Purpose To develop an efficient 3D affine respiratory motion compensation framework for Cartesian whole-heart coronary magnetic resonance angiography (MRA). Materials and Methods The proposed method achieves 100% scan efficiency by estimating the affine respiratory motion from the data itself and correcting the acquired data in the reconstruction process. For this, a golden-step Cartesian sampling with spiral profile ordering was performed to enable reconstruction of respiratory resolved images at any breathing position and with different respiratory window size. Affine motion parameters were estimated from image-based registration of 3D undersampled respiratory resolved images reconstructed with iterative SENSE and motion correction was performed directly in the reconstruction using a multiple-coils generalized matrix formulation method. This approach was tested on healthy volunteers and compared against a conventional diaphragmatic navigator-gated acquisition using quantitative and qualitative image quality assessment. Results The proposed approach achieved 47 ± 12% and 59 ± 6% vessel sharpness for the right (RCA) and left (LAD) coronary arteries, respectively. Also, good quality visual scores of 2.4 ± 0.74 and 2.44 ± 0.86 were observed for the RCA and LAD (scores from 0, no to 4, excellent coronary vessel delineation). A not statically significant difference (P = 0.05) was found between the proposed method and an 8-mm navigator-gated and tracked scan, although scan efficiency increased from 61 ± 10% to 100%. Conclusion We demonstrate the feasibility of a new 3D affine respiratory motion correction technique for Cartesian whole-heart CMRA that achieves 100% scan efficiency and therefore a predictable acquisition time. This approach yields image quality comparable to that of an 8-mm navigator-gated acquisition with lower scan efficiency. Further evaluation of this technique in patients is now warranted to determine its clinical use.


    Access

    Download


    Export, share and cite



    Title :

    Highly efficient respiratory motion compensated free-breathing coronary mra using golden-step Cartesian acquisition


    Contributors:

    Publication date :

    2015-02-19


    Remarks:

    Prieto , C , Doneva , M , Usman , M , Henningsson , M , Greil , G , Schaeffter , T & Botnar , R M 2015 , ' Highly efficient respiratory motion compensated free-breathing coronary mra using golden-step Cartesian acquisition ' , Journal of Magnetic Resonance Imaging , vol. 41 , no. 3 , pp. 738-746 . https://doi.org/10.1002/jmri.24602



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    DDC:    629



    Optimized respiratory-resolved motion-compensated 3D Cartesian coronary MR angiography

    Correia, Teresa / Ginami, Giulia / Cruz, Gastão et al. | BASE | 2018

    Free access

    Load compensated mechanical arm with cartesian motion

    European Patent Office | 2021

    Free access

    Load compensated mechanical arm with cartesian motion

    European Patent Office | 2021

    Free access

    Load compensated mechanical arm with cartesian motion

    European Patent Office | 2021

    Free access

    Breathing motion compensated registration of laparoscopic liver ultrasound to CT

    Ramalhinho, J / Robu, M / Thompson, S et al. | BASE | 2017

    Free access