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Result : Searchterm 'Functional Magnetic Resonance Imaging' found in 1 term [] and 7 definitions [], (+ 3 Boolean[] results
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Searchterm 'Functional Magnetic Resonance Imaging' was also found in the following services: 
News  (47)  Resources  (9)  
Paramagnetic Chemical Exchange Saturation TransferInfoSheet: - Contrast Agents - 
Intro, Overview, 
Types of, 
(PARACEST) The alteration of the proton density or total water signal changes contrast and can be detected by the MRI scanner. Paramagnetic chemical exchange saturation transfer contrast agents are based upon the magnetization transfer mechanism.
Lanthanide ion complexes formed with tetra-amide based ligands display unusually slow water exchange kinetics and this feature may be used to alter image contrast by applying a selective presaturation pulse in an imaging sequence. This results in chemical exchange saturation transfer (CEST) from the lanthanide-bound water to bulk water thereby altering image contrast.
Chemical Exchange Saturation Transfer (CEST) agents are a class of contrast agents that could potentially revolutionize the MRI field because of their improved sensitivity and can have a great impact on functional magnetic resonance imaging.
Further Reading:
Multimodal Nanoparticles for Quantitative Imaging(.pdf)
Tuesday, 13 December 2011   by    
  News & More:
New Brain Imaging Technique Identifies Previously Undetected Epileptic Seizure Sites
Friday, 13 November 2015   by    
Non-invasive Imaging Method For Diagnosing Osteoarthritis Developed
Friday, 15 February 2008   by    
Searchterm 'Functional Magnetic Resonance Imaging' was also found in the following services: 
Radiology  (1) Open this link in a new windowMarket  (1) Open this link in a new window
The ability of magnetic compounds to increase the relaxation rates of the surrounding water proton spins.
Relaxivity is used to improve the contrast of the image, and to study tissue specific areas where the contrast agent better diffuses or to perform functional magnetic resonance imaging.
The relaxivity of MRI contrast agents depends on the molecular structure and kinetic of the complex. To increase the number of water molecules that are in the inner sphere of the complex, or to slow down the molecular rotational correlation time, are possibilities to improve the water relaxivity.
Relaxivity units ( r1, r2 ) are mM-1 * sec-1 (at varying temperatures).

• View the DATABASE results for 'Relaxivity' (51).Open this link in a new window

• View the NEWS results for 'Relaxivity' (2).Open this link in a new window.
Further Reading:
  News & More:
Measurements of the relaxivity of gadolinium chelates in tissues in vivo(.pdf)
2001   by    
MRI Resources 
Journals - Process Analysis - MR Myelography - Crystallography - Safety Training - Non-English
iMotion™ 1.5 Tesla MagnetInfoSheet: - Devices -
Types of Magnets, 
etc.MRI Resource Directory:
 - Devices - The mobile intraoperative iMotion system produces real-time images used for MR guided surgery and offers functional magnetic resonance imaging, MR spectroscopy, perfusion imaging, and diffusion weighted imaging capabilities.
The iMotion 1.5 T magnet moves to the patient, gliding in and out of place as needed, without affecting surgical, anesthetic, and nursing management.
See also Intraoperative Magnetic Resonance Imaging, MR Guided Interventions.
Device Information and Specification
CONFIGURATION Mobile compact
SURFACE COILS Whole body, intra-operative head, neck volume, atlas head//neck vascular quadrature phased array, spine quadrature, C/T/L spine phased array, small joint, large joint, TMJ bilateral, shoulder phased array, extremity quadrature volume, wrist, hand quadrature, general purpose flexible, pelvis/abdomen phased array, body quadrature, phased array flexible, breast bilateral
SYNCHRONIZATION Standard cardiac gating, ECG/peripheral, respiratory gating
PULSE SEQUENCES SE, IR, TSE, EPI, Diffusion, Perfusion, Angiography
IMAGING MODES Localizer, single slice, multislice, volume
MAGNET TYPE Superconducting

• View the DATABASE results for 'iMotion™ 1.5 Tesla Magnet' (2).Open this link in a new window

Further Reading:
  News & More:
Siemens and IMRIS Partner to Offer Ceiling-Mounted MRI; Movable iMotion System Serves Both Operating Rooms and Diagnostic Imaging Departments, Enables Significantly Improved Return on Investment.
Tuesday, 4 April 2006   by    
IMRIS receives FDA clearance for next generation VISIUS Surgical Theatre
Thursday, 13 February 2014   by    
Searchterm 'Functional Magnetic Resonance Imaging' was also found in the following services: 
News  (47)  Resources  (9)  
Contrast Enhanced MRIInfoSheet: - Contrast Agents - 
Intro, Overview, 
Types of, 
etc.MRI Resource Directory:
 - Contrast Enhanced MRI -
Contrast enhanced MRI is a commonly used procedure in magnetic resonance imaging. The need to more accurately characterize different types of lesions and to detect all malignant lesions is the main reason for the use of intravenous contrast agents.
Some methods are available to improve the contrast of different tissues. The focus of dynamic contrast enhanced MRI (DCE-MRI) is on contrast kinetics with demands for spatial resolution dependent on the application. DCE-MR imaging is used for diagnosis of cancer (see also liver imaging, abdominal imaging, breast MRI, dynamic scanning) as well as for diagnosis of cardiac infarction (see perfusion imaging, cardiac MRI). Quantitative DCE-MRI requires special data acquisition techniques and analysis software.
Contrast enhanced magnetic resonance angiography (CE-MRA) allows the visualization of vessels and the temporal resolution provides a separation of arteries and veins. These methods share the need for acquisition methods with high temporal and spatial resolution.
Double contrast administration (combined contrast enhanced (CCE) MRI) uses two contrast agents with complementary mechanisms e.g., superparamagnetic iron oxide to darken the background liver and gadolinium to brighten the vessels. A variety of different categories of contrast agents are currently available for clinical use.
Reasons for the use of contrast agents in MRI scans are:
Relaxation characteristics of normal and pathologic tissues are not always different enough to produce obvious differences in signal intensity.
Pathology that is sometimes occult on unenhanced images becomes obvious in the presence of contrast.
Enhancement significantly increases MRI sensitivity.
In addition to improving delineation between normal and abnormal tissues, the pattern of contrast enhancement can improve diagnostic specificity by facilitating characterization of the lesion(s) in question.
Contrast can yield physiologic and functional information in addition to lesion delineation.
Imaging of arteries and veins with contrast enhanced angiography (CE MRA).

Common Indications:
Brain MRI : Preoperative/pretreatment evaluation and postoperative evaluation of brain tumor therapy, CNS infections, noninfectious inflammatory disease and meningeal disease.
Spine MRI : Infection/inflammatory disease, primary tumors, drop metastases, initial evaluation of syrinx, postoperative evaluation of the lumbar spine: disk vs. scar.
Breast MRI : Detection of breast cancer in case of dense breasts, implants, malignant lymph nodes, or scarring after treatment for breast cancer, diagnosis of a suspicious breast lesion in order to avoid biopsy.

For Ultrasound Imaging (USI) see Contrast Enhanced Ultrasound at See also Blood Pool Agents, Myocardial Late Enhancement, Cardiovascular Imaging, Contrast Enhanced MR Venography, Contrast Resolution, Dynamic Scanning, Lung Imaging, Hepatobiliary Contrast Agents, Contrast Medium and MRI Guided Biopsy.

Images, Movies, Sliders:
 Delayed Myocardial Contrast Enhancement from Infarct  Open this link in a new window

Courtesy of  Robert R. Edelman
 Left Circumflex Ischemia First-pass Contrast Enhancement  Open this link in a new window

Courtesy of  Robert R. Edelman

 Normal Lung Gd Perfusion MRI  Open this link in a new window
 MRI of the Brain Stem with Temoral Bone and Auditory System  Open this link in a new window
SlidersSliders Overview

 Breast MRI Images T1 Pre - Post Contrast  Open this link in a new window
Radiology-tip.comContrast Enhanced Computed Tomography
Radiology-tip.comContrast Enhanced Ultrasound,  Contrast Enhanced Doppler Imaging

• View the DATABASE results for 'Contrast Enhanced MRI' (14).Open this link in a new window

• View the NEWS results for 'Contrast Enhanced MRI' (8).Open this link in a new window.
Further Reading:
Optimal k-Space Sampling for Dynamic Contrast-Enhanced MRI with an Application to MR Renography
Thursday, 5 November 2009   by    
Background MRI Enhancement Up in Premenopausal Breast Cancer
Friday, 7 June 2013   by    
Bringing innovative technologies together
Monday, 18 November 2013   by    
  News & More:
The Effects of Breathing Motion on DCE-MRI Images: Phantom Studies Simulating Respiratory Motion to Compare CAIPIRINHA-VIBE, Radial-VIBE, and Conventional VIBE
Tuesday, 7 February 2017   by    
MRI Contrast Agent Analysis from Bruker
Sunday, 11 August 2013   by    
CMC Contrast Granted Orphan Drug Designation by the FDA for its Liver Specific MRI Contrast Media CMC-001
Wednesday, 27 November 2013   by    
All-organic MRI Contrast Agent Tested In Mice
Monday, 24 September 2012   by    
A groundbreaking new graphene-based MRI contrast agent
Friday, 8 June 2012   by    
Novel Imaging Technique Improves Prostate Cancer Detection
Tuesday, 6 January 2015   by    
New oxygen-enhanced MRI scan 'helps identify most dangerous tumours'
Thursday, 10 December 2015   by    
Searchterm 'Functional Magnetic Resonance Imaging' was also found in the following services: 
Radiology  (1) Open this link in a new windowMarket  (1) Open this link in a new window
Special ImagingInfoSheet: - Sequences - 
Types of, 
Special imaging primarily means advanced MRI techniques used for qualitative and quantitative measurement of biological metabolism as e.g., spectroscopy, perfusion imaging (PWI, ASL), diffusion weighted imaging (DWI, DTI, DTT) and brain function (BOLD, fMRI). This physiological magnetic resonance techniques offer insights into brain structure, function, and metabolism.
Spectroscopy provides functional information related to identification and quantification of e.g. brain metabolites. MR perfusion imaging has applications in stroke, trauma, and brain neoplasm. MRI provides the high spatial and temporal resolution needed to measure blood flow to the brain. arterial spin labeling techniques utilize the intrinsic protons of blood and brain tissue, labeled by special preparation pulses, rather than exogenous tracers injected into the blood.
MR diffusion tensor imaging characterizes the ability of water to spread across the brain in different directions. Diffusion parallel to nerve fibers has been shown to be greater than diffusion in the perpendicular direction. This provides a tool to study in vivo fiber connectivity in brain MRI.
FMRI allows the detection of a functional activation in the brain because cortical activity is intimately related to local metabolism changes.
See also Diffusion Tensor Tractography.

• View the NEWS results for 'Special Imaging' (14).Open this link in a new window.
Further Reading:
MRI's inside story
Thursday, 4 December 2003   by    
Diffusion Imaging: From Basic Physics to Practical Imaging
1999   by    
  News & More:
This new 'whole body' MRI is better for cancer patients
Tuesday, 28 January 2014   by    
Turbo-FLASH Based Arterial Spin Labeled Perfusion MRI at 7 T
Thursday, 20 June 2013   by    
3-D Myocardial Perfusion Cardiac MRI Detects Functionally Significant CAD
Friday, 20 July 2012   by    
Multiparametric MRI for Detecting Prostate Cancer
Wednesday, 17 December 2014   by    
MRI Resources 
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