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

Out-
      side
 



 
 'Brain MRI' 
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 'Brain MRI' found in 1 term [] and 13 definitions [], (+ 14 Boolean[] results
previous     16 - 20 (of 28)     next
Result Pages : [1]  [2 3]  [4 5 6]
Searchterm 'Brain MRI' was also found in the following services: 
spacer
News  (170)  Resources  (28)  Forum  (3)  
 
Signa Infinity 1.5T™ with ExciteInfoSheet: - Devices -
Intro, 
Types of Magnets, 
Overview, 
etc.MRI Resource Directory:
 - Devices -
 
www.gehealthcare.com/usen/mr/s_excite15/index.html From GE Healthcare;
'EXCITE technology has the potential to open the door to new imaging techniques and clinical applications, leaping beyond conventional two and three-dimensional MRI to true 4D imaging that will improve the diagnosis of disease throughout the human body from head to foot.' Robert R. Edelman, M.D., Professor of Radiology at Northwestern University Medical School and Chairman, Department of Radiology, at Evanston Northwestern Healthcare.
Device Information and Specification
CLINICAL APPLICATION
Whole body
CONFIGURATION
Short bore
Head and body coil standard; all other coils optional; open architecture makes system compatible with a wide selection of coils
Optional 2D/3D brain and prostate
SYNCHRONIZATION
ECG/peripheral, respiratory gating, (SmartPrep, SmartStep)
PULSE SEQUENCES
Standard: SE, IR, 2D/3D GRE and SPGR, Angiography: 2D/3D TOF, 2D/3D Phase Contrast;; 2D/3D FSE, 2D/3D FGRE and FSPGR, SSFP, FLAIR, EPI, optional: 2D/3D Fiesta, FGRET, Spiral, Tensor
IMAGING MODES
Localizer, single slice, multislice, volume, fast, POMP, multi slab, cine
TR
1.3 to 12000 msec in increments of 1 msec
TE
0.4 to 2000 msec in increments of 1 msec
SINGLE/MULTI SLICE
Simultaneous scan and reconstruction;; up to 200 or 400 images per second
1 cm to 48 cm continuous
2D 0.7 mm to 20 mm; 3D 0.1 mm to 5 mm
1028 x 1024
MEASURING MATRIX
128x512 steps 32 phase encode
PIXEL INTENSITY
256 gray levels
0.08 mm; 0.02 mm optional
MAGNET WEIGHT
3863 kg
H*W*D
172 x 208 x 216 cm
POWER REQUIREMENTS
480 or 380/415
COOLING SYSTEM TYPE
Closed-loop water-cooled gradient
CRYOGEN USE, L/hr
less than 0.03 L/hr liquid helium
STRENGTH
SmartSpeed 23 mT/m, HiSpeed Plus 33 mT/m, EchoSpeed Plus 33 mT/m
5-GAUSS FRINGE FIELD
4.0 m x 2.8 m axial x radial
Active
spacer
MRI Resources 
Blood Flow Imaging - Patient Information - Implant and Prosthesis - Stent - Databases - Shoulder MRI
 
Signa HDx 3.0T™InfoSheet: - Devices -
Intro, 
Types of Magnets, 
Overview, 
etc.
 
gehealthcare.com/euen/mri/products/signa-hdx-3t/index.html From GE Healthcare;
The Signa HDx MRI system is GE's leading edge whole body magnetic resonance scanner designed to support high resolution, high signal to noise ratio, and short scan times.
Signa HDx 3.0T offers new technologies like ultra-fast image reconstruction through the new XVRE recon engine, advancements in parallel imaging algorithms and the broadest range of premium applications. The HD applications, PROPELLER (high-quality brain imaging extremely resistant to motion artifacts), TRICKS (contrast-enhanced angiographic vascular lower leg imaging), VIBRANT (for breast MRI), LAVA (high resolution liver imaging with shorter breath holds and better organ coverage) and MR Echo (high-definition cardiac images in real time) offer unique capabilities.
Device Information and Specification
CLINICAL APPLICATION
Whole body
CONFIGURATION
Compact short bore
Head and body coil, T/R quadrature head; optional coils e.g., T/R phased array extremity abdomen, spine, breast, knee, shoulder, cardiac imaging coils
SYNCHRONIZATION
ECG/peripheral, respiratory gating
PULSE SEQUENCES
SE, IR, 2D/3D GRE, RF-spoiled GRE, 2DFGRE, 2DFSPGR, 3DFGRE, 3DFSPGR, 3DTOFGRE, 3DFSPGR, 2DFSE, 2DFSE-XL, 2DFSE-IR, T1-FLAIR, SSFSE, EPI, DW-EPI, BRAVO, Angiography: 2D/3D TOF, 2D/3D phase contrast vascular
IMAGING MODES
Single, multislice, volume study, fast scan, multi slab, cine, localizer
1 cm to 40 cm continuous
2D 0.5 mm; 3D 0.1 mm
1024 x 1024
PIXEL INTENSITY
256 gray levels
60 cm
MAGNET WEIGHT
12000 kg
H*W*D
240 x 2216,6 x 201,6 cm
POWER REQUIREMENTS
480 or 380/415, 3 phase ||
COOLING SYSTEM TYPE
Closed-loop water-cooled grad.
0.03 L/hr helium
STRENGTH
23 - 50 mT/m
80 - 150 mT/m/ms
5-GAUSS FRINGE FIELD
2.8 m / 5.0 m
second and high order
spacer
MRI Resources 
Implant and Prosthesis pool - MRI Training Courses - Jobs pool - Journals - MRI Accidents - Nerve Stimulator
 
Signa Infinity 1.5T™ TwinSpeed with ExciteInfoSheet: - Devices -
Intro, 
Types of Magnets, 
Overview, 
etc.MRI Resource Directory:
 - Devices -
 
www.gehealthcare.com/usen/mr/s_excite15/index.html From GE Healthcare;
three dedicated MRI systems - a neuro imager, a cardiovascular system, and a whole body scanner - all in one system.
Device Information and Specification
CLINICAL APPLICATION
Whole body
CONFIGURATION
Short bore
Head and body coil standard; all other coils optional; open architecture makes system compatible with a wide selection of coils
Optional 2D/3D brain and prostate
SYNCHRONIZATION
ECG/peripheral, respiratory gating
PULSE SEQUENCES
Standard: SE, IR, 2D/3D GRE and SPGR, Angiography: 2D/3D TOF, 2D/3D Phase Contrast;; 2D/3D FSE, 2D/3D FGRE and FSPGR, SSFP, FLAIR, EPI, optional: 2D/3D Fiesta, FGRET, Spiral, Tensor
IMAGING MODES
Localizer, single slice, multislice, volume, fast, POMP, multi slab, cine
TR
1.2 to 12000 msec in increments of 1 msec
TE
0.4 to 2000 msec in increments of 1 msec
SINGLE/MULTI SLICE
Simultaneous scan and reconstruction;; up to 200 or 400 images per second
1 cm to 48 cm continuous
2D 0.7 mm to 20 mm; 3D 0.1 mm to 5 mm
1280 x 1024
MEASURING MATRIX
128x512 steps 32 phase encode
PIXEL INTENSITY
256 gray levels
60 cm
MAGNET WEIGHT
3863 kg
H*W*D
172 x 208 x 216 cm
POWER REQUIREMENTS
480 or 380/415
COOLING SYSTEM TYPE
Closed-loop water-cooled gradient
Less than 0.03 L/hr liquid He
STRENGTH
Zoom 40 mT/m, whole body 23 mT/m
5-GAUSS FRINGE FIELD
4.0 m x 2.8 m axial x radial
Active
spacer

• View the DATABASE results for 'Signa Infinity 1.5T™ TwinSpeed with Excite' (2).Open this link in a new window

 
Further Reading:
  News & More:
Twin Gradient Technology - Potential Advantages For Diffusion Weighted MRI(.pdf)
   by www.paulrharvey.co.uk    
Searchterm 'Brain MRI' was also found in the following services: 
spacer
News  (170)  Resources  (28)  Forum  (3)  
 
MAGNETOM Concerto™InfoSheet: - Devices -
Intro, 
Types of Magnets, 
Overview, 
etc.MRI Resource Directory:
 - Devices -
 
www.med.siemens.com/med/d/gg/mr/products/concerto.htm From Siemens Medical Systems;
the MAGNETOM Concerto is easy to site and has low life cycle costs due to the permanent magnet. The powerful gradient system with 20 mT/m and a slew rate of 40 T/m/s permits high field applications on a low field open MRI system. The three-sided fully open magnet results in maximum acceptance of claustrophobic or anxious patients and patient access.
Device Information and Specification
CLINICAL APPLICATION
Whole body
CONFIGURATION
PULSE SEQUENCES
GRE, IR, FIR, STIR, TrueIR/FISP, FSE, MT, SS-FSE, MT-SE, MTC, MSE, GMR, fat/water sat./exc.
IMAGING MODES
Single, multislice, volume study, multi angle
Min 2D/3D: 0.1/0.05 mm
512 x 512 full screen display
MEASURING MATRIX
64 x 64 to 512 x 512
22 micrometer
MAGNET TYPE
Permanent
MAGNET WEIGHT
11 000 kg
POWER REQUIREMENTS
380/400/420/440/480 V
STRENGTH
20 mT/m
Passive, active
spacer

• View the DATABASE results for 'MAGNETOM Concerto™' (2).Open this link in a new window

MRI Resources 
Contrast Agents - Anatomy - Musculoskeletal and Joint MRI - Portals - Libraries - MRCP
 
FlowForum -
related threads
 
Flow phenomena are intrinsic processes in the human body. Organs like the heart, the brain or the kidneys need large amounts of blood and the blood flow varies depending on their degree of activity. Magnetic resonance imaging has a high sensitivity to flow and offers accurate, reproducible, and noninvasive methods for the quantification of flow. MRI flow measurements yield information of blood supply of of various vessels and tissues as well as cerebro spinal fluid movement.
Flow can be measured and visualized with different pulse sequences (e.g. phase contrast sequence, cine sequence, time of flight angiography) or contrast enhanced MRI methods (e.g. perfusion imaging, arterial spin labeling).
The blood volume per time (flow) is measured in: cm3/s or ml/min. The blood flow-velocity decreases gradually dependent on the vessel diameter, from approximately 50 cm per second in arteries with a diameter of around 6 mm like the carotids, to 0.3 cm per second in the small arterioles.

Different flow types in human body:
•
Behaves like stationary tissue, the signal intensity depends on T1, T2 and PD = Stagnant flow
•
Flow with consistent velocities across a vessel = Laminar flow
•
Laminar flow passes through a stricture or stenosis (in the center fast flow, near the walls the flow spirals) = Vortex flow
•
Flow at different velocities that fluctuates = Turbulent flow

See also Flow Effects, Flow Artifact, Flow Quantification, Flow Related Enhancement, Flow Encoding, Flow Void, Cerebro Spinal Fluid Pulsation Artifact, Cardiovascular Imaging and Cardiac MRI.
 
Images, Movies, Sliders:
 MVP Parasternal  Open this link in a new window
    

Courtesy of  Robert R. Edelman
 TOF-MRA Circle of Willis Inverted MIP  Open this link in a new window
    

 Circle of Willis, Time of Flight, MIP  Open this link in a new window
    
SlidersSliders Overview

 
spacer

• View the DATABASE results for 'Flow' (113).Open this link in a new window


• View the NEWS results for 'Flow' (7).Open this link in a new window.
 
Further Reading:
  News & More:
The super-fast MRI scan that could revolutionise heart failure diagnosis
Wednesday, 21 September 2022   by www.eurekalert.org    
MRI Resources 
Health - Pacemaker - Pregnancy - RIS - - Journals
 
previous      16 - 20 (of 28)     next
Result Pages : [1]  [2 3]  [4 5 6]
 Random Page
 
Share This Page
FacebookTwitterLinkedIn

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



New acceleration techniques will :
reduce scan times 
cause artifacts 
increase expenses 
be useful if you have a lot of experience 
doesn't do much 
never heard of 

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. [ 21 November 2024]
Terms of Use | Privacy Policy | Advertising
 [last update: 2024-02-26 03:41:00]