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Scientific article
Open access
English

Real-time, single breath-hold, multi-slice, 2D cine radial MR image reconstruction using sc-GROG k-t ESPIRiT

Published inBiomedical physics & engineering express, vol. 8, no. 6, 065037
Publication date2022-11-11
First online date2022-11-11
Abstract

Abstract

Background: Multi-slice, multiple breath-hold ECG-gated 2D cine MRI is a standard technique for evaluating heart function and restricted to one or two images per breath-hold. Therefore, the standard cine MRI requires long scan time and can result in slice-misalignments because of various breath-hold locations in the multiple acquisitions.

Methods: This work proposes the sc-GROG based k-t ESPIRiT with Total Variation (TV) constraint (sc-GROG k-t ESPIRiT) to reconstruct unaliased cardiac real-time cine MR images from highly accelerated whole heart multi-slice, single breath-hold, real-time 2D cine radial data acquired using the balanced steady-state free precession (trueFISP) sequence in 8 patients. The proposed method quality is assessed via Artifact Power (AP), Root-Mean Square Error (RMSE), Structure Similarity Index (SSIM), Peak Signal-to-Noise Ratio (PSNR), blood-pool to myocardial Contrast-to-Noise-Ratio (CNR), Signal-to-Noise-Ratio (SNR) and spatial-temporal intensity plots through the blood-myocardium boundary. The proposed method quantitative results are compared with the NUFFT based k-t ESPIRiT with Total Variation (TV) constraint (NUFFT k-t ESPIRiT) approach. Furthermore, clinical analysis and function quantification are assessed by Bland–Altman (BA) analyses.

Results: As supported by the visual assessment and evaluation parameters, the reconstruction results of the sc-GROG k-t ESPIRiT approach provide an average 21%, 12%, 1% and 47% improvement in AP, RMSE, SSIM and PSNR, respectively in comparison to the NUFFT k-t ESPIRiT approach. Furthermore, the proposed method gives on average 45% and 58% improved blood-pool to myocardial CNR and SNR than the NUFFT k-t ESPIRiT approach. Also, from the BA plot, the proposed method gives better left ventricular and right ventricular function measurements as compared to the NUFFT k-t ESPIRiT scheme.

Conclusions: The sc-GROG k-t ESPIRiT (Proposed Method) improves the spatio-temporal quality of the whole heart multi-slice, single breath-hold, real-time 2D cine radial MR and semi-automated analysis using standard clinical software, as compared to the NUFFT k-t ESPIRiT approach.

eng
Keywords
  • Cine MRI
  • ESPIRiT
  • NUFFT
  • sc-GROG
  • Multi-slice
  • Radial
  • Real-time
  • Breath Holding
  • Heart / diagnostic imaging
  • Heart Ventricles
  • Humans
  • Image Processing, Computer-Assisted
  • Magnetic Resonance Imaging, Cine / methods
Citation (ISO format)
ASLAM, Ibtisam et al. Real-time, single breath-hold, multi-slice, 2D cine radial MR image reconstruction using sc-GROG k-t ESPIRiT. In: Biomedical physics & engineering express, 2022, vol. 8, n° 6, p. 065037. doi: 10.1088/2057-1976/ac9f4e
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Article (Published version)
Identifiers
ISSN of the journal2057-1976
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Technical informations

Creation11/30/2022 12:43:53 PM
First validation05/16/2023 7:36:33 AM
Update time05/16/2023 7:36:33 AM
Status update05/16/2023 7:36:33 AM
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