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Amplifier
 
Hardware components from MRI systems. The radio frequency (RF) amplifier increases the power (measured in Watt) of the pulses from mW to kW and the gradient amplifier increases the power of the gradient pulses for the gradient coils.
See also Hardware.
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Further Reading:
  Basics:
Tech Spotlight: How to calibrate an MRI RF amplifier
Saturday, 1 December 2012   by medicaldesign.com    
AmplitudeForum -
there are related threads
 
The signal height. The greater the amplitude of the signal, the larger the number of protons in the image and the brighter the signal will appear.
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Further Reading:
  Basics:
Contrast mechanisms in magnetic resonance imaging
2004   by www.iop.org    
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Analog
 
Being continuous, or having a continuous range of values.
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Analog to Digital Converter
 
(ADC) A system that receives analog input data and produces digital values at its output. Used by the MRI scanner to convert the received signal into a format more compatible with the computer systems.
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AngiographyForum -
there are related threads
 
Angiography means the imaging of veins and arteries. Magnetic resonance angiography (MRA) has a lower invasion than conventional angiography with catheter and X-ray contrast agent. Time of flight angiography (inflow) and phase contrast angiography works without contrast agents. Only in contrast enhanced magnetic resonance angiography is the use of contrast agents necessary, but the lack of side effects is an advantage of MRI contrast agents, just as the smaller dosage as used in X-ray angiography techniques.

See also the related poll result: 'MRI will have replaced 50% of x-ray exams by'
 
Images, Movies, Sliders:
 CE-MRA of the Carotid Arteries Colored MIP  Open this link in a new window
    
SlidersSliders Overview

 CE MRA of the Aorta  Open this link in a new window
    
SlidersSliders Overview

 TOF-MRA Circle of Willis Inverted MIP  Open this link in a new window
    

 
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Further Reading:
  News & More:
Treadmill, cardiac MRI, then angiography most cost effective
Wednesday, 17 April 2013   by heartzine.com    
First IMRIS intraoperative suite in Canada featuring flexibility of MRI and angiography opens at Health Sciences Centre Winnipeg
Tuesday, 17 September 2013   by online.wsj.com    
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In 2020 your scanner will probably work with a field strength of :
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