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Imagent GIInfoSheet: - Contrast Agents - 
Intro, Overview, 
Characteristics, 
Types of, 
etc.MRI Resource Directory:
 - Contrast Agents -
 
PerflubronŽ is a perfluorochemical for use as an oral contrast agent. Due to its insolubility in water it does not mix with intestinal secretions; thus bowel lumina appear homogeneously dark on MR images when PerflubronŽ replaces bowel contents. Filled bowel loops appear black with all pulse sequences because the contrast agent lacks mobile protons.
It is commercially available as Imagent GI. Because rapid transit through the gastrointestinal tract it reaches the rectum within 30 to 40 minutes in most patients. MR imaging of the upper abdominal region should begin within 15 minutes and of the pelvic region 15 to 60 minutes after ingestion of perflubron.
See also Classifications, Characteristics, etc.

Drug Information and Specification
NAME OF COMPOUND Perfluoroctylbromide
DEVELOPER Alliance
CENTRAL MOIETY
CONTRAST EFFECT Negative enhancement
RELAXIVITY Proton density reduction, signal void
PHARMACOKINETIC Gastrointestinal
OSMOLALITY
CONCENTRATION Water immiscible liquid
DOSAGE 9 mL per kg of body weight
PREPARATION Finished product
INDICATION Bowel marking
DEVELOPMENT STAGE For sale
DISTRIBUTOR See below
PRESENTATION Bottle of 200cc
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 Imagent GIŽ for sale Alliance Pharmaceutical Corp.

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Further Reading:
  News & More:
Slumping MRI market prompts Alliance to halt GI contrast agent effort
Wednesday, 28 September 1994   by www.searchmedica.com    
MRI Resources 
IR - Cardiovascular Imaging - RIS - Pediatric and Fetal MRI - Blood Flow Imaging - Breast MRI
 
Trace Image
 
In trace images, the contrast is generated by the direction of the diffusion tensor. This parametric images contains the average of the three eigenvalues (independent of the frame of reference).
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MRI Resources 
Software - Breast MRI - Movies - Image Quality - Mobile MRI Rental - Service and Support
 
Image Quality
 
The quality of magnetic resonance imaging is particularly dependent on image resolution (matrix, field of view, slice thickness), contrast (TE, TR), signal to noise ratio (bandwidth, signal averaging) and lack of artifacts. These MRI parameters are affected by the field homogeneity, the field strength, the coil, the pulse sequence type and imaging techniques like parallel imaging.
See also Image Contrast Characteristics.
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Further Reading:
  Basics:
Guidelines for Developing Automated Quality Control Procedures for Brain Magnetic Resonance Images Acquired in Multi-Centre Clinical Trials
Tuesday, 26 April 2011   by www.intechopen.com    
Image Characteristics and Quality
   by www.sprawls.org    
  News & More:
Breast MRI more widely used now that equipment, images are better
Sunday, 21 October 2012   by www.kentucky.com    
Searchterm 'Image' was also found in the following services: 
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Modulus Image
 
Modulus images acquired with an IR sequence do not take negative magnetization spin values into account. The "real" image, displayed with a bright background is recommended for correct tissue contrast.
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MRI Resources 
Journals - Resources - Health - Implant and Prosthesis pool - Mobile MRI Rental - Mobile MRI
 
In Phase Image
 
The term in phase refers to an image in which the signals from two spectral components (such as fat and water) add constructively in a voxel. T1 weighted in phase images are acquired by a gradient echo-based technique with a short TR, TE and a high flip angle greater than 60 degrees. To some degree, in phase sequences are more sensitive to detection of focal hepatic lesions than out of phase for evaluating reduced lesion-to-liver contrast, but the choice for a T1 gradient echo sequence is still based on field strength, advanced imaging techniques (breath hold imaging), and physician preference.
 
Images, Movies, Sliders:
 MRI Liver In Phase  Open this link in a new window
    
 
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Further Reading:
  Basics:
Artifacts in MRI
Saturday, 1 October 2011   by www.huc.min-saude.pt    
  News & More:
Direct Water and Fat Determination in Two-Point Dixon Imaging
April 2013   by scholarship.rice.edu    
MRI Resources 
MRI Training Courses - General - Quality Advice - Health - Stimulator pool - Resources
 
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