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Result : Searchterm 'Tesla' found in 3 terms [] and 40 definitions []
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TeslaForum -
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(T) The SI unit of magnetic flux density.
Definition: 1 T is the field intensity generating 1 newton of force per ampere of current per meter of conductor. The tesla unit value is defined as a field strength of 1 weber per square meter of area, where 1 weber represents 1 x 108 (100 000 000) flux lines.
One T is equal to 10 000 gauss, the older (CGS) unit. A field of 1 tesla is quite strong, the Earth's magnetic flux density, at its surface, is about 50 microteslas (µT). The slew rate of MRI devices is measured in mT/m/msec or T/m/sec.
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    • 5 Gauss Limit
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Further Reading:
  Basics:
How strong are magnets?
   by my.execpc.com    
Dealing with Increased MRI Field Strength
Tuesday, 1 October 2013   by www.evaluationengineering.com    
  News & More:
First European fully superconductive coil reaching a magnetic field of 25 Tesla produced
Wednesday, 8 June 2016   by www.news-medical.net    
Siemens Healthcare to introduce new 7 Tesla MRI research system
Tuesday, 2 June 2015   by www.pharmabiz.com    
7-Tesla MRI scanner allows even more accurate diagnosis of breast cancer
Thursday, 6 March 2014   by www.healthcanal.com    
Susceptibility-weighted cardiovascular magnetic resonance in comparison to T2 and T2 star imaging for detection of intramyocardial hemorrhage following acute myocardial infarction at 3 Tesla
Tuesday, 28 October 2014   by 7thspace.com    
Controversy about This Year's Nobel Prize in Medicine
2003   by www.teslasociety.com    
Searchterm 'Tesla' was also found in the following services: 
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Radiology  (4) Open this link in a new windowUltrasound  (1) Open this link in a new window
Teslascan®InfoSheet: - Contrast Agents - 
Intro, Overview, 
Characteristics, 
Types of, 
etc.MRI Resource Directory:
 - Contrast Agents -
 
(Mn-DPDP) This agent, mangafodipir trisodium, is a hepatocyte specific MRI contrast agent. Manganese is very toxic, so it has to be chelated and put in the form of a vitamin B6 analog, which is taken up by normal hepatocytes to some extent.
Teslascan® was developed in the early 1980's, went through clinical trials in the early 1990's, and was approved in 1997. One problem with assessing the efficacy of this agent is the fact that the phase III trials finished in the early 1990's, and the techniques used for MR today are very different from the techniques used almost a decade ago.
This contrast agent shortens the T1 relaxation time. On T1 weighted pictures it makes a normal liver look brighter. Since metastases, for example, do not generally take up this agent, the contrast between the enhancing liver and the non-enhancing lesions will increase on T1 weighted pictures. It does not have much effect on T2 weighted images.

Drug Information and Specification
NAME OF COMPOUND Mangafodipir trisodium, Manganese dipyroxyl diphosphate, MN-DPDP
DEVELOPER Amersham plc
CENTRAL MOIETY Mn2+
CONTRAST EFFECT T1, Predominantly positive enhancement
RELAXIVITY r1=2.3, r2=4.0, B0=1.0 T
PHARMACOKINETIC Hepatobiliary, pancreatic, adrenal
OSMOLALITY 290 mosm/kgH2O
CONCENTRATION 0.01 mmol/L
DOSAGE 5 µmol/kg, 0.5 ml/kg
PREPARATION Finished product
INDICATION Liver lesions
DEVELOPMENT STAGE Approved
DISTRIBUTOR See below
PRESENTATION Vials of 100 ml
DO NOT RELY ON THE INFORMATION PROVIDED HERE, THEY ARE NOT A SUBSTITUTE FOR THE ACCOMPANYING PACKAGE INSERT

Distribution Information
TERRITORY TRADE NAME DEVELOPMENT
STAGE
DISTRIBUTOR
USA Teslascan® for sale GE Healthcare
EU Teslascan® for sale GE Healthcare

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

 
Further Reading:
  Basics:
EMEA - Teslascan - SCIENTIFIC DISCUSSION(.pdf)
   by www.emea.europa.eu    
  News & More:
Diagnosis and staging of pancreatic cancer: comparison of mangafodipir trisodium-enhanced MR imaging and contrast-enhanced helical hydro-CT.
2002
MAGNETIC RESONANCE IMAGING OF FOCAL LIVER LESIONS(.pdf)
2002
MRI Resources 
Education pool - Mass Spectrometry - MR Guided Interventions - Fluorescence - Safety Products - Contrast Agents
 
iMotion™ 1.5 Tesla MagnetInfoSheet: - Devices -
Intro, 
Types of Magnets, 
Overview, 
etc.MRI Resource Directory:
 - Devices -
 
www.imris.com/ The mobile intraoperative iMotion system produces real-time images used for MR guided surgery and offers functional magnetic resonance imaging, MR spectroscopy, perfusion imaging, and diffusion weighted imaging capabilities.
The iMotion 1.5 T magnet moves to the patient, gliding in and out of place as needed, without affecting surgical, anesthetic, and nursing management.
See also Intraoperative Magnetic Resonance Imaging, MR Guided Interventions.
Device Information and Specification
CLINICAL APPLICATION Whole body
CONFIGURATION Mobile compact
SURFACE COILS Whole body, intra-operative head, neck volume, atlas head//neck vascular quadrature phased array, spine quadrature, C/T/L spine phased array, small joint, large joint, TMJ bilateral, shoulder phased array, extremity quadrature volume, wrist, hand quadrature, general purpose flexible, pelvis/abdomen phased array, body quadrature, phased array flexible, breast bilateral
SPECTROSCOPY SVS, CSI
SYNCHRONIZATION Standard cardiac gating, ECG/peripheral, respiratory gating
PULSE SEQUENCES SE, IR, TSE, EPI, Diffusion, Perfusion, Angiography
IMAGING MODES Localizer, single slice, multislice, volume
MAGNET TYPE Superconducting
FIELD STRENGTH 1.5 T
SHIMMING Active
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• View the DATABASE results for 'iMotion™ 1.5 Tesla Magnet' (2).Open this link in a new window

 
Further Reading:
  News & More:
Siemens and IMRIS Partner to Offer Ceiling-Mounted MRI; Movable iMotion System Serves Both Operating Rooms and Diagnostic Imaging Departments, Enables Significantly Improved Return on Investment.
Tuesday, 4 April 2006   by www.thefreelibrary.com    
IMRIS receives FDA clearance for next generation VISIUS Surgical Theatre
Thursday, 13 February 2014   by www.imris.com    
Searchterm 'Tesla' was also found in the following services: 
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News  (56)  Resources  (12)  Forum  (14)  
 
MRI RisksMRI Resource Directory:
 - Safety -
 
The subacute risks and side effects of magnetic and RF fields (for patients and staff) have been intensively examined for a long time, but there have been no long-term studies following persons who have been exposed to the static magnetic fields used in MRI. However, no permanent hazardous effects of a static magnetic field exposure upon human beings have yet been demonstrated.
Temporary possible side effects of high magnetic and RF fields:
Varying magnetic fields can induce so-called magnetic phosphenes that occur when an individual is subject to rapid changes of 2-5 T/s, which can produce a flashing sensation in the eyes. This temporary side effect does not seem to damage the eyes. Static field strengths used for clinical MRI examinations vary between 0.2 and 3.0 tesla;; field changes during the MRI scan vary in the dimension of mT/s. Experimental imaging units can use higher field strengths of up to 14.0 T, which are not approved for human use.
The Radio frequency pulses mainly produce heat, which is absorbed by the body tissue. If the power of the RF radiation is very high, the patient may be heated too much. To avoid this heating, the limit of RF exposure in MRI is up to the maximum specific absorption rate (SAR) of 4 W/kg whole body weight (can be different from country to country). For MRI safety reasons, the MRI machine starts no sequence, if the SAR limit is exceeded.
Very high static magnetic fields are needed to reduce the conductivity of nerves perceptibly. Augmentation of T waves is observed at fields used in standard imaging but this side effect in MRI is completely reversible upon removal from the magnet. Cardiac arrhythmia threshold is typically set to 7-10 tesla. The magnetohydrodynamic effect, which results from a voltage occurring across a vessel in a magnetic field and percolated by a saline solution such as blood, is irrelevant at the field strengths used.
The results of some animal and cellular studies suggest the possibility that electromagnetic fields may act as co-carcinogens or tumor promoters, but the data are inconclusive. Up to 45 tesla, no important effects on enzyme systems have been observed. Neither changes in enzyme kinetics, nor orientation changes in macromolecules have been conclusively demonstrated.
There are some publications associating an increase in the incidence of leukemia with the location of buildings close to high-current power lines with extremely low-frequency (ELF) electromagnetic radiation of 50-60 Hz, and industrial exposure to electric and magnetic fields but a transposition of such effects to MRI or MRS seems unlikely.
Under consideration of the MRI safety guidelines, real dangers or risks of an exposure with common MRI field strengths up to 3 tesla as well as the RF exposure during the MRI scan, are not to be expected.
For more MRI safety information see also Nerve Conductivity, Contraindications, Pregnancy and Specific Absorption Rate.

See also the related poll result: 'In 2010 your scanner will probably work with a field strength of'
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• View the NEWS results for 'MRI Risks' (3).Open this link in a new window.
 
Further Reading:
  Basics:
MRI in Patients with Implanted Devices: Current Controversies
Monday, 1 August 2016   by www.acc.org    
Working with MRI machines may cause vertigo: Study
Wednesday, 25 June 2014   by www.cos-mag.com    
Physics of MRI Safety
   by www.aapm.org    
  News & More:
Noise from Magnetic Resonance Imaging Can Have Short-Term Impact on Hearing
Thursday, 22 February 2018   by www.diagnosticimaging.com    
Making Pacemakers and ICDs MRI-Safe
Wednesday, 8 March 2017   by www.mddionline.com    
Implantable Infusion Pumps in the Magnetic Resonance (MR) Environment: FDA Safety Communication - Important Safety Precautions
Wednesday, 11 January 2017   by www.fda.gov    
Commission delays electromagnetic fields legislation
Monday, 29 October 2007   by cordis.europa.eu:80    
FDA Dials in on MRI Safety of Passive Implantable Medical Devices
Wednesday, 24 June 2015   by www.raps.org    
When Your Kid Needs an MRI: Optimizing the Experience
Tuesday, 29 March 2016   by health.usnews.com    
Women with permanent make-up tattoos suffer horrific facial burns after going in for MRI scans - which create an electric current in the ink
Monday, 4 July 2016   by www.dailymail.co.uk    
Searchterm 'Tesla' was also found in the following services: 
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Radiology  (4) Open this link in a new windowUltrasound  (1) Open this link in a new window
Mangafodipir TrisodiumInfoSheet: - Contrast Agents - 
Intro, Overview, 
Characteristics, 
Types of, 
etc.MRI Resource Directory:
 - Contrast Agents -
 
Short name: Mn-DPDP
This MRI contrast agent is a chelate complex of the paramagnetic metal ion manganese (Mn) and fodipir. Mn-DPDP (Teslascan) shortens the longitudinal relaxation time and is used for the T1 weighted enhancement of MR images. Mangafodipir trisodium accumulates after intravenous injection in the healthy tissue of the liver and improves the detection, localization, characterization, and evaluation of lesions of the liver, pancreas, but can also be used in cardiac MRI.
See also Hepatobiliary Chelates and Teslascan®.
The United States Food and Drug Administration (FDA) has granted marketing clearance 1997, to Nycomed Amersham's MRI contrast medium. Nycomed/Amersham, now GE Healthcare markets the product under the trade name Teslascan®.

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• View the DATABASE results for 'Mangafodipir Trisodium' (6).Open this link in a new window


• View the NEWS results for 'Mangafodipir Trisodium' (1).Open this link in a new window.
 
Further Reading:
  Basics:
Teslascan Pharmacology, Pharmacokinetics, Studies, Metabolism - Mangafodipir - RxList Monograph
   by www.rxlist.com    
Mangafodipir (Systemic)
2003   by www.drugs.com    
  News & More:
Diagnosis and staging of pancreatic cancer: comparison of mangafodipir trisodium-enhanced MR imaging and contrast-enhanced helical hydro-CT.
2002
MRI Resources 
Jobs pool - Spine MRI - Stimulator pool - Liver Imaging - Examinations - Movies
 
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