Three-dimensional Magnetic Resonance Imaging Using Single Breath-hold k-t BLAST for Assessment of Global Left Ventricular Functional Parameters

Jaroni, Jennifer; Meier, Reinhard; Beer, Ambros J.; Herrmann, Ken; Settles, Marcus; Rummeny, Ernst J.; Huber, Armin

doi:10.1016/j.acra.2013.03.012

Cited by 11 publications

(5 citation statements)

References 25 publications

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“…Likewise, a relevant agreement between the techniques was achieved for LV volumes and mass. Accelerated k-t SENSE promoted a small myocardial mass overestimation and LVEDVI underestimation in a similar fashion of what was found when studying agreement of a 3D k-t BLAST technique with 2D-SSFP cines (despite differences between BLAST and SENSE based sequences) [8]. Other studies regarding spatiotemporal acceleration techniques found similar results, either with compressed sensing or SENSE [19, 20].…”

Section: Discussionsupporting

confidence: 66%

“…Accelerated CMR sequences, such as k-t BLAST (broad-use linear acquisition speed-up technique; single receiver coil) and k-t SENSE (sensitivity encoding; multiple receiver coils) consider spatiotemporal correlations throughout the image and rely on undersampling and signal overlap (aliasing) recovery through computational algorithms [7, 8]. Signal correlations and coil sensitivity estimates are obtained in an initial low-resolution acquisition (training stage), and this information is used afterwards for image reconstruction, allowing acceleration by sparsely sampling k-space over time in the main acquisition stage [9].…”

Section: Introductionmentioning

confidence: 99%

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Clinical evaluation of left ventricular function and morphology using an accelerated k-t sensitivity encoding method in cardiovascular magnetic resonance

et al. 2019

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Objectives To provide clinical validation of a recent 2D SENSE-based accelerated cardiovascular magnetic resonance (CMR) sequence (accelerated k-t SENSE), investigating whether this technique accurately quantifies left ventricle (LV) volumes, function, and mass as compared to 2D cine steady-state free precession (2D-SSFP). Methods Healthy volunteers ( n = 16) and consecutive heart failure patients ( n = 26) were scanned using a 1.5 T MRI system. Two LV short axis (SA) stacks were acquired: (1) accelerated k-t SENSE (5–6 breath-holds; temporal/spatial resolution: 37 ms/1.82 × 1.87 mm; acceleration factor = 4) and (2) standard 2D-SSFP (10–12 breath-holds; temporal/spatial resolution: 49 ms/1.67 × 1.87 mm, parallel imaging). Ascending aorta phase-contrast was performed on all volunteers as a reference to compare LV stroke volumes (LVSV) and validate the sequences. An image quality score for SA images was used, with lower scores indicating better quality (from 0 to 18). Results There was a high agreement between accelerated k-t SENSE and 2D-SSFP for LV measurements: bias (limits of agreement) of 2.4% (− 5.4% to 10.1%), 6.9 mL/m 2 (− 4.7 to 18.6 mL/m 2 ), − 1.5 (− 8.3 to 5.2 mL/m 2 ), and − 0.2 g/m 2 (− 11.9 to 12.3 g/m 2 ) for LV ejection fraction, end-diastolic volume index, end-systolic volume index, and mass index, respectively. LVSV by accelerated k-t SENSE presented good agreement with aortic flow. Interobserver and intraobserver variabilities for all LV parameters were also high. Conclusion The accelerated k-t SENSE CMR sequence is clinically feasible and accurately quantifies LV volumes, function, and mass, with short acquisition time and good image quality.

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Section: Discussionsupporting

confidence: 66%

Section: Introductionmentioning

confidence: 99%

Clinical evaluation of left ventricular function and morphology using an accelerated k-t sensitivity encoding method in cardiovascular magnetic resonance

et al. 2019

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“…To overcome the technical limitations of 2D bSSFP cine described above, several free-breathing cine sequences have been adopted to achieve faster CMR without affecting the temporal and spatial resolution of sequences [3,[14][15][16][17]. We reported previously that respiratory-triggered 2D cine was a reliable technique for the evaluation of biventricular volumes and function in patients with repaired tetralogy of Fallot [7].…”

Section: Limitations Of Breath-hold Two-dimensional Balanced Steady-s...mentioning

confidence: 99%

Reliability of respiratory-gated real-time two-dimensional cine incorporating deep learning reconstruction for the assessment of ventricular function in an adult population

Orii

Sone

Osaki

et al. 2023

Int J Cardiovasc Imaging

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This study aimed to assess the image quality and accuracy of respiratory-gated real-time two-dimensional (2D) cine incorporating deep learning reconstruction (DLR) for the quanti cation of biventricular volumes and function compared with those of the standard reference, that is, breath-hold 2D balanced steady-state free precession (bSSFP) cine, in an adult population. Twenty-four patients (15 men, mean age 50.7 ± 16.5 years) underwent cardiac magnetic resonance for clinical indications, and 2D DLR and bSSFP cine were acquired on the short-axis view. The image quality scores were based on three main criteria: blood-to-myocardial contrast, endocardial edge delineation, and presence of motion artifacts throughout the cardiac cycle. Biventricular end-diastolic volume (EDV), end-systolic volume (ESV), stroke volume (SV), ejection fraction (EF), and left ventricular mass (LVM) were analyzed. The 2D DLR cine had signi cantly shorter scan time than bSSFP (41.0 ± 11.3 s vs. 327.6 ± 65.8 s; p < 0.0001). Despite an analysis of endocardial edge de nition and motion artifacts showed signi cant impairment using DLR cine compared with bSSFP (p < 0.01), the two sequences demonstrated no signi cant difference in terms of biventricular EDV, ESV, SV, and EF (p > 0.05). Moreover, the linear regression yielded good agreement between the two techniques (r ≥ 0.76). However, the LVM was underestimated for DLR cine (109.8 ± 34.6 g) compared with that for bSSFP (116.2 ± 40.2 g; p = 0.0291). Respiratory-gated 2D DLR cine is a reliable technique that could be used in the evaluation of biventricular volumes and function in an adult population.

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“…In such situations, the temporal information is repeated, and thus the temporal frequency domain is sparse, improving the k-t BLAST reconstruction. For instance, accelerated 2D and 3D cine cardiac data may be reconstructed using k-t BLAST [21] [22]. Similarly, real-time free-running and non-gated cardiac scans can also be accelerated using k-t BLAST, thereby enabling rapid imaging of the true motion of the heart [23].…”

Section: Introductionmentioning

confidence: 99%

a-f BLAST: Non-Iterative Radial k-t BLAST Reconstruction for Real-Time Imaging

Kretzler

Hamilton

Griswold

et al. 2019

IEEE Trans. Med. Imaging

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Non-Cartesian trajectories are advantageous in the collection and reconstruction of dynamic MR images. Like many other fast imaging methods, the reconstruction technique k-t BLAST has been extended to non-Cartesian k-t BLAST through a Conjugate Gradient based approach. However, it is necessary to transform and grid the data to a Cartesian domain as part of the reconstruction, a process which can be time consuming and computationally intensive. In this manuscript, a new non-iterative reconstruction, a-f BLAST, is proposed to extend k-t BLAST to radial sampling. The a-f BLAST reconstruction is performed in a previously unexplored domain termed the angular frequency-temporal frequency (a-f) space and uses similar steps to Cartesian k-t BLAST. The performance of this method was demonstrated on retrospectively undersampled numerical phantoms and compared to k-t BLAST, non-Cartesian k-t BLAST, and the sliding window technique. Additionally, the reconstruction was tested on retrospectively and prospectively undersampled in vivo cardiac data. a-f BLAST is shown to have a similar reconstruction time as kt BLAST as well as outperform k-t BLAST in terms of RMSE.

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Three-dimensional Magnetic Resonance Imaging Using Single Breath-hold k-t BLAST for Assessment of Global Left Ventricular Functional Parameters

Cited by 11 publications

References 25 publications

Clinical evaluation of left ventricular function and morphology using an accelerated k-t sensitivity encoding method in cardiovascular magnetic resonance

Clinical evaluation of left ventricular function and morphology using an accelerated k-t sensitivity encoding method in cardiovascular magnetic resonance

Reliability of respiratory-gated real-time two-dimensional cine incorporating deep learning reconstruction for the assessment of ventricular function in an adult population

a-f BLAST: Non-Iterative Radial k-t BLAST Reconstruction for Real-Time Imaging

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