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Result : Searchterm 'Magnetic Resonance' found in 21 terms [] and 109 definitions []
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Searchterm 'Magnetic Resonance' was also found in the following services: 
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News  (787)  Resources  (181)  Forum  (1)  
 
Imaging CoilInfoSheet: - Coils - 
Intro, 
Overview, 
etc.MRI Resource Directory:
 - Coils -
 
Imaging coils are radio frequency coils used in magnetic resonance imaging for sending and/or receiving electromagnetic radiation. Several MR imaging coils in different shapes and sizes are necessary for different body parts and to handle individual applications.
For Example:
Birdcage coils provide high homogeneity and good signal to noise ratio (SNR) in brain MRI scans.
Surface coils with small coil diameter and higher SNR enable to image the temporomandibular joints (TMJ).
The implemented body coil allows the scanning of body parts with large field of views.
Micro coils are available to image finger joints.
High performance phased array coils are today state-of-the-art for a wide range of applications from head, spine, knee or shoulder to cardiac MRI.
For different types of coils see Volume Coil, Sense Coil, Array Coil, Surface Coil, and Bird Cage Coil.

See also the related poll result: '3rd party coils are better than the original manufacturer coils'
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• View the NEWS results for 'Imaging Coil' (9).Open this link in a new window.
 
Further Reading:
  Basics:
Radio-frequency Coil Selection for MR Imaging of the Brain and Skull Base1
   by radiology.rsnajnls.org    
Searchterm 'Magnetic Resonance' was also found in the following services: 
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Radiology  (14) Open this link in a new windowUltrasound  (27) Open this link in a new window
Imaging Sequence
 
An imaging sequence is in magnetic resonance imaging a predefined set of radio frequency - and gradient pulses to excite the hydrogen nuclei of the object being imaged.
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• View the NEWS results for 'Imaging Sequence' (2).Open this link in a new window.
 
Further Reading:
  News & More:
New MR sequence helps radiologists more accurately evaluate abnormalities of the uterus and ovaries
Thursday, 23 April 2009   by www.eurekalert.org    
New MRI Technique Detects Genetic Condition That Attacks the Heart, Brain, Nerves
Wednesday, 2 October 2013   by www.sciencedaily.com    
MRI Resources 
Guidance - MRI Technician and Technologist Jobs - Contrast Enhanced MRI - Resources - Developers - Corporations
 
Intera 1.5TPanorama 0.2InfoSheet: - Devices -
Intro, 
Types of Magnets, 
Overview, 
etc.MRI Resource Directory:
 - Devices -
 
www.medical.philips.com/de/products/mri/products/ From Philips Medical Systems;
the Intera-family offers with this member a wide range of possibilities, efficiency and a ergonomic and intuitive serving-platform. Also available as Intera CV for cardiac and Intera I/T for interventional MR procedures.
The scanners are also equipped with SENSE technology, which is essential for high-quality contrast enhanced magnetic resonance angiography, interactive cardiac MR and diffusion tensor imaging (DTI) fiber tracking.
The increased accuracy and clarity of MR scans obtained with this technology allow for faster and more accurate diagnosis of potential problems like patient friendliness and expands the breadth of applications including cardiology, oncology and interventional MR.
Device Information and Specification
CLINICAL APPLICATION
Whole body
CONFIGURATION
Short bore compact
Standard: head, body, C1, C3; Optional: Small joint, flex-E, flex-R, endocavitary (L and S), dual TMJ, knee, neck, T/L spine, breast; Optional phased array: Spine, pediatric, 3rd party connector; Optional SENSE coils: Flex-S-M-L, flex body, flex cardiac
Optional
SYNCHRONIZATION
ECG/peripheral: Optional/yes, respiratory gating
PULSE SEQUENCES
SE, Modified-SE (TSE), IR (T1, T2, PD), STIR, FLAIR, SPIR, FFE, T1-FFE, T2-FFE, Balanced FFE, TFE, Balanced TFE, Dynamic, Keyhole, 3D, Multi Chunk 3D, Multi Stack 3D, K Space Shutter, MTC, TSE, Dual IR, DRIVE, EPI, Cine, 2DMSS, DAVE, Mixed Mode; Angiography: PCA, MCA, Inflow MRA, CE
IMAGING MODES
Single Slice 2D , Multi Single Slice 2D, Multi Slice 2D, 3D, Multi Chunk 3D, Multi Stack 3D
TR
2.9 (Omni), 1.6 (Power), 1.6 (Master/Expl) msec
TE
1.0 (Omni), 0.7 (Power), 0.5 (Master/Expl) msec
SINGLE/MULTI SLICE
RapidView Recon. greater than 500 @ 256 Matrix
FOV
Max. 53 cm
0.1 mm(Omni), 0.05 mm (Pwr/Mstr/Expl)
128 x 128, 256 x 256,512 x 512,1024 x 1024 (64 for BOLD img.)
MEASURING MATRIX
Variable in 1% increments
PIXEL INTENSITY
Lum.: 120 cd/m2; contrast: 150:1
Variable (op. param. depend.)
60 cm diameter (patient)
MAGNET WEIGHT
2900 kg
H*W*D
240 x 188 x 157 cm
POWER REQUIREMENTS
380/400 V
CRYOGEN USE
0.03 L/hr helium
STRENGTH
30 mT/m
5-GAUSS FRINGE FIELD
2.4 m / 3.8 m
Passive and dynamic
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Searchterm 'Magnetic Resonance' was also found in the following services: 
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News  (787)  Resources  (181)  Forum  (1)  
 
Intra Uterine PessarMRI Resource Directory:
 - Safety -
 
Most of the commonly used intrauterine contraceptive devices (IUD) do not move under the influence of the magnetic field, do not heat up during sequences usually applied for pelvic imaging, and do not produce major artifacts in vitro or in vivo.
mri safety guidance
MRI Safety Guidance
Thus, patients with either all plastic or copper IUDs can be safely imaged with magnetic resonance imaging (MRI) machines.
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Searchterm 'Magnetic Resonance' was also found in the following services: 
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Radiology  (14) Open this link in a new windowUltrasound  (27) Open this link in a new window
Knee MRI
 
Knee MRI, with its high soft tissue contrast is one of the main imaging tools to depict knee joint pathology. MRI allows accurate imaging of intra-articular structures such as ligaments, cartilage, menisci, bone marrow, synovium, and adjacent soft tissue.
Knee exams require a dedicated extremity coil, providing a homogenous imaging volume and high SNR to ensure best signal coverage. A complete knee MR examination includes for example sagittal and coronal T1 weighted, and proton density weighted pulse sequences +/- fat saturation, or STIR sequences. For high spatial resolution, maximal 4 mm thick slices with at least an in plane resolution of 0.75 mm and small gap are recommended. To depict the anterior cruciate ligament clearly, the sagittal plane has to be rotated 10 - 20° externally (parallel to the medial border of the femoral condyle). Retropatellar cartilage can bee seen for example in axial T2 weighted gradient echo sequences with Fatsat. However, the choice of the pulse sequences is depended of the diagnostic question, the used scanner, and preference of the operator.
Diagnostic quality in knee imaging is possible with field strengths ranging from 0.2 to 3T. With low field strengths more signal averages must be measured, resulting in increased scan times to provide equivalent quality as high field strengths.
More diagnostic information of meniscal tears and chondral defects can be obtained by direct magnetic resonance arthrography, which is done by introducing a dilute solution of gadolinium in saline (1:1000) into the joint capsule. The knee is then scanned in all three planes using T1W sequences with fat suppression. For indirect arthrography, the contrast is given i.v. and similar scans are started 20 min. after injection and exercise of the knee.
Frequent indications of MRI scans in musculoskeletal knee diseases are:
e.g., meniscal degeneration and tears, ligament injuries, osteochondral fractures, osteochondritis dissecans, avascular bone necrosis and rheumatoid arthritis.

See also Imaging of the Extremities and STIR.
 
Images, Movies, Sliders:
 Sagittal Knee MRI Images T1 Weighted  Open this link in a new window
      

 Anatomic MRI of the Knee 2  Open this link in a new window
    
SlidersSliders Overview

 Knee MRI Coronal Pd Spir 001  Open this link in a new window
 Sagittal Knee MRI Images STIR  Open this link in a new window
      

 Axial Knee MRI Images T2 Weighted  Open this link in a new window
 Anatomic MRI of the Knee 1  Open this link in a new window
    
SlidersSliders Overview

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


• View the NEWS results for 'Knee MRI' (4).Open this link in a new window.
 
Further Reading:
  Basics:
Musculoskeletal MRI at 3.0 T: Relaxation Times and Image Contrast
Sunday, 1 August 2004   by www.ajronline.org    
Knee, Anterior Cruciate Ligament Injuries (MRI)
Tuesday, 28 March 2006   by www.emedicine.com    
  News & More:
NSAIDs May Worsen Arthritis Inflammation
Monday, 21 November 2022   by www.itnonline.com    
A Knee MRI in Half the Time? It's Possible
Thursday, 8 April 2021   by www.diagnosticimaging.com    
Seniors, patients, astronauts will all benefit from new USask research on bone health
Saturday, 27 February 2021   by www.yorktonthisweek.com    
3D mapping algorithm reads knee MRIs for new arthritis treatments
Thursday, 11 June 2020   by www.healthimaging.com    
MRI T2 Mapping of the Knee Providing Synthetic Morphologic Images: Comparison to Conventional Turbo Spin-Echo MRI
Tuesday, 1 October 2019   by pubs.rsna.org    
Researcher uses MRI to measure joint's geometry and role in severe knee injury
Tuesday, 23 September 2014   by medicalxpress.com    
Abnormalities on MRI predict knee replacement
Monday, 9 March 2015   by medicalxpress.com    
MRI Resources 
Spectroscopy - DICOM - Fluorescence - Universities - MRA - Movies
 
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