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Imaging of the ExtremitiesMRI Resource Directory:
 - Musculoskeletal and Joint MRI -
 
Knee and shoulder MRI exams are the most commonly requested musculoskeletal MRI scans. Other MR imaging of the extremities includes hips, ankles, elbows, and wrists. Orthopedic imaging requires very high spatial resolution for reliable small structure definition and therefore places extremely high demands on SNR.
Exact presentation of joint pathology expects robust and reliable fat suppression, often under difficult conditions like off-center FOV, imaging at the edge of the field homogeneity or in regions with complex magnetic susceptibility.
MR examinations can evaluate meniscal dislocations, muscle fiber tears, tendon disruptions, tendinitis, and diagnose bone tumors and soft tissue masses. MR can also demonstrate acute fractures that are radiographically impossible to see. Evaluation of articular cartilage for traumatic injury or assessment of degenerative disease represents an imaging challenge, which can be overcome by high field MRI applications. Currently, fat-suppressed 3D spoiled gradient echo sequences and density weighted fast spin echo sequences are the gold-standard techniques used to assess articular cartilage.
Open MRI procedures allow the kinematic imaging of joints, which provides added value to any musculoskeletal MRI practice. This technique demonstrates the actual functional impingements or positional subluxations of joints. In knee MRI examinations, the kinematical patellar study can show patellofemoral joint abnormalities.

See also Open MRI, Knee MRI, Low Field MRI.
 
Images, Movies, Sliders:
 MRI - Anatomic Imaging of the Foot  Open this link in a new window
    
SlidersSliders Overview

 Anatomic Imaging of the Shoulder  Open this link in a new window
      

Courtesy of  Robert R. Edelman

 MRI - Anatomic Imaging of the Ankle 2  Open this link in a new window
    
SlidersSliders Overview

 Anatomic MRI of the Knee 1  Open this link in a new window
    
SlidersSliders Overview

 
Radiology-tip.comradJoint Scintigraphy,  Arthrography
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Medical-Ultrasound-Imaging.comSonography,  Musculoskeletal and Joint Ultrasound
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• Related Searches:
    • High Field MRI
    • Shoulder MRI
    • Proton Density
    • Open MRI
    • Short T1 Inversion Recovery
 
Further Reading:
  Basics:
Musculoskeletal MRI at 3.0 T: Relaxation Times and Image Contrast
Sunday, 1 August 2004   by www.ajronline.org    
Optimizing Musculoskeletal MR
   by rad.usuhs.mil    
VALUE OF 3D T1W & STIR MRI SEQUENCES IN DIAGNOSING EROSIONS IN RHEUMATOID ARTHRITIS
   by www.bocaradiology.com    
Comparison of New Methods for Magnetic Resonance Imaging of Articular Cartilage(.pdf)
2002
  News & More:
MRI of Hand, Foot May Predict RA in Undifferentiated Arthritis
Monday, 24 January 2022   by consumer.healthday.com    
MRI-Detected Erosions of the Small Joints Not Predictive of Later Rheumatoid Arthritis
Tuesday, 7 July 2020   by www.rheumatologyadvisor.com    
MRI Superior to Radiography in Capturing Joint Changes That Signal Future Bleeds, Study Says
Friday, 7 February 2020   by hemophilianewstoday.com    
3D 'bone maps' could spot early signs of osteoporosis
Monday, 27 February 2017   by www.gmanetwork.com    
Is magnetic resonance imaging necessary in isolated greater trochanter fracture? A systemic review and pooled analysis
Thursday, 24 December 2015   by www.ncbi.nlm.nih.gov    
Researcher uses MRI to measure joint's geometry and role in severe knee injury
Tuesday, 23 September 2014   by medicalxpress.com    
MRI technique allows study of wrist in motion
Monday, 6 January 2014   by www.healthimaging.com    
MRI Resources 
Absorption and Emission - Homepages - Libraries - Liver Imaging - Universities - Case Studies
 
ARTOSCAN™ - MInfoSheet: - Devices -
Intro, 
Types of Magnets, 
Overview, 
etc.MRI Resource Directory:
 - Devices -
 
www.gemedicalsystems.com/rad/mri/products/artoscan/specs.html Developed by GE Lunar; the ARTOSCAN™-M is designed specifically for in-office musculoskeletal imaging. ARTOSCAN-M's compact, modular design allows placing within a clinical environment, bringing MRI to the patient. Patients remain outside the magnet at all times during the examinations, enabling constant patient-technologist contact. ARTOSCAN-M requires no special RF room, magnetic shielding, special power supply or air conditioning.
The C-SCAN™ (also known as Artoscan C) is developed from the ARTOSCAN™ - M, with a new computer platform.
Device Information and Specification
CLINICAL APPLICATION
Dedicated extremity
CONFIGURATION
Closed
Linear and dual phased array coil, knee, ankle, wrist coils
PULSE SEQUENCES
SE, GE, IR, STIR, FSE, 3D CE, GE-STIR, 3D GE, ME, TME, HSE
IMAGING MODES
Single, multislice, volume study, fast scan, multi slab, cine
TR
12 - 5,000 msec
TE
5 - 220 msec
SINGLE SLICE
0.8 sec/image
MULTISLICE
0.8 sec/image
FOV
10 - 20 cm
SLICE THICKNESS
2D: 2 mm - 10 mm;
3D: 0.6 mm - 10 mm
512 x 512
MEASURING MATRIX
256 x 256 maximum
PIXEL INTENSITY
4,096 gray lvls, 256 lvls in 3D
MAGNET TYPE
Ferrite Permanent
MAGNET WEIGHT
965 kg
POWER REQUIREMENTS
100/110/200/220/230/240V
STRENGTH
10 mT/m
5 GAUSS FRINGE FIELD, radial/axial
28 cm/60 cm
Passive
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• View the DATABASE results for 'ARTOSCAN™ - M' (3).Open this link in a new window

MRI Resources 
Shoulder MRI - Colonography - IR - Nerve Stimulator - Mass Spectrometry - RIS
 
S-SCANInfoSheet: - Devices -
Intro, 
Types of Magnets, 
Overview, 
etc.
 
www.esaote.com/products/MRI/sScan/products1.htm From Esaote S.p.A.; Esaote introduced the S-SCAN at RSNA in November 2007. The S-SCAN is a dedicated joint and spine MR scanner derived from the company's earlier G-SCAN system. Unlike the G-SCAN, neither the patient table nor the magnet can rotate from horizontal to vertical position. The patient table can only moved manually. Improved electronics, new coils for lumbar and cervical spine, new pulse sequences, a modified version of the magnet poles and gradient coils are used with a new software release in the S-SCAN.
Esaote North America is the exclusive U.S. distributor of this MRI device.
Device Information and Specification
CLINICAL APPLICATION
CONFIGURATION
4-channel phased array spine coil, extremity, shoulder, flex coil, knee dual phased array, ankle//foot dual phased array, hand//wrist dual phased array
PULSE SEQUENCES
SE, GE, IR, STIR, TSE, 3D CE, GE-STIR, 3D GE, ME, TME, HSE
IMAGING MODES
Single, multislice, volume study, fast scan, multi slab, cine
25 cm
MEASURING MATRIX
256 x 256 maximum
MAGNET TYPE
Permanent
33 cm H, open
POWER REQUIREMENTS
3 kW; 110/220 V single phase
STRENGTH
25 mT/m
5-GAUSS FRINGE FIELD, radial/axial
180 cm
Passive
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• View the DATABASE results for 'S-SCAN' (3).Open this link in a new window


• View the NEWS results for 'S-SCAN' (1).Open this link in a new window.
 
Further Reading:
  News & More:
Wichita medical facility gets first Hologic S-scan MRI in the United States
Friday, 19 October 2007   by wichita.bizjournals.com    
Searchterm 'Musculoskeletal MRI' was also found in the following services: 
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News  (4)  Resources  (7)  
 
G-SCANInfoSheet: - Devices -
Intro, 
Types of Magnets, 
Overview, 
etc.MRI Resource Directory:
 - Devices -
 
www.esaote.de/04_kernspin/gscan/gscan.htm From Esaote S.p.A.; Esaote introduced the new G-SCAN at the RSNA in Dec. 2004. The G-SCAN covers almost all musculoskeletal applications including the spine. The tilting gantry is designed for scanning in weight-bearing positions. This unique MRI scanner is developed in line with the Esaote philosophy of creating high quality MRI systems that are easy to install and that have a low breakeven point.
Device Information and Specification
CLINICAL APPLICATION
CONFIGURATION
Spine, extremity, shoulder, flex coil, knee dual phased array, ankle//foot dual phased array, hand//wrist dual phased array
PULSE SEQUENCES
SE, GE, IR, STIR, TSE, 3D CE, GE-STIR, 3D GE, ME, TME, HSE
IMAGING MODES
Single, multislice, volume study, fast scan, multi slab, cine
FOV
100 up to 350 mm, 25 mm displayed
512 x 512
MEASURING MATRIX
256 x 256 maximum
MAGNET TYPE
Permanent
BORE DIAMETER
or W x H
33 cm H, open
POWER REQUIREMENTS
100/110/200/220/230/240 V
STRENGTH
25 mT/m
5-GAUSS FRINGE FIELD
180 cm
Passive
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• View the DATABASE results for 'G-SCAN' (3).Open this link in a new window

MRI Resources 
Collections - Most Wanted - NMR - Jobs - MRI Technician and Technologist Jobs - Bioinformatics
 
Esaote S.p.A.MRI Resource Directory:
 - Manufacturers -
 
www.esaote.com The Esaote Group, founded in the 1980's, is a global leader in research, production, and marketing of medical diagnostic equipment and related services. Esaote offers integrated diagnostic solutions for ultrasound electromedical diagnostic systems, and MRI. The Esaote MR equipment is dedicated for specific clinical applications, as distinguished from conventional whole body MRI systems. This MRI product family is based on a unique, proprietary technology developed specifically for musculoskeletal imaging.
The Italian based company is a member of the Bracco Group.
Esaote North America is the exclusive U.S. distributor of MRI devices manufactured by Esaote.

MRI Scanners:

0.2T to 0.31T:
Vet-MR (Based on the E Scan XQ, dedicated to the veterinarian practice.)
Contact Information
MAIL
ESAOTE S.p.A. MRI DIvision
Via Siffredi, 58
16153 Genova
Italy
PHONE
+39-010-6547.380
FAX
+39-010-6547.241
CONTACT INFO PAGE
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• View the DATABASE results for 'Esaote S.p.A.' (5).Open this link in a new window


• View the NEWS results for 'Esaote S.p.A.' (1).Open this link in a new window.
 
Further Reading:
  Basics:
E-Scan, 510(k) Summary(.pdf)
Saturday, 15 May 2004   by www.accessdata.fda.gov    
  News & More:
Esaote Obtains EC MDR Certification for the New Magnifico Open Total-body Magnetic Resonance System
Sunday, 5 December 2021   by www.itnonline.com    
Global Magnetic Resonance Imaging Systems Market Data Analysis 2019-2025 Aurora Imaging Technology, Esaote, Fonar Corporation
Wednesday, 8 January 2020   by citiblognews.com    
MRI Resources 
Image Quality - Chemistry - DICOM - Jobs - Stent - MRI Physics
 
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