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

Out-
      side
 



 
 MRI Database 
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
previous     56 - 60 (of 167)     next 
S--Sa   Sa-Sc   Sc-Se   Se-Se   Se-Se   Se-Se   Sh-Sh   Sh-SH   Sh-Sh   SH-Si   Si-Si   Si-Si     Si-Si   Si-Si   Si-Si   Sk-Sl   Sl-Sl   Sl-So   So-Sp   Sp-Sp   Sp-Sp   Sp-Sp   SP-Sp   Sp-Sp   Sp-Sp   Sp-Sp   Sp-St   St-St   St-St   St-Su   Su-Su   Su-Sw   Sy-Sy   Sy-Sy   
MRI Resources 
Pacemaker - Fluorescence - Crystallography - Contrast Enhanced MRI - Spectroscopy pool - MRI Physics
 
Signa OpenSpeed™InfoSheet: - Devices -
Intro, 
Types of Magnets, 
Overview, etc.MRI Resource Directory:
 - Devices -
 
www.gehealthcare.com/usen/mr/open_speed/index.html From GE Healthcare;
a friendly and less confining appearance targets the 7% of individuals who refuse to have an MRI because of claustrophobia. This open MRI system is also up to three times faster than other scanners, therefore the Signa OpenSpeed™ reducing exam time and scheduling issues. In addition, a swing table provides better access and supports up to 500 pounds.
Device Information and Specification
CLINICAL APPLICATION
Whole body
CONFIGURATION
Integrated transmit and receive body coil; 4 channel head array, 8 channel CTL array, 2 channel shoulder array, 3 channel large extremity array, 3 channel small extremity array, 4 channel foot array, 3 channel wrist array, 4 channel breast array
SYNCHRONIZATION
Standard cardiac gating, 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
1.3 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;; 100 images/second with Reflex 100
1cm to 40 cm continuous
2D: 0.8mm - 20mm 3D: 0.1mm - 20mm
1280 x 1024
MEASURING MATRIX
128x512 steps 32 phase//freq.
PIXEL INTENSITY
256 gray levels
0.08 mm; 0.02 mm optional
175 x 85 x 447 cm
MAGNET WEIGHT
8256 kg
H*W*D
530 x 175 x 250 cm
POWER REQUIREMENTS
200 - 480, 3-phase
COOLING SYSTEM TYPE
Liquid helium
0.03 L/hr, holds 300 L
STRENGTH
25 mT/m
5-GAUSS FRINGE FIELD
4.7 m/ 3.8 m
Computerized passive shimming during magnet setup, autoshim per series with automatic table motion to magnet isocenter for each prescription
spacer

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

 
Further Reading:
  News & More:
MR Surgical Suite, Improving surgical procedure quality (.pdf)
   by www3.gehealthcare.com    
Signa Ovation™InfoSheet: - Devices -
Intro, 
Types of Magnets, 
Overview, etc.MRI Resource Directory:
 - Devices -
 
www.gehealthcare.com/usen/mr/ovation/index.html From GE Healthcare;
the Signa Ovation™ is a patient-friendly open MRI scanner designed not only to handle a typical patient mix, but to accommodate larger patients, patients who are claustrophobic, and others who have difficulty tolerating the close quarters of conventional MR machines.
Device Information and Specification
CLINICAL APPLICATION
Whole body
CONFIGURATION
Integrated transmit and receive body coil; head coil, 4 channel neurovascular array, 8 channel CTL array, 2 channel shoulder array, 3 channel large extremity array, 3 channel small extremity array, 4 channel foot array, 3 channel wrist array
SYNCHRONIZATION
Standard cardiac gating, ECG/peripheral, respiratory gating
PULSE SEQUENCES
Standard: SE, IR, 2D/3D GRE and SPGR, 2D/3D TOF, 2D/3D FSE, 2D/3D FGRE and FSPGR, SSFP, FLAIR, EPI, optional: 2D/3D Fiesta, true chem sat, fat/water separation, single shot diffusion EPI, line scan diffusion
IMAGING MODES
Localizer, single slice, multislice, volume, fast, POMP, multi slab, cine, slice and frequency zip, extended dynamic range, tailored RF
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;; 80 images/second reconstruction
3cm to 40 cm continuous
2D: 1.4mm - 20mm 3D: 0.2mm - 20mm
1280 x 1024
MEASURING MATRIX
128x512 steps 32 phase//freq.
PIXEL INTENSITY
256 gray levels
0.08 mm; 0.02 mm optional
MAGNET TYPE
Permanent
175 x 85 x 447 cm
MAGNET WEIGHT
19200 kg
H*W*D
530 x 175 x 250 cm
POWER REQUIREMENTS
200 - 480, 3-phase
GRADIENT COOLING
None
MAX. GRADIENT AMPLITUDE
19 mT/m
5-GAUSS FRINGE FIELD
2.5 m/2.5 m
Computerized passive shimming during magnet setup, autoshim per series with automatic table motion to magnet isocenter for each prescription
spacer

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

MRI Resources 
Contrast Agents - Directories - Service and Support - Brain MRI - Used and Refurbished MRI Equipment - Quality Advice
 
Signa Profile™InfoSheet: - Devices -
Intro, 
Types of Magnets, 
Overview, etc.MRI Resource Directory:
 - Devices -
 
www.gehealthcare.com/usen/mr/profilei/index.html From GE Healthcare;
the New Signa Profile/i is a patient friendly open MRI system that virtually eliminates patient anxiety and claustrophobia, without compromising diagnostic utility.
Device Information and Specification
CLINICAL APPLICATION
Whole body
CONFIGURATION
Integrated transmit body coil, body flex sizes: M, L, XL, quadrature, head coil quadrature, 4 channel neurovascular array, 8 channel CTL array, quad. c-spine, 2 channel shoulder array, extremity coil, 3 channel wrist array, 4 channel breast array, 6, 9, 11 inch general purpose loop coils
SYNCHRONIZATION
Standard cardiac gating, 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 FRFSE, FGRE and FSPGR, SSFP, FLAIR, EPI, optional: 2D/3D Fiesta, fat/water separation, T1 FLAIR
IMAGING MODES
Localizer, single slice, multislice, volume, fast, POMP, multi slab, cine, slice and frequency zip, extended dynamic range, tailored RF
TR
6 to 12000 msec in increments of 1 msec
TE
1.3 to 2000 msec in increments of 1 msec
SINGLE/MULTI SLICE
Simultaneous scan and reconstruction;; 80 images/second reconstruction
3cm to 40 cm continuous
2D: 2.7mm - 20mm 3D: 0.2mm - 5mm
1280 x 1024
MEASURING MATRIX
128x512 steps 32 phase//freq.
PIXEL INTENSITY
256 gray levels
0.08 mm; 0.02 mm optional
MAGNET TYPE
Permanent
120 x 44 cm
MAGNET WEIGHT
10,000 kg w/gradient enclosure
H*W*D
147 x 214 x 193 cm
POWER REQUIREMENTS
200 - 480, 3-phase
COOLING SYSTEM TYPE
None required
STRENGTH
15 mT/m
5-GAUSS FRINGE FIELD
1.7 m/1.7 m
spacer

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

Signa SP 0.5T™ Open ConfigurationInfoSheet: - Devices -
Intro, 
Types of Magnets, 
Overview, etc.MRI Resource Directory:
 - Devices -
 
www.gehealthcare.com/usen/mr/index.html From GE Healthcare;
The Signa SP 0.5T™ is an open MRI magnet that is designed for use in interventional radiology and intra-operative imaging. The vertical gap configuration increases patient positioning options, improves patient observation, and allows continuous access to the patient during imaging. The magnet enclosure also incorporates an intercom, patient observation video camera, laser patient alignment lights, and task lighting in the imaging volume.
Device Information and Specification
CLINICAL APPLICATION
Whole body
CONFIGURATION
Open
Integrated transmit and receive body coil; optional rotational body coil, head; other coils optional; open architecture makes system compatible with a wide selection of coilsarray
SYNCHRONIZATION
Standard cardiac gating, ECG/peripheral, respiratory gating
PULSE SEQUENCES
Standard: SE, IR, 2D/3D GRE and SPGR, 2D/3D TOF, 2D/3D FSE, 2D/3D FGRE and FSPGR, SSFP, FLAIR, EPI, optional: 2D/3D Fiesta, true chem sat, fat/water separation, single shot diffusion EPI
IMAGING MODES
Localizer, single slice, multislice, volume, fast, POMP, multi slab, cine, slice and frequency zip, extended dynamic range, tailored RF
TR
1.3 to 12000 msec in increments of 1 msec
TE
0.4 to 2000 msec in increments of 1 msec
3cm to 40 cm continuous
2D: 1.4mm - 20mm 3D: 0.2mm - 20mm
1280 x 1024
MEASURING MATRIX
128x512 steps 32 phase//freq.
PIXEL INTENSITY
256 gray levels
60 x 58 cm
POWER REQUIREMENTS
200 - 480, 3-phase
COOLING SYSTEM TYPE
Liquid helium
0.03 L/hr, holds 300 L
STRENGTH
12 mT/m
Active
spacer

• View the DATABASE results for 'Signa SP 0.5T™ Open Configuration' (2).Open this link in a new window

 
Further Reading:
  News & More:
MR Surgical Suite, Improving surgical procedure quality (.pdf)
   by www3.gehealthcare.com    
Signal Averaging
 
A signal to noise improvement method that is accomplished by taking the average of several FID`s made under similar conditions to suppress the effects of random variations or random artifacts. It is a common method to increase the SNR by averaging several measurements of the signal.
The number of averages is also referred to as the number of excitations (NEX) or the number of acquisitions (NSA). Doubling the number of acquisitions will increase the SNR by √2. The approximate amount of improvement in signal to noise (SNR) ratio is calculated as the square root of the number of excitations.
By using multiple averages, respiratory motion can be reduced in the same way that multiple averages increase the signal to noise ratio. NEX/NSA will increase SNR but will not affect contrast unless the tissues are being lost in noise (low CNR). Scan time scales directly with NEX/NSA and SNR as the square root of NEX/NSA.
The use of phase array coils allows the number of signal averages to be decreased with their superior SNR and resolution, thereby decreasing scan time.
spacer

• View the DATABASE results for 'Signal Averaging' (6).Open this link in a new window

MRI Resources 
Service and Support - Manufacturers - Abdominal Imaging - MR Myelography - Pathology - MRI Technician and Technologist Jobs
 
previous       56 - 60 (of 167)      next 
S--Sa   Sa-Sc   Sc-Se   Se-Se   Se-Se   Se-Se   Sh-Sh   Sh-SH   Sh-Sh   SH-Si   Si-Si    Si-Si    Si-Si   Si-Si   Si-Si   Sk-Sl   Sl-Sl   Sl-So   So-Sp   Sp-Sp   Sp-Sp   Sp-Sp   SP-Sp   Sp-Sp   Sp-Sp   Sp-Sp   Sp-St   St-St   St-St   St-Su   Su-Su   Su-Sw   Sy-Sy   Sy-Sy   
 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. [ 29 March 2024]
Terms of Use | Privacy Policy | Advertising
 [last update: 2024-02-26 03:41:00]