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Result : Searchterm 'Nuclear Magnetic Resonance Imaging' found in 1 term [] and 0 definition [], (+ 14 Boolean[] results
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Nuclear Magnetic Resonance ImagingMRI Resource Directory:
 - NMR -
 
Creation of images of objects such as the body by use of the nuclear magnetic resonance phenomenon. The immediate practical application involves imaging the distribution of hydrogen nuclei (protons) in the body. The image brightness in a given region depends on the spin density and the relaxation times, with their relative importance determined by the particular imaging technique employed. Image brightness is also affected by motion such as blood flow.

See also Zeugmatography and Magnetic Resonance Imaging MRI.
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Further Reading:
  News & More:
New quantum sensing technique allows high-resolution nuclear magnetic resonance spectroscopy
Wednesday, 17 June 2020   by phys.org    
MRI Resources 
Jobs pool - Cardiovascular Imaging - Stent - Most Wanted - Blood Flow Imaging - Service and Support
 
Amersham plcMRI Resource Directory:
 - Manufacturers -
 
www.amersham.com [This entry is marked for removal.]

GE Medical Systems and Amersham announced in April 2004 the completion of a share exchange acquisition of Amersham Health by GE. The result of this acquisition is the new GE Healthcare, based in the UK, totally owned by General Electric (GE).

Amersham plc, was a producer of contrast imaging agents used to enhance image quality in X-ray, magnetic resonance imaging, and ultrasound procedures. It was also a leading producer of radiopharmaceuticals used in nuclear medicine imaging. Amersham Health was the firm's imaging, diagnostics, and therapeutics segment. Amersham plc was involved in biotechnology research through its Amersham Biosciences unit, which made scanners, sequencers, microarrays, industrial separations, and other research supplies.
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Further Reading:
  News & More:
Recommended Share Exchange Acquisition by General Electric Company and GE Investments, Inc. of Amersham plc
Friday, 10 October 2003   by www.evaluatepharma.com    
MRI Resources 
Directories - Cochlear Implant - Developers - Shoulder MRI - Implant and Prosthesis pool - Safety Training
 
MRI History
 
Sir Joseph Larmor (1857-1942) developed the equation that the angular frequency of precession of the nuclear spins being proportional to the strength of the magnetic field. [Larmor relationship]
In the 1930's, Isidor Isaac Rabi (Columbia University) succeeded in detecting and measuring single states of rotation of atoms and molecules, and in determining the mechanical and magnetic moments of the nuclei.
Felix Bloch (Stanford University) and Edward Purcell (Harvard University) developed instruments, which could measure the magnetic resonance in bulk material such as liquids and solids. (Both honored with the Nobel Prize for Physics in 1952.) [The birth of the NMR spectroscopy]
In the early 70's, Raymond Damadian (State University of New York) demonstrated with his NMR device, that there are different T1 relaxation times between normal and abnormal tissues of the same type, as well as between different types of normal tissues.
In 1973, Paul Lauterbur (State University of New York) described a new imaging technique that he termed Zeugmatography. By utilizing gradients in the magnetic field, this technique was able to produce a two-dimensional image (back-projection). (Through analysis of the characteristics of the emitted radio waves, their origin could be determined.) Peter Mansfield further developed the utilization of gradients in the magnetic field and the mathematically analysis of these signals for a more useful imaging technique. (Paul C Lauterbur and Peter Mansfield were awarded with the 2003 Nobel Prize in Medicine.)
In 1975, Richard Ernst introduced 2D NMR using phase and frequency encoding, and the Fourier Transform. Instead of Paul Lauterbur's back-projection, he timely switched magnetic field gradients ('NMR Fourier Zeugmatography'). [This basic reconstruction method is the basis of current MRI techniques.]
1977/78: First images could be presented. A cross section through a finger by Peter Mansfield and Andrew A. Maudsley. Peter Mansfield also could present the first image through the abdomen.
In 1977, Raymond Damadian completed (after 7 years) the first MR scanner (Indomitable). In 1978, he founded the FONAR Corporation, which manufactured the first commercial MRI scanner in 1980. Fonar went public in 1981.
1981: Schering submitted a patent application for Gd-DTPA dimeglumine.
1982: The first 'magnetization-transfer' imaging by Robert N. Muller.
In 1983, Toshiba obtained approval from the Ministry of Health and Welfare in Japan for the first commercial MRI system.
In 1984, FONAR Corporation receives FDA approval for its first MRI scanner.
1986: Jürgen Hennig, A. Nauerth, and Hartmut Friedburg (University of Freiburg) introduced RARE (rapid acquisition with relaxation enhancement) imaging. Axel Haase, Jens Frahm, Dieter Matthaei, Wolfgang Haenicke, and Dietmar K. Merboldt (Max-Planck-Institute, Göttingen) developed the FLASH (fast low angle shot) sequence.
1988: Schering's MAGNEVIST gets its first approval by the FDA.
In 1991, fMRI was developed independently by the University of Minnesota's Center for Magnetic Resonance Research (CMRR) and Massachusetts General Hospital's (MGH) MR Center.
From 1992 to 1997 Fonar was paid for the infringement of it's patents from 'nearly every one of its competitors in the MRI industry including giant multi-nationals as Toshiba, Siemens, Shimadzu, Philips and GE'.
 
Images, Movies, Sliders:
 Cardiac Infarct Short Axis Cine Overview  Open this link in a new window
    

Courtesy of  Robert R. Edelman
 
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Further Reading:
  Basics:
Magnetic Resonance Imaging, History & Introduction
2000   by www.cis.rit.edu    
A Short History of the Magnetic Resonance Imaging (MRI)
   by www.teslasociety.com    
Fonar Our History
   by www.fonar.com    
  News & More:
Scientists win Nobels for work on MRI
Tuesday, 10 June 2003   by usatoday30.usatoday.com    
2001 Lemelson-MIT Lifetime Achievement Award Winner
   by web.mit.edu    
MRI's inside story
Thursday, 4 December 2003   by www.economist.com    
Searchterm 'Nuclear Magnetic Resonance Imaging' was also found in the following services: 
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Mallinckrodt, Inc.MRI Resource Directory:
 - Manufacturers -
 
www.mallinckrodt.com Mallinckrodt, a Tyco Healthcare company makes and distributes products for respiratory care; bulk and dosage pharmaceuticals, primarily for pain relief and addiction therapy; and imaging agents for magnetic resonance, ultrasound, X-ray, and nuclear medicine applications. With worldwide manufacturing and distribution facilities, as well as worldwide sales offices, Mallinckrodt sells its products worldwide.
GastroMARK® is marketed in the United States by Mallinckrodt, Inc.

In June 2007 Tyco International Ltd. completed the separation of its healthcare business, which is named Covidien. Mallinckrodt, Inc. is now part of Covidien Ltd.

MRI Contrast Agents:
Contact Information
MAIL
Mallinckrodt, Inc.
675 McDonnell Blvd.
Hazelwood, MO 63042
USA
PHONE
US: (888)744-1414
International: +1-314-654-3177
FAX
+1-314-654-5380
E-MAIL
Imaging Products Customer Service:
US: Imaging Customer Service
International: icsstl@mkg.com
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Further Reading:
  Basics:
Guerbet Completes Acquisition of Mallinckrodt’s Contrast Media and Delivery Systems Business
Sunday, 29 November 2015   by www.itnonline.com    
  News & More:
Covidien Completes Spin Off, Mallinckrodt Starts Trading On NYSE
Monday, 1 July 2013   by www.rttnews.com    
MRI Resources 
Directories - Shoulder MRI - Shielding - Cardiovascular Imaging - Calculation - Jobs
 
Siemens Medical Systems
 
www.siemensmedical.com The range of diagnostics and imaging systems of Siemens Medical Systems covers ultrasound, nuclear medicine, angiography, magnetic resonance, computer tomography and patient monitoring. Siemens is one of the three leading MRI manufacturers, which together account for approximately 80 percent of the MRI machines installed worldwide. Siemens currently offers the Allegra 3T MRI, which is for head scanning only, but the company will also be launching the Trio MRI, a 3T whole body scanner.
Siemens has formed partnerships with more than ten research institutions and private practitioners to define a comprehensive MRI examination and compare MR to currently established cardiovascular modalities, thereby defining optimal diagnosis and treatment.

MRI Scanners:

0.2T to 1.0T:
1.5T:
3.0T to 7.0T:
Hybrid Scanners:
Mobile Solutions:
MAGNETOM Espree 1.5T, MAGNETOM Avanto 1.5T and MAGNETOM ESSENZA 1.5T are also offered by Siemens on certified trailers.
Contact Information
MAIL
Siemens Medical Solutions Health Services Corporation
51 Valley Stream Parkway
Malvern, PA 19355
USA
PHONE
+1 610 219 6300
FAX
+1 610 219 8266
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Further Reading:
  Basics:
Siemens Announces FDA Clearance of Magnetom Amira MRI Scanner
Thursday, 21 January 2016   by www.itnonline.com    
  News & More:
siemens-healthineers-and-ucsf-research-partnership-proves-significant-energy-cost
Thursday, 27 April 2023   by www.itnonline.com    
KinetiCor Wins FDA 510(k) Clearance for Motion Correction System for Siemens MAGNETOM Skyra 3T Scanner
Wednesday, 19 February 2020   by finance.yahoo.com    
Ultra-Fast MRI Is Effective in Acute Neurological Emergency Diagnoses
Wednesday, 15 January 2020   by www.diagnosticimaging.com    
Siemens Working on Automated Planning of Cardiac MRI Views
Friday, 8 March 2013   by www.medgadget.com    
The Most Exciting Equation in MRI Siemens MAGNETOM Verio Combines High-Field Imaging and a 70-cm Open-Bore Design
Wednesday, 31 October 2007   by www.biospace.com    
MRI Resources 
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