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

Article Article scientifique Article Real-time, single breath-hold, multi-slice, 2D cine radial MR image reconstruction using sc-GROG k-t ESPIRiT eng 2022-11-11 2022-11-11 author Aslam Ibtisam 0000-0002-8169-6147 919323 Département de radiologie et informatique médicale (RADIO) author Crowe Lindsey 681676 Département de radiologie et informatique médicale (RADIO) author Kassai Miklos 912922 author Qazi Sohaib Ayaz 973167 author Omer Hammad author Vallée Jean-Paul 0000-0001-7546-2013 29185 Département de radiologie et informatique médicale (RADIO) 065037 10.1088/2057-1976/ac9f4e 36322961 2057-1976 https://iopscience.iop.org/article/10.1088/2057-1976/ac9f4e 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. 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 Dewey 616.0757 62 Département de radiologie et informatique médicale 227 false 286 Imagerie cardiaque fonctionnelle 541 Biomedical physics & engineering express 8 6 2fe8fdaf-8f69-4f32-832d-c0145764f3ed Article (Published version) Public REAL TIME SINGLE BREATH-HOLD.pdf 2699052 application/pdf CC BY-4.0 0055d6d788c4542fd69aa58965d52089c7cd7e43905fec07bafb3b47c5b0a6bb openAccess Faculté de médecine / Section de médecine clinique / Département de radiologie et informatique médicale

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Real-time, single breath-hold, multi-slice, 2D cine radial MR image reconstruction using sc-GROG k-t ESPIRiT	Biomedical physics & engineering express			2022	103	187

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Qazi, Sohaib Ayaz