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 'Pulse Sequence' 
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Result : Searchterm 'Pulse Sequence' found in 5 terms [] and 166 definitions []
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Searchterm 'Pulse Sequence' was also found in the following services: 
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News  (2)  Resources  (5)  Forum  (10)  
 
Intravoxel Incoherent Motion
 
(IVIM) Spins moving in fluids with different velocities and possibly in different directions. This is being found to a small degree in all tissues as a result of capillary perfusion or diffusion. Important velocity changes occur as one moves from the vessel wall towards the center of the vessel. Hence, spins (to a variable degree) have different velocities within a single imaging voxel.
This effect can be measured using special pulse sequences such as in diffusion imaging or diffusion weighed imaging. When the velocity differences are marked, as occurs in larger blood vessels, effects due to IVIM are visible in standard MR images and give rise to flow related dephasing. The effects are more visible when longer echo times are used.
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Further Reading:
  Basics:
Diffusion Imaging: From Basic Physics to Practical Imaging
1999   by ej.rsna.org    
  News & More:
EVALUATION OF HUMAN STROKE BY MR IMAGING
2000
Technical Assessment of Artifact Production from Neuro Endovascular Coil At 3 Tesla MRI: An In Vitro Study
2012   by www.tmps.or.th    
Searchterm 'Pulse Sequence' was also found in the following service: 
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Ultrasound  (1) Open this link in a new window
Inversion TimeInfoSheet: - Sequences - 
Intro, 
Overview, 
Types of, 
etc.
 
(TI) The time period between the 180° inversion pulse and the 90° excitation pulse in an inversion recovery pulse sequence. The inversion time controls the signal of different tissues and with the change of this parameter also fat and water suppression is attainable.
 
Images, Movies, Sliders:
 Knee MRI Sagittal STIR 002  Open this link in a new window
 Brain MRI Coronal FLAIR 001  Open this link in a new window
 
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• View the DATABASE results for 'Inversion Time' (14).Open this link in a new window

 
Further Reading:
  News & More:
Study identifies new way to predict prognosis for heart failure patients
Tuesday, 10 December 2013   by medicalxpress.com    
MRI Resources 
Fluorescence - Distributors - Corporations - Directories - Shoulder MRI - MR Myelography
 
Jet Effect
 
Spin dephasing for complex flow patterns like turbulence. This effect must be taken into account when evaluating the extent of vascular stenosis. The degree of the signal loss depends on the flow model and pulse sequence used.
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Searchterm 'Pulse Sequence' was also found in the following services: 
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News  (2)  Resources  (5)  Forum  (10)  
 
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.
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• 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 'Pulse Sequence' was also found in the following service: 
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Ultrasound  (1) Open this link in a new window
MAGNETOM Avanto™InfoSheet: - Devices -
Intro, 
Types of Magnets, 
Overview, 
etc.MRI Resource Directory:
 - Devices -
 
From Siemens Medical Systems;
test.med.siemens.com/magnetom/rsna_chicago_2003/tim/avanto/index.php MAGNETOM Avanto with Tim - Total imaging matrix technology. For true whole-body anatomical coverage. For ultra-fast image acquisition. Aids the physician in fast and precise evaluation of systemic diseases like colon cancer, metastasis imaging, vessel diseases, and preventional exams. For claustrophobic patients, MAGNETOM Avanto enables feetfirst exams for nearly all MR procedures. For obese patients, MAGNETOM Avanto supports up to 200 kg (400 lbs), without table movement restrictions. The AudioComfort technology enables up to a 30 dB(A) acoustic noise reduction, that means nearly all clinical routine sequences are running under 99 dB(A).

Device Information and Specification
CLINICAL APPLICATION Whole body
CONFIGURATION Compact short bore
SURFACE COILS Body, Tim [32 x 8], Tim [76 x18], Tim [76 coil elements with up to 32 RF channels]
SPECTROSCOPY Yes/SVS or CSI opt.
SYNCHRONIZATION ECG/peripheral, respiratory gating
PULSE SEQUENCES GRE, IR, FIR, STIR, TrueIR/FISP, FSE, FLAIR, MT, SS-FSE, MT-SE, MTC, MSE, EPI, 3D DESS//CISS/PSIF, GMR
IMAGING MODES Single, multislice, volume study, multi angle, multi oblique
FOV 0.5 cm - 50 cm
SLICE THICKNESS Min 2D/3D: 0.1/0.05 mm
DISPLAY MATRIX 1024 x 1024 full screen display
MEASURING MATRIX 64 x 64 to 1024 x 1024
SPATIAL RESOLUTION 10 micrometer in plane
MAGNET TYPE Superconducting
BORE DIAMETER
or W x H
60 cm
POWER REQUIREMENTS 380/400/420/440/480 V
FIELD STRENGTH 1.5 T
STRENGTH up to 45 mT/m
5-GAUSS FRINGE FIELD 2.5 m / 4.0 m
SHIMMING Passive, act.; 1st order std./2nd opt.
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• View the DATABASE results for 'MAGNETOM Avanto™' (2).Open this link in a new window

 
Further Reading:
  Basics:
12 510(k) MAGNETOM Avanto System(.pdf)
   by www.accessdata.fda.gov    
  News & More:
Obesity May Influence Imaging Diagnosis
Wednesday, 22 December 2004   by www.hospimedica.com    
MRI Resources 
Directories - MRI Technician and Technologist Career - Developers - Corporations - Breast MRI - Health
 
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Acoustic Noise Reduction (Silent, Quiet, etc.) :
cannot get better 
is in its first steps 
is done by earplugs, headphones 
must get better 
is bad, I miss something 
is unnecessary 

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