfalls and current recommendations
Tuesday, 21 July 2009   by 7thspace.com    
  News & More:
Inappropriate Ordering of Lumbar Spine Magnetic Resonance Imaging: Are Providers Choosing Wisely? -
Tuesday, 2 February 2016   by www.ajmc.com    
Lumbar spine MRI limited in diagnosing ankylosing spondylitis
Friday, 7 March 2014   by www.healio.com    
How Weight-Bearing MRIs Can Improve Care & Lower Costs While Meeting Milliman Criteria
Friday, 4 October 2013   by www.beckersspine.com    
Lumbar Diskal Cyst Containing Intervertebral Disk Materials
Tuesday, 1 November 2011   by www.orthosupersite.com    
A Study of the Morphology of Lumbar Discs in Sitting and Standing Positions Using a 0.5T Open- Configuration MRI(.pdf)
2001   by cds.ismrm.org    
MRI Resources 
Developers - Pathology - Abdominal Imaging - Spectroscopy - MRI Technician and Technologist Jobs - Libraries
 
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