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MRI Eddy Current Gradient Coil ü Gradient Current ޽ ޽ 𼭸 ܿ Ǵ μ ʴ Gradient Filed Ͽ ְ ʷѴ. ̷ ְ ٶ ʱ Gradient Field ʿ䰡 ִ.

ذϱ ECC(Eddy Current Compensation) ̴. ECC Algorithm ׸ .

 

 

1). ECC Pulse sequence

-          Gradient Pulse ۿ Ÿ Eddy Current Field ϱ ޽ 迭̴. RF pulse ۿ Ÿ MRI ȣκ Eddy Current Field Ѵ.

-          پ t Eddy Current Field ׷ ´.

 

2). Eddy Current Parameters

-          Eddy Current Field ׷ Ư Լ FittingϿ Field Ư Ѵ. Eddy Current ߻ Ŀ ȴ.

-          Ѱ ǿ մؾ Ѵ.

3). Gradient Current Waveform

-          ̿Ͽ Ȯ Pre-emphasized data ´.

-          data ռϿ ϴ Gradient Waveform ´.

 

̷ Algorithm ̿ϸ, ª ð Eddy Current Ͽ ְ ùٸ ȹ ־ ȭ pulse sequence ߿ ū ȴ.

 

   
 
 
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