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Result : Searchterm 'Diffusion' found in 8 terms [] and 36 definitions []
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Searchterm 'Diffusion' was also found in the following services: 
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News  (29)  Resources  (8)  Forum  (13)  
 
Panorama 0.23Tâ„¢InfoSheet: - Devices -
Intro, 
Types of Magnets, 
Overview, 
etc.MRI Resource Directory:
 - Devices -
 
www.medical.philips.com/main/products/mri/products/panoramafamily/panorama0.23t_rt/features/ From Philips Medical Systems;
the Panorama 0.23 T, providing a new design optimized for patient comfort, faster reconstruction time than before (300 images/second) and new gradient specifications. Philips' Panorama 0.23 T I/T supports MR-guided interventions, resulting in minimally invasive procedures, more targeted surgery, reduced recovery time and shorter hospital stays. Optional OptoGuide functionality enables real-time needle tracking. Philips' Panorama 0.23 TPanorama 0.2 R/T is the first and only open MRI system to enable radiation therapy planning using MR data sets. The Panorama also features the new and consistent Philips User Interface, an essential element of the Vequion clinical IT family of products and services.
Device Information and Specification
CLINICAL APPLICATION
Whole body
CONFIGURATION
Open MRI/C-arm
Head, head-neck, extremity M-L, neck, body/spine S-XL, shoulder, bilateral breast, wrist, TMJ, flex XS-S-M-L-XL-XXL
SYNCHRONIZATION
ECG/peripheral: Optional/optional, respiratory gating
PULSE SEQUENCES
SE, FE, IR, FFE, DEFFE, DESE, TSE, DETSE, Single shot SE, DRIVE, Balanced FFE, MRCP, Fluid Attenuated Inversion Recovery, Turbo FLAIR, IR-TSE, T1-STIR TSE, T2-STIR TSE, Diffusion Imaging, 3D SE, 3D FFE, MTC;; Angiography: CE-ANGIO, MRA 2D, 3D TOF
IMAGING MODES
Single, multislice, volume study, dynamic, SIMEX, multi chunk 3D, multiple stacks
TR
Min. 6.2 msec
TE
Min. 2.8 msec
SINGLE/MULTI SLICE
50 slices/sec
0.4 cm - 40 cm
1280 X 1024
MEASURING MATRIX
Up to 512 x 512
PIXEL INTENSITY
256 gray scale
MAGNET TYPE
Resistive/iron core
Open x 46 cm x infinite (side-first patient entry)
MAGNET WEIGHT
13110 kg
H*W*D
196 x 121 x 176 cm
POWER REQUIREMENTS
400/480 V
COOLING SYSTEM TYPE
Closed loop chilled water (chiller included)
N/A
STRENGTH
19 mT/m
5-GAUSS FRINGE FIELD
2.4 m / 3.7 m
Passive/active
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Further Reading:
  News & More:
Magnetic resonance imaging guided musculoskeletal interventions at 0.23T: Chapter 4. Materials and methods
2002
Searchterm 'Diffusion' was also found in the following services: 
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Radiology  (1) Open this link in a new windowUltrasound  (2) Open this link in a new window
Panorama 0.6TPanorama 0.2InfoSheet: - Devices -
Intro, 
Types of Magnets, 
Overview, 
etc.MRI Resource Directory:
 - Devices -
 
www.medical.philips.com/main/products/mri/products/panoramafamily/panorama0.23t_rt/features/ From Philips Medical Systems;
Panorama 0.6 T is the Philips Mid-Field Open MRI system. It is the most open MR scanner in the market, optimized for patient comfort and faster reconstruction time.
Device Information and Specification
CLINICAL APPLICATION
Whole body
CONFIGURATION
Open MRI/C-arm
Head, head-neck, extremity, neck, body/spine M-XL, shoulder, bilateral breast, wrist, TMJ, flex XS-S-M-L-XL-XXL
SYNCHRONIZATION
ECG/peripheral: Optional/yes, respiratory gating
PULSE SEQUENCES
SE, FE, IR, STIR, FFE, DEFFE, DESE, TSE, DETSE, Single shot SE, DRIVE, Balanced FFE, MRCP, Fluid Attenuated Inversion Recovery, Turbo FLAIR, IR-TSE, T1-STIR TSE, T2-STIR TSE, Diffusion Imaging, 3D SE, 3D FFE, Contrast Perfusion Analysis, MTC;; Angiography: CE-ANGIO, MRA 2D, 3D TOF
IMAGING MODES
Single, multislice, volume study, dynamic, SIMEX, multi chunk 3D, multiple stacks
TR
Min. 4.6 msec
TE
Min. 2.3 msec
SINGLE/MULTI SLICE
50 slices/sec
0.4 cm - 42 cm
1280 X 1024
MEASURING MATRIX
Up to 512 x 512
PIXEL INTENSITY
256 gray scale
MAGNET TYPE
Superconducting / iron core
Open x 47 cm x infinite (side-first patient entry)
MAGNET WEIGHT
38000 kg
H*W*D
254 x 244 x 325 cm
POWER REQUIREMENTS
400/480 V
COOLING SYSTEM TYPE
Liquid helium//air cool
0.00 L/hr helium
STRENGTH
20 mT/m
5-GAUSS FRINGE FIELD
2.4 m / 2.5 m
Passive/active
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• View the DATABASE results for 'Panorama 0.6T™' (2).Open this link in a new window

MRI Resources 
MRCP - PACS - Pediatric and Fetal MRI - Jobs pool - DICOM - Breast Implant
 
Panorama 1.0Tâ„¢InfoSheet: - Devices -
Intro, 
Types of Magnets, 
Overview, 
etc.MRI Resource Directory:
 - Devices -
 
www.medical.philips.com/main/products/mri/products/panoramafamily/panorama1.0t_rt/features/ From Philips Medical Systems;
this active shielded member of the Panorama product line combines the advantages of one 1.0 T system's with the possibilities of an open MRI system. The open design helps ease anxiety for claustrophobic patients and increased patient comfort whereby the field strength provides spectacular image quality and fast patient throughput.
Device Information and Specification
CLINICAL APPLICATION
Whole body
CONFIGURATION
Vertical Field open MRI post design
Vertically opposed solenoids, head, head-neck, extremity, neck, body/spine M-XL, shoulder, bilateral breast, wrist, TMJ, flex XS-S-M-L-XL-XXL
SYNCHRONIZATION
ECG/peripheral: Optional/yes, respiratory gating
PULSE SEQUENCES
SE, FE, IR, STIR, FFE, DEFFE, DESE, TSE, DETSE, Single shot SE, DRIVE, Balanced FFE, MRCP, FLAIR, Turbo FLAIR, IR-TSE, T1-STIR TSE, T2-STIR TSE, Diffusion Imaging, 3D SE, 3D FFE, Contrast Perfusion Analysis, MTC;; Angiography: CE-ANGIO, MRA 2D, 3D TOF
IMAGING MODES
Single, multislice, volume study, dynamic, SIMEX, multi chunk 3D, multiple stacks
TR
Min. 4.6 msec
TE
Min. 2.3 msec
SINGLE/MULTI SLICE
50 slices/sec
0.4 cm - 42 cm
1280 X 1024
MEASURING MATRIX
Up to 512 x 512
PIXEL INTENSITY
256 gray scale
Open x 47 cm x infinite (side-first patient entry)
MAGNET WEIGHT
H*W*D
POWER REQUIREMENTS
400/480 V
COOLING SYSTEM TYPE
Liquid helium
STRENGTH
20 mT/m
5-GAUSS FRINGE FIELD
Passive/active
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• View the DATABASE results for 'Panorama 1.0T™' (2).Open this link in a new window

Searchterm 'Diffusion' was also found in the following services: 
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News  (29)  Resources  (8)  Forum  (13)  
 
Point Resolved SpectroscopyInfoSheet: - Sequences - 
Intro, 
Overview, 
Types of, 
etc.
 
(PRESS) Point resolved spectroscopy is a multi echo single shot technique to obtain spectral data. PRESS is a 90°-180°-180° (slice selective pulses) sequence. The 90° radio frequency pulse rotates the spins in the yx-plane, followed by the first 180° pulse (spin rotation in the xz-plane) and the second 180° pulse (spin rotation in the xy-plane), which gives the signal.
With the long echo times used in PRESS, there is a better visualization of metabolites with longer relaxation times. Many of the metabolites depicted by stimulated echo technique are not seen on point resolved spectroscopy, but PRESS is less susceptible to motion, diffusion, and quantum effects and has a better SNR than stimulated echo acquisition mode (STEAM).
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• View the DATABASE results for 'Point Resolved Spectroscopy' (3).Open this link in a new window

 
Further Reading:
  Basics:
The Basics of MRI
   by www.cis.rit.edu    
  News & More:
MRI evaluation of fatty liver in day to day practice: Quantitative and qualitative methods
Wednesday, 3 September 2014   by www.sciencedirect.com    
Searchterm 'Diffusion' was also found in the following services: 
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Radiology  (1) Open this link in a new windowUltrasound  (2) Open this link in a new window
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).
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• 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 
PACS - Equipment - Implant and Prosthesis - Knee MRI - Pediatric and Fetal MRI - Journals
 
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