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


Out-
      side
 



 
 '3 phase liver 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 '3 phase liver mri' found in 0 term [] and 0 definition [], (+ 15 Boolean[] results
1 - 5 (of 15)     next
Result Pages : [1 2 3]
Searchterm '3 phase liver mri' was also found in the following service: 
spacer
News  (1)  
 
MAGNETOM Skyra
 
From Siemens Medical Systems;
www.healthcare.siemens.com/magnetic-resonance-imaging/0-35-to-1-5t-mri-scanner/magnetom-skyra/ Received FDA clearance in 2010.
MAGNETOM Skyra is a top-of-the-line, patient friendly wide bore 3 Tesla MRI system.
The system is equipped with the Tim 4G and Dot system (Total imaging matrix and Day optimizing throughput), to enhance both productivity and image quality with the complete range of advanced applications for clinical routine and research. Tim 4G features lighter, trimmer MRI coils that take up less space inside the magnet but deliver a high coil element density with increased signal to noise ratio and the possibility to use high iPAT factors.


Device Information and Specification
CLINICAL APPLICATION Whole Body
CONFIGURATION Open bore
FIELD STRENGTH 3 Tesla
SURFACE COILS Head, spine, torso/ body coil, neurovascular, cardiac, neck, shoulder, knee, wrist, foot//ankle and multi-purpose flex coils. Peripheral vascular, breast, shoulder.
CHANNELS (min. / max. configuration) 48, 64, 128
SPECTROSCOPY Chemical shift imaging, single voxel spectroscopy
IMAGING TECHNIQUES iPAT, mSENSE and GRAPPA (image, k-space),CAIPIRINHA (k-space), noncontrast angiography, plaque imaging, radial motion compensation, Dixon
MINIMUM TR 3D T1 spoiled GRE: 0.95 (256 matrix)
MINIMUM TE 3D T1 spoiled GRE: 0.22 (256 matrix), Ultra-short TE
FOV 0.5 - 50 cm
BORE DIAMETER
or W x H
At isocenter: L-R 70 cm, A-P (with table) 55 cm
TABLE CAPACITY 250 kg
MAGNET WEIGHT (gantry included) 5768 kg
DIMENSION H*W*D (gantry included) 173 x 231 x 219 cm
5-GAUSS FRINGE FIELD 2.6 m / 4.6 m
MAGNET TYPE Superconducting
CRYOGEN USE Zero boil off rate, approx. 10 years
COOLING SYSTEM Water; single cryogen, 2 stage refrigeration
SLEW RATE up to 200 T/m/s
MAX. AMPLITUDE 45 mT/m
SHIMMING 3 linear with 20 coils, 5 nonlinear 2nd-order
POWER REQUIREMENTS 380 / 400 / 420 / 440 / 460 / 480 V, 3-phase + ground; 110 kVA
spacer
 
• Share the entry 'MAGNETOM Skyra':  Facebook  Twitter  LinkedIn  
MRI Resources 
Brain MRI - Knee MRI - Process Analysis - PACS - Mass Spectrometry - Pacemaker
 
Fast Acquisition with Multiphase EFGRE3DInfoSheet: - Sequences - 
Intro, 
Overview, 
Types of, 
etc.
 
(FAME) The FAME MRI technique uses a 3dimensional fast SPGR pulse sequence to acquire high resolution images. With its short scan time, FAME is useful for dynamic liver imaging with multiple phases.
spacer
MRI Resources 
Sequences - Image Quality - Resources - Spectroscopy pool - Pacemaker - Diffusion Weighted Imaging
 
Liver Acquisition with Volume AcquisitionInfoSheet: - Sequences - 
Intro, 
Overview, 
Types of, 
etc.
 
(LAVA) The MRI technique LAVA is based on a 3 dimensional spoiled gradient echo pulse sequence. The optimized inversion pulse and a new fat suppression technique (called segmented special) provides enhanced image contrast and uniform fat suppression. Array spatial sensitivity encoding technique (ASSET) with partial data filling and shorter TR/TE enables to use short breath holds for dynamic liver imaging with multiple phases.
spacer

• View the DATABASE results for 'Liver Acquisition with Volume Acquisition' (3).Open this link in a new window

 
Further Reading:
  Basics:
MR Field Notes
   by www.gehealthcare.com    
Scanning the Abdomen
   by www.mrprotocols.com    
Searchterm '3 phase liver mri' was also found in the following service: 
spacer
News  (1)  
 
Teslascan®InfoSheet: - Contrast Agents - 
Intro, Overview, 
Characteristics, 
Types of, 
etc.MRI Resource Directory:
 - Contrast Agents -
 
(Mn-DPDP) This agent, mangafodipir trisodium, is a hepatocyte specific MRI contrast agent. Manganese is very toxic, so it has to be chelated and put in the form of a vitamin B6 analog, which is taken up by normal hepatocytes to some extent.
Teslascan® was developed in the early 1980's, went through clinical trials in the early 1990's, and was approved in 1997. One problem with assessing the efficacy of this agent is the fact that the phase III trials finished in the early 1990's, and the techniques used for MR today are very different from the techniques used almost a decade ago.
This contrast agent shortens the T1 relaxation time. On T1 weighted pictures it makes a normal liver look brighter. Since metastases, for example, do not generally take up this agent, the contrast between the enhancing liver and the non-enhancing lesions will increase on T1 weighted pictures. It does not have much effect on T2 weighted images.

Drug Information and Specification
NAME OF COMPOUND Mangafodipir trisodium, Manganese dipyroxyl diphosphate, MN-DPDP
DEVELOPER Amersham plc
CENTRAL MOIETY Mn2+
CONTRAST EFFECT T1, Predominantly positive enhancement
RELAXIVITY r1=2.3, r2=4.0, B0=1.0 T
PHARMACOKINETIC Hepatobiliary, pancreatic, adrenal
OSMOLALITY 290 mosm/kgH2O
CONCENTRATION 0.01 mmol/L
DOSAGE 5 µmol/kg, 0.5 ml/kg
PREPARATION Finished product
INDICATION Liver lesions
DEVELOPMENT STAGE Approved
DISTRIBUTOR See below
PRESENTATION Vials of 100 ml
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 Teslascan® for sale GE Healthcare
EU Teslascan® for sale GE Healthcare

spacer

• View the DATABASE results for 'Teslascan®' (4).Open this link in a new window

 
Further Reading:
  Basics:
EMEA - Teslascan - SCIENTIFIC DISCUSSION(.pdf)
   by www.emea.europa.eu    
  News & More:
Diagnosis and staging of pancreatic cancer: comparison of mangafodipir trisodium-enhanced MR imaging and contrast-enhanced helical hydro-CT.
2002
MAGNETIC RESONANCE IMAGING OF FOCAL LIVER LESIONS(.pdf)
2002
MRI Resources 
Databases - Implant and Prosthesis pool - Chemistry - MR Guided Interventions - Spectroscopy - Bioinformatics
 
Sensitivity EncodingInfoSheet: - Sequences - 
Intro, 
Overview, 
Types of, 
etc.
 
(SENSE™) A MRI technique for relevant scan time reduction. The spatial information related to the coils of a receiver array are utilized for reducing conventional Fourier encoding. In principle, SENSE can be applied to any imaging sequence and k-space trajectories. However, it is particularly feasible for Cartesian sampling schemes. In 2D Fourier imaging with common Cartesian sampling of k-space sensitivity encoding by means of a receiver array enables to reduce the number of Fourier encoding steps.
SENSE reconstruction without artifacts relies on accurate knowledge of the individual coil sensitivities. For sensitivity assessment, low-resolution, fully Fourier-encoded reference images are required, obtained with each array element and with a body coil.
The major negative point of parallel imaging techniques is that they diminish SNR in proportion to the numbers of reduction factors. R is the factor by which the number of k-space samples is reduced. In standard Fourier imaging reducing the sampling density results in the reduction of the FOV, causing aliasing. In fact, SENSE reconstruction in the Cartesian case is efficiently performed by first creating one such aliased image for each array element using discrete Fourier transformation (DFT).
The next step then is to create a full-FOV image from the set of intermediate images. To achieve this one must undo the signal superposition underlying the fold-over effect. That is, for each pixel in the reduced FOV the signal contributions from a number of positions in the full FOV need to be separated. These positions form a Cartesian grid corresponding to the size of the reduced FOV.
The advantages are especially true for contrast-enhanced MR imaging such as dynamic liver MRI (liver imaging) , 3 dimensional magnetic resonance angiography (3D MRA), and magnetic resonance cholangiopancreaticography (MRCP).
The excellent scan speed of SENSE allows for acquisition of two separate sets of hepatic MR images within the time regarded as the hepatic arterial-phase (double arterial-phase technique) as well as that of multidetector CT.
SENSE can also increase the time efficiency of spatial signal encoding in 3D MRA. With SENSE, even ultrafast (sub second) 4D MRA can be realized.
For MRCP acquisition, high-resolution 3D MRCP images can be constantly provided by SENSE. This is because SENSE resolves the presence of the severe motion artifacts due to longer acquisition time. Longer acquisition time, which results in diminishing image quality, is the greatest problem for 3D MRCP imaging.
In addition, SENSE reduces the train of gradient echoes in combination with a faster k-space traversal per unit time, thereby dramatically improving the image quality of single shot echo planar imaging (i.e. T2 weighted, diffusion weighted imaging).
spacer

• View the DATABASE results for 'Sensitivity Encoding' (12).Open this link in a new window

 
Further Reading:
  News & More:
Image Characteristics and Quality
   by www.sprawls.org    
MRI Resources 
Jobs pool - MRCP - Implant and Prosthesis pool - Nerve Stimulator - - Developers
 
     1 - 5 (of 15)     next
Result Pages : [1 2 3]
 Random Page
 
Share This Page
FacebookTwitterLinkedIn

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



Your new MRI scanner in 2020 will be shipped from :
China 
Europe 
India 
Japan 
USA 
other 

Look
      Ups





Magnetic Resonance - Technology Information Portal
Member of SoftWays' Medical Imaging Group - MR-TIP • Radiology-TIP • US-TIP • The-Medical-Market
Copyright © 2003 - 2014 SoftWays. All rights reserved. [ 17 September 2014]
Terms of Use | Privacy Policy | Advertising
 [last update: 2014-09-15 04:35:28]