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 '3 Tesla' 
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Result : Searchterm '3 Tesla' found in 0 term [] and 12 definitions [], (+ 10 Boolean[] results
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MAGNETOM Prisma
 
From Siemens Medical Systems;
www.healthcare.siemens.com/magnetic-resonance-imaging/3t-mri-scanner/magnetom-prisma Received FDA clearance in 2013.
The MAGNETOM Prisma is the 3T PowerPack for exploration that offers most demanding clinical and research challenges of today and the future. The latest parallel transmit technology, TimTX TrueShape, enables zooming into specific body regions for enhanced image quality. Furthermore, the Tim 4G integrated coil technology offers remarkable imaging flexibility and supports complex examinations across the whole body.
Onsite upgrades to the MAGNETOM Prisma for customers who have already installed the 3 Tesla MAGNETOM Trio are possible.


Device Information and Specification
CLINICAL APPLICATION Whole Body
CONFIGURATION Ultra-short 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) 64, 128
SPECTROSCOPY Yes
IMAGING TECHNIQUES iPAT, mSENSE and GRAPPA (image, k-space), noncontrast angiography, radial motion compensation, Dixon
FOV 0.5 - 50 cm
BORE DIAMETER
or W x H
At isocenter: L-R 60 cm
TABLE CAPACITY 250 kg
MAGNET WEIGHT (gantry included) 13000 kg
DIMENSION H*W*D (gantry included) 173 x 230 x 222 cm
5-GAUSS FRINGE FIELD 2.6 m / 4.6 m
MAGNET TYPE Superconducting
CRYOGEN USE Zero boil off rate, refill approx. 10 years
COOLING SYSTEM Water
SLEW RATE up to 200 T/m/s
MAX. AMPLITUDE 80 mT/m
SHIMMING Passive, active; first order, second order
POWER REQUIREMENTS 380 / 400 / 420 / 440 / 460 / 480 V, 3-phase + ground;
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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
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MAGNETOM Spectra
 
From Siemens Medical Systems;
www.healthcare.siemens.com/magnetic-resonance-imaging/3t-mri-scanner/magnetom-spectra Received FDA clearance in 2012.
The MAGNETOM Spectra is a cost-optimized high field MRI system with Tim 4G and Dot technologies. The system consumes less energy compared to other 3 Tesla scanners. The magnet-cooling helium is contained in a closed loop, which prevents the gas from escaping and reduces the need for refills. TimTX includes innovative techniques in the radio frequency excitation hardware as well as new application and processing features enabling uniform RF distribution in all body regions.


Device Information and Specification
CLINICAL APPLICATION Whole Body
CONFIGURATION Short bore
FIELD STRENGTH 3 Tesla
SURFACE COILS Head, spine, torso/ body coil, neurovascular, neck and multi-purpose flex coils. Peripheral vascular, breast, shoulder, knee, wrist, foot//ankle, endorectal optional.
CHANNELS 24
SPECTROSCOPY Chemical shift imaging, single voxel spectroscopy
IMAGING TECHNIQUES iPAT, mSENSE and GRAPPA (image, k-space), noncontrast angiography, radial motion compensation
FOV 0.5 - 45 cm
BORE DIAMETER
or W x H
At isocenter: L-R 60 cm
TABLE CAPACITY 200 kg
MAGNET WEIGHT 7200 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 125 T/m/s
MAX. AMPLITUDE 33 mT/m
SHIMMING Passive, active; first order standard, second order optional
POWER REQUIREMENTS 380 / 400 / 420 / 440 / 460 / 480 V, 3-phase + ground; connection value with chiller 100 kvA /without chiller 60 kVA
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Biograph mMR
 
From Siemens Medical Systems;
www.healthcare.siemens.com/magnetic-resonance-imaging/mr-pet-scanner/biograph-mmr FDA cleared and CE Mark 2011.
The Biograph mMR has a fully-integrated design for simultaneous PET/MRI imaging. The dedicated hardware includes solid-state, avalanche photodiode PET detector and adapted, PET-compatible MR coils.
The possibility of truly simultaneous operation allows the acquisition of several magnetic resonance imaging (MRI) sequences during the positron emission tomography (PET) scan, without increasing the examination time.


Device Information and Specification
CLINICAL APPLICATION Whole Body
CONFIGURATION Simultaneous PET/MRI
FIELD STRENGTH 3 Tesla
SURFACE COILS Full range of MRI coils
CHANNELS up to 32
PET ACQUISITION MODES 3D
MRI ACQUISITION MODES 2D/3D, spectroscopy;; iPAT, GRAPPA (k-space), noncontrast angiography, radial motion compensation
PET EFFECTIVE AXIAL FOV 26 cm (typical overlap 23%)
MRI FOV A-P 45, R-L 50, H-F 50 cm
PET RING DIAMETER 65.6 cm
BORE DIAMETER 60 cm
PATIENT SCAN RANGE 199 cm
HORIZONTAL SPEED 200 mmsec
TABLE CAPACITY 200 kg
PET DETECTOR Solid state, 4032 avalanche photo diodes
DETECTOR SCINTILLATION MATERIAL LSO, 28672 crystals
CRYSTAL SIZE 4 x 4 x 20 mm
MAGNET WEIGHT 9000 kg
DIMENSION H*W*D (gantry included) 335 x 230 x 242 cm (finshed covers)
5-GAUSS FRINGE FIELD 2.6 m / 4.6 m
MAGNET TYPE Superconducting
CRYOGEN USE Zero boil off rate, approx. 10 years
COOLING SYSTEM PET system: water; MRI system: water
SLEW RATE up to 200 T/m/s
MAX. AMPLITUDE 45 mT/m
SHIMMING Aautomatic, patient specific shim; active shim 3 linear and 5 non-linear channels (seond order)
POWER REQUIREMENTS 380 / 400 / 420 / 440 / 460 / 480 V, 3-phase + ground; Total system 110kW
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Further Reading:
  Basics:
Performance Measurements of the Siemens mMR Integrated Whole-Body PET/MR Scanner
Friday, 11 November 2011   by jnm.snmjournals.org    
Global Trends in Hybrid Imaging
Monday, 1 November 2010   by pubs.rsna.org    
  News & More:
Positron Emission Tomographic Imaging in Stroke
Monday, 28 December 2015   by www.ncbi.nlm.nih.gov    
A world's first in imaging – integrated whole-body molecular MR system available for clinical use testing
Thursday, 18 November 2010   by www.siemens.com    
FDA Clears New System to Perform Simultaneous PET, MRI Scans
Friday, 10 June 2011   by www.prnewswire.com    
Frost & Sullivan Award Underlines Siemens Healthcare's Contribution to New Product Innovation in the North American Medical Imaging Market
Wednesday, 13 July 2011   by multivu.prnewswire.com    
MRI Resources 
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Duty Cycle
 
Duty cycle is the time during which the gradient system can be run at maximum power. The duty cycle is based on the total time and includes the cool down phase. The duty cycle on the RF pulse during MRI is restricted based on the specific absorption rate (SAR) limit.
SAR limits restrict radio frequency heating effects. The specific absorption rate increases with field strength, radio frequency power and duty cycle, type of the transmitter coil and body size. The especially in high and ultrahigh magnetic fields, important SAR issue can be readily addressed by reducing the RF duty cycle due to longer repetition times (TR) and the use of parallel imaging techniques. A TR longer than the minimum needed provides time for the tissue to cool down, but for the cost of a longer scan time. A parallel imaging technique reduces the RF exposure and the scan time.
See also High Field MRI (3 tesla 3T).
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