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Synchronized cardiac and respiratory sparsity for rapid free-breathing cardiac cine MRI

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For patients with impaired breath-hold capacity or arrhythmias, free breathing real-time cine MRI is preferred at the expense of compromised spatiotemporal resolution... Compressed sensing (CS) has been used to achieve higher spatiotemporal resolutions in real-time cine MRI, but the superposition of respiratory and cardiac motion limits temporal sparsity... CS reconstruction was performed with two total variation constraints along cardiac and respiratory dimensions... The results were also compared to Cartesian breath-hold approach using retrospective ECG-gating... Figure 2a shows the different cardiac phases and respiratory states on the volunteer... Figure 2b compares the clinical breath-hold approach with the proposed method on the patient... Superior image quality is achieved even in the presence of arrhythmia... Separating cardiac and respiratory motion improved the sparsity of representation and thus the acceleration capability for CS... Additional functional information can be obtained by evaluating the movement of myocardial wall along the respiratory motion in a given cardiac phase.

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(a) Cardiac cine imaging with cardio-respiratory synchronization in the volunteer. Additional functional information can be obtained by evaluating the movement of myocardial wall along the respiratory motion in a given cardiac phase. (b) Clinical breath-held cardiac cine imaging using a Cartesian trajectory and retrospective ECG-gating in a patient with arrhythmia and corresponding free-breathing cardiac cine imaging with cardio-respiratory synchronization.
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Figure 2: (a) Cardiac cine imaging with cardio-respiratory synchronization in the volunteer. Additional functional information can be obtained by evaluating the movement of myocardial wall along the respiratory motion in a given cardiac phase. (b) Clinical breath-held cardiac cine imaging using a Cartesian trajectory and retrospective ECG-gating in a patient with arrhythmia and corresponding free-breathing cardiac cine imaging with cardio-respiratory synchronization.

Mentions: Figure 2a shows the different cardiac phases and respiratory states on the volunteer. Figure 2b compares the clinical breath-hold approach with the proposed method on the patient. Superior image quality is achieved even in the presence of arrhythmia.


Synchronized cardiac and respiratory sparsity for rapid free-breathing cardiac cine MRI
(a) Cardiac cine imaging with cardio-respiratory synchronization in the volunteer. Additional functional information can be obtained by evaluating the movement of myocardial wall along the respiratory motion in a given cardiac phase. (b) Clinical breath-held cardiac cine imaging using a Cartesian trajectory and retrospective ECG-gating in a patient with arrhythmia and corresponding free-breathing cardiac cine imaging with cardio-respiratory synchronization.
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4044195&req=5

Figure 2: (a) Cardiac cine imaging with cardio-respiratory synchronization in the volunteer. Additional functional information can be obtained by evaluating the movement of myocardial wall along the respiratory motion in a given cardiac phase. (b) Clinical breath-held cardiac cine imaging using a Cartesian trajectory and retrospective ECG-gating in a patient with arrhythmia and corresponding free-breathing cardiac cine imaging with cardio-respiratory synchronization.
Mentions: Figure 2a shows the different cardiac phases and respiratory states on the volunteer. Figure 2b compares the clinical breath-hold approach with the proposed method on the patient. Superior image quality is achieved even in the presence of arrhythmia.

View Article: PubMed Central - HTML

AUTOMATICALLY GENERATED EXCERPT
Please rate it.

For patients with impaired breath-hold capacity or arrhythmias, free breathing real-time cine MRI is preferred at the expense of compromised spatiotemporal resolution... Compressed sensing (CS) has been used to achieve higher spatiotemporal resolutions in real-time cine MRI, but the superposition of respiratory and cardiac motion limits temporal sparsity... CS reconstruction was performed with two total variation constraints along cardiac and respiratory dimensions... The results were also compared to Cartesian breath-hold approach using retrospective ECG-gating... Figure 2a shows the different cardiac phases and respiratory states on the volunteer... Figure 2b compares the clinical breath-hold approach with the proposed method on the patient... Superior image quality is achieved even in the presence of arrhythmia... Separating cardiac and respiratory motion improved the sparsity of representation and thus the acceleration capability for CS... Additional functional information can be obtained by evaluating the movement of myocardial wall along the respiratory motion in a given cardiac phase.

No MeSH data available.


Related in: MedlinePlus