Complementary radial tagging for improved myocardial tagging contrast

Wang, Zhe; Nasiraei-Moghaddam, Abbas; Reyhan, Meral; Srinivasan, Suseela; Finn, J. Paul; Ennis, Daniel B.

doi:10.1002/mrm.25259

Cited by 2 publications

(3 citation statements)

References 18 publications

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“…The tag lines and the intersections of the gridlines serve as “markers” for tissue tracking and deformation can be analyzed using several commercially available software packages. Other techniques of tagging include polar tags [44] and complementary radial tags [45] (Figure 2B, right panel). Recently, Feature Tracking was developed [46–47].…”

Section: Cmr Techniques For Assessment Of Myocardial Remodelingmentioning

confidence: 99%

Cardiac MRI: a Translational Imaging Tool for Characterizing Anthracycline-Induced Myocardial Remodeling

Nguyen

Ennis

et al. 2016

Curr Oncol Rep

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Cardiovascular side effects of cancer therapeutics are the leading causes of morbidity and mortality in cancer survivors. Anthracyclines (AC) serve as the backbone of many anti-cancer treatment strategies, but dose-dependent myocardial injury limits their use. Cumulative AC exposure can disrupt the dynamic equilibrium of the myocardial microarchitecture while repeated injury and repair leads to myocyte loss, interstitial myocardial fibrosis, and impaired contractility. Although children are assumed to have greater myocardial plasticity, AC exposure at a younger age portends worse prognosis. In older patients, there is lower overall survival once they develop cardiovascular disease. Because aberrations in the myocardial architecture predispose the heart to a decline in function, early detection with sensitive imaging tools is crucial and the implications for resource utilization are substantial. As a comprehensive imaging modality, cardiac magnetic resonance (CMR) imaging is able to go beyond quantification of ejection fraction and myocardial deformation to characterize adaptive microstructural and microvascular changes that are important to myocardial tissue health.Herein, we describe CMR as an established translational imaging tool that can be used clinically to characterize ACassociated myocardial remodeling.

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Section: Cmr Techniques For Assessment Of Myocardial Remodelingmentioning

confidence: 99%

Cardiac MRI: a Translational Imaging Tool for Characterizing Anthracycline-Induced Myocardial Remodeling

Nguyen

Ennis

et al. 2016

Curr Oncol Rep

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“…The conventional grid tagging, however, has limited sensitivity for extracting torsional motion. The radial tagging, 12–15 in particular, is optimally adapted to the LV geometry for precise quantification of its rotational motion with equal sensitivity around the LV 16 …”

Section: Introductionmentioning

confidence: 99%

“…10,11 The conventional grid tagging, however, has limited sensitivity for extracting torsional motion. The radial tagging, [12][13][14][15] in particular, is optimally adapted to the LV geometry for precise quantification of its rotational motion with equal sensitivity around the LV. 16 The LV torsional motion undergoes small temporary changes to adapt the heart function with its loading condition.…”

Section: Introductionmentioning

confidence: 99%

Real‐time radial tagging for quantification of left ventricular torsion

Mohammadi

Nasiraei-Moghaddam

Uecker

2022

Magnetic Resonance in Med

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To develop a real-time radial tagging MRI for accurate measurement of rotational motion and twist of the left ventricle (LV).Methods: A FLASH-based radial tagging sequence with an undersampled radial reading scheme was developed for both single and double-slice imaging in real-time. The Polar Fourier Transform was used for reconstruction to push the undersampling artifacts out of a reduced FOV. The developed technique was used to image five normal subjects during rest, plus one during both exercise and rest conditions. LV rotational motions were estimated for five consecutive cardiac cycles in all cases. The process was validated using a numerical phantom.The real-time measurement of global rotational motion was compared with those measured from a non-real-time exam using linear regression analysis and the Bland-Altman plot. Results:The real-time acquisition was performed successfully with a temporal resolution of 46.2 ms. Image quality was sufficient for the reproducible calculation of rotation at rest and exercise. The feasibility of double-slice acquisition on human was further studied and a real-time twist of the left ventricle was demonstrated. The difference between LV global rotations from real-time and nonreal-time approaches was 0.27 degrees. A significant reverse recoiling, induced by exercise, was reproducibly measured by the technique. Conclusion: A real-time radial tagging MRI technique was developed based on the undersampled radial acquisition and Polar Fourier Transform reconstruction, for accurate measuring of the heart rotational motion and twist. The technique was able to extract a meaningful change of diastolic recoiling under stress test conditions during physical activities (cycling).

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Complementary radial tagging for improved myocardial tagging contrast

Cited by 2 publications

References 18 publications

Cardiac MRI: a Translational Imaging Tool for Characterizing Anthracycline-Induced Myocardial Remodeling

Cardiac MRI: a Translational Imaging Tool for Characterizing Anthracycline-Induced Myocardial Remodeling

Real‐time radial tagging for quantification of left ventricular torsion

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