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Searchterm 'Image' was also found in the following services: 
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News  (255)  Resources  (73)  Forum  (128)  
 
Magnitude Image
 
The normal image display, at which the grey scale of a display element corresponds to the magnitude of the MR signal.
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MRI Resources 
Cardiovascular Imaging - - RIS - Universities - Intraoperative MRI - Mass Spectrometry
 
Image Resolution
 
The image resolution is the level of detail of an image and a measurement of image quality. Higher resolution means more image detail, for example when two structures 1 mm apart are distinguishable in an image, this picture has a higher resolution than an image where they are not to distinguish.
More data points in an MR image (with same FOV) will decrease the pixel size, but not accurately improve the resolution because the different MRI sequences influence the contrast and the discernment of different tissues. With high contrast and optimal signal to noise ratio, the image resolution is depend on FOV and number of data points of a picture, but T2* effects have an additional influence.
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• View the DATABASE results for 'Image Resolution' (9).Open this link in a new window


• View the NEWS results for 'Image Resolution' (1).Open this link in a new window.
 
Further Reading:
  Basics:
The Basics of MRI
   by www.cis.rit.edu    
  News & More:
Optimizing Musculoskeletal MR
   by rad.usuhs.mil    
MRI Resources 
MRCP - PACS - Jobs pool - Breast MRI - Process Analysis - General
 
R-Weighted Image
 
When the contrast of an MR image is predominantly dependent on the spin density the term of this image is R-weighted. Also called (PD) proton density weighted image.
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Searchterm 'Image' was also found in the following services: 
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News  (255)  Resources  (73)  Forum  (128)  
 
Image Data Filter
 
Various reconstruction filters can be applied to MR images to reduce noise.
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MRI Resources 
Knee MRI - Services and Supplies - Equipment - Process Analysis - Musculoskeletal and Joint MRI - Bioinformatics
 
T1 Weighted ImageInfoSheet: - Sequences - 
Intro, 
Overview, 
Types of, 
etc.
 
The basis of T1 weighted imaging is the longitudinal relaxation. A T1 weighted magnetic resonance image is created typically by using short TE and TR times.
The final image is a reflection of more than one of these pulse sequence parameters, weighted according to the type of sequence and its timing. T1 signals determine predominantly the contrast and brightness in this type of images but proton density will always contribute to the image intensity. The T1 dependence is mainly determined by the repetition time or any pre-pulses (such as in an inversion recovery pulse sequence).
Due to the larger longitudinal and transverse magnetization, fat has a higher signal and will appear bright on a T1 contrast MR image. Conversely, water has less longitudinal magnetization prior to a RF pulse, therefore less transverse magnetization after a RF pulse yielding low signal appearing dark on a T1 contrast image. Often, a paramagnetic contrast agent, a gadolinium compound, is administered, and both pre-contrast T1 weighted images and post-contrast T1 weighted images are obtained.
 
Images, Movies, Sliders:
 Lumbar Spine T1 SE Sagittal  Open this link in a new window
    

Courtesy of  Robert R. Edelman
 Shoulder Axial T1 SE  Open this link in a new window
 Shoulder Coronal T1 SE  Open this link in a new window
    

Courtesy of  Robert R. Edelman
 
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• View the DATABASE results for 'T1 Weighted Image' (5).Open this link in a new window

 
Further Reading:
  Basics:
Magnetic resonance imaging - From Wikipedia, the free encyclopedia.
   by en.wikipedia.org    
  News & More:
Possible New MRI Marker for Multiple Sclerosis Progression
Wednesday, 29 August 2007   by www.medpagetoday.com    
MRI Resources 
Contrast Agents - Implant and Prosthesis - IR - Spectroscopy pool - DICOM - Intraoperative MRI
 
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