Magnetic Resonance - Technology Information Portal Welcome to MRI Technology
Info
  Sheets

Out-
      side
 



 
 'Equilibrium' 
SEARCH FOR    
 
  2 3 5 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Result : Searchterm 'Equilibrium' found in 7 terms [] and 29 definitions []
previous     6 - 10 (of 36)     next
Result Pages : [1 2]  [3 4 5 6 7 8]
Searchterm 'Equilibrium' was also found in the following services: 
spacer
Resources  (1)  
 
Driven Equilibrium Magnetization PreparationInfoSheet: - Sequences - 
Intro, 
Overview, 
Types of, 
etc.
 
(DE prep) See Driven Equilibrium.
spacer
Searchterm 'Equilibrium' was also found in the following service: 
spacer
Radiology  (3) Open this link in a new window
Driven Equilibrium Fast Gradient Recalled Acquisition in the Steady StateInfoSheet: - Sequences - 
Intro, 
Overview, 
Types of, 
etc.MRI Resource Directory:
 - Sequences -
 
(DE FGR) A gradient echo sequence using a pulse, which sensitizes the sequence to variations in T2, rather than waiting for T1 relaxation.
See Driven Equilibrium, Gradient Recalled Echo Sequence and Steady State Free Precession.
spacer
MRI Resources 
Distributors - Brain MRI - MRA - Implant and Prosthesis pool - Fluorescence - Mobile MRI
 
Fast Relaxation Fast Spin EchoInfoSheet: - Sequences - 
Intro, 
Overview, 
Types of, 
etc.
 
(FRFSE, FR-FSE) The fast relaxation fast spin echo sequence provides high signal intensity of fluids even with short repetition times, and can be used with parallel imaging techniques for short breath hold imaging or respiratory gating for free-breathing, high isotropic resolution MR imaging. After signal decay at the end of the echo train, a negative 90° pulse align spins with long T2 from the transverse plane to the longitudinal plane, leading to a much faster recovery of tissues with long T2 time to the equilibrium and thus better contrast between tissues with long and short T2.
Fast relaxation FSE has advantages also for volumetric imaging as the TR can be substantially reduced and thus the scan time. The sequence can be post processed with maximum intensity projection, surface or volume rendering algorithms to visualize anatomical details in brain or spine MRI. Cerebro spinal fluid pulsation artifacts, often problematic in the cervical or thoracic spine may be reduced by radial sampling, in particular when combined with acquisitions of the PROPELLER type.

See also Fast spin echo, Driven Equilibrium.
 
Images, Movies, Sliders:
 Shoulder Sagittal T2 FatSat FRFSE  Open this link in a new window
    

Courtesy of  Robert R. Edelman
 Shoulder Axial T2 FatSat FRFSE  Open this link in a new window
 Shoulder Coronal T2 FatSat FRFSE  Open this link in a new window
    

Courtesy of  Robert R. Edelman
 
spacer
Searchterm 'Equilibrium' was also found in the following services: 
spacer
Resources  (1)  
 
Relaxation TimeForum -
related threads
 
After RF excitation the spins will tend to return to their equilibrium distribution in which there is no transverse magnetization and the longitudinal magnetization is at its maximum value and oriented in the direction of the static magnetic field. The transverse magnetization decays toward zero with a characteristic time constant T2, and the longitudinal magnetization returns toward equilibrium with a characteristic time constant T1.
spacer

• View the DATABASE results for 'Relaxation Time' (44).Open this link in a new window

 
Further Reading:
  Basics:
Musculoskeletal MRI at 3.0 T: Relaxation Times and Image Contrast
Sunday, 1 August 2004   by www.ajronline.org    
  News & More:
New technique could allow for safer, more accurate heart scans
Thursday, 10 December 2015   by www.gizmag.com    
Searchterm 'Equilibrium' was also found in the following service: 
spacer
Radiology  (3) Open this link in a new window
Abdominal ImagingMRI Resource Directory:
 - Abdominal Imaging -
 
General MRI of the abdomen can consist of T1 or T2 weighted spin echo, fast spin echo (FSE, TSE) or gradient echo sequences with fat suppression and contrast enhanced MRI techniques. The examined organs include liver, pancreas, spleen, kidneys, adrenals as well as parts of the stomach and intestine (see also gastrointestinal imaging). Respiratory compensation and breath hold imaging is mandatory for a good image quality.
T1 weighted sequences are more sensitive for lesion detection than T2 weighted sequences at 0.5 T, while higher field strengths (greater than 1.0 T), T2 weighted and spoiled gradient echo sequences are used for focal lesion detection. Gradient echo in phase T1 breath hold can be performed as a dynamic series with the ability to visualize the blood distribution. Phases of contrast enhancement include the capillary or arterial dominant phase for demonstrating hypervascular lesions, in liver imaging the portal venous phase demonstrates the maximum difference between the liver and hypovascular lesions, while the equilibrium phase demonstrates interstitial disbursement for edematous and malignant tissues.
Out of phase gradient echo imaging for the abdomen is a lipid-type tissue sensitive sequence and is useful for the visualization of focal hepatic lesions, fatty liver (see also Dixon), hemochromatosis, adrenal lesions and renal masses. The standards for abdominal MRI vary according to clinical sites based on sequence availability and MRI equipment. Specific abdominal imaging coils and liver-specific contrast agents targeted to the healthy liver tissue improve the detection and localization of lesions.
See also Hepatobiliary Contrast Agents, Reticuloendothelial Contrast Agents, and Oral Contrast Agents.

For Ultrasound Imaging (USI) see Abdominal Ultrasound at Medical-Ultrasound-Imaging.com.
 
Images, Movies, Sliders:
 MR Colonography Gadolinium per Rectum  Open this link in a new window
      

Courtesy of  Robert R. Edelman
 Anatomic Imaging of the Liver  Open this link in a new window
      

 CE MRA of the Aorta  Open this link in a new window
    
SlidersSliders Overview

 
spacer

• View the DATABASE results for 'Abdominal Imaging' (11).Open this link in a new window


• View the NEWS results for 'Abdominal Imaging' (3).Open this link in a new window.
 
Further Reading:
  Basics:
Abbreviated MRI Protocols for the Abdomen
Friday, 22 March 2019   by pubs.rsna.org    
Abdominal MRI at 3.0 T: The Basics Revisited
Wednesday, 20 July 2005   by www.ajronline.org    
Usefulness of MR Imaging for Diseases of the Small Intestine: Comparison with CT
2000   by www.ncbi.nlm.nih.gov    
  News & More:
Assessment of Female Pelvic Pathologies: A Cross-Sectional Study Among Patients Undergoing Magnetic Resonance Imaging for Pelvic Assessment at the Maternity and Children Hospital, Qassim Region, Saudi Arabia
Saturday, 7 October 2023   by www.cureus.com    
Higher Visceral, Subcutaneous Fat Levels Predict Brain Volume Loss in Midlife
Wednesday, 4 October 2023   by www.neurologyadvisor.com    
Deep Learning Helps Provide Accurate Kidney Volume Measurements
Tuesday, 27 September 2022   by www.rsna.org    
CT, MRI for pediatric pancreatitis interobserver agreement with INSPPIRE
Friday, 11 March 2022   by www.eurekalert.org    
Clinical trial: Using MRI for prostate cancer diagnosis equals or beats current standard
Thursday, 4 February 2021   by www.eurekalert.org    
Computer-aided detection and diagnosis for prostate cancer based on mono and multi-parametric MRI: A review - Abstract
Tuesday, 28 April 2015   by urotoday.com    
Nottingham scientists exploit MRI technology to assist in the treatment of IBS
Thursday, 9 January 2014   by www.news-medical.net    
New MR sequence helps radiologists more accurately evaluate abnormalities of the uterus and ovaries
Thursday, 23 April 2009   by www.eurekalert.org    
MRI identifies 'hidden' fat that puts adolescents at risk for disease
Tuesday, 27 February 2007   by www.eurekalert.org    
MRI Resources 
MRI Accidents - Shoulder MRI - MRI Reimbursement - Software - Services and Supplies - Blood Flow Imaging
 
previous      6 - 10 (of 36)     next
Result Pages : [1 2]  [3 4 5 6 7 8]
 Random Page
 
Share This Page
FacebookTwitterLinkedIn

MR-TIP    
Community   
User
Pass
Forgot your UserID/Password ?    



MRI is trending to low field magnets :
reduced costs will lead to this change 
AI will close the gap to high field 
only in remote areas 
is only temporary 
never 

Look
      Ups





MR-TIP.com uses cookies! By browsing MR-TIP.com, you agree to our use of cookies.

Magnetic Resonance - Technology Information Portal
Member of SoftWays' Medical Imaging Group - MR-TIP • Radiology-TIP • Medical-Ultrasound-Imaging • 
Copyright © 2003 - 2024 SoftWays. All rights reserved. [ 28 March 2024]
Terms of Use | Privacy Policy | Advertising
 [last update: 2024-02-26 03:41:00]