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ECG Gating and Associated Artifacts 

ECG Gating and Associated Artifacts
ECG Gating and Associated Artifacts

Kiaran P. McGee

and Matthew W. Martinez

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date: 09 May 2021

In routine clinical cardiac magnetic resonance (MR) imaging, most morphologic and functional imaging involves the use of segmented data acquisition methods that are synchronized with the patient’s electrocardiographic (ECG) waveform. The process of synchronizing data acquisition with the ECG waveform of the patient is known as ECG gating. The purpose of this chapter is to provide an overview of the importance of ECG gating, describe the relationship between a normal ECG waveform and the appearance of the heart on MR imaging (MRI) throughout the cardiac cycle, and provide an overview of methods for ensuring robust ECG gating in the MR environment. Finally, different types of artifacts introduced into the ECG waveform by the MR environment and methods to reduce them will be discussed.

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