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Heterogeneous parameters of non-contrast enhanced CMR T1/T2 mapping in detecting cardiac involvement in neuromuscular diseases
HUANG Lu  ZHAO Peijun  TANG Dazhong  RAN Lingping  XIA Liming 

Cite this article as: Huang L, Zhao PJ, Tang DZ, et al. Heterogeneous parameters of non-contrast enhanced CMR T1/T2 mapping in detecting cardiac involvement in neuromuscular diseases[J]. Chin J Magn Reson Imaging, 2022, 13(12): 6-12. DOI:10.12015/issn.1674-8034.2022.12.002.

[Abstract] Objective To investigate the diagnostic value of cardiac magnetic resonance (CMR) native T1/T2 mapping parameters to detect cardiac involvement in neuromuscular diseases (NMDs).Materials and Methods This study retrospectively analyzed 60 cases of NMD patients, while 20 age and gender-matched healthy controls were enrolled in this study. NMDs patients with abnormal electrocardiograph (ECG) or positive late gadolinium enhancement (LGE) or reduced left ventricle ejection fraction (LVEF)/right ventricle ejection fraction (RVEF) were categorized as the cardiac involvement subgroup. All subjects underwent a CMR exam on a 3.0 T MR scanner, including short-axis steady-state free precession (SSFP) cine, native T1/T2 mapping and LGE sequences, covering the whole heart. Histogram obtained by T1/T2 mapping and six parameters were calculated, including mean, median, standard deviation (SD), minimum, maximum and entropy were calculated from the T1/T2 mapping. All quantitative data were compared by analysis of variance (ANOVA) or Kruskal-Wallis test among three groups. Multivariate logistics regression analysis was used to establish a CMR multi-parametric model, and receiver operator characteristic (ROC) curve was used to evaluate the diagnostic performance of quantitative parameters as well as multi-parametric model of CMR T1/T2 mapping in detecting NMD cardiac involvement.Results Forty-one NMDs patients were categorized as the cardiac involvement subgroup, and the remaining 19 were categorized as the non-involvement subgroup. Compared to the controls, T1 mean, median, SD, maximum and entropy, as well as T2 mean, median, maximum and entropy of the cardiac involvement subgroup all elevated significantly (P<0.05 for all), while in the non-involvement subgroup, only native T1 mean and median increased (P<0.05 for both). The native T1/T2 SD and entropy as well as T1 maximum, were all significantly higher in the cardiac involvement subgroup compared to then non-involvement subgroup (P<0.05 for all). A multi-variate regression model including all heterogeneous parameters exhibited a diagnostic accuracy of 83.0% (area under ROC curve: 0.81, 95% confidence interval: 0.72-0.94) to detect cardiac involvement in NMDs patients.Conclusions Heterogeneous parameters of non-contrast enhanced CMR T1/T2 mapping can detect cardiac involvement in patients with NMD, and the multi-parameter model had the highest diagnostic efficiency. The multi-heterogeneity parameter model provides a new method for the detection of cardiac involvement in patients with NMD. It has great potential in early screening of cardiac involvement in patients with NMD and has a wide clinical application prospect.
[Keywords] neuromuscular diseases;cardiac involvement;magnetic resonance imaging;cardiac magnetic resonance;longitudinal relaxation time;transverse relaxation time;heterogeneity

HUANG Lu   ZHAO Peijun   TANG Dazhong   RAN Lingping   XIA Liming*  

Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China

Xia LM, E-mail:

Conflicts of interest   None.

ACKNOWLEDGMENTS National Natural Science Foundation of China (No. 81873889); Hubei Provincial Science and Technology Program Youth Fund (No. 2021CFB060).
Received  2022-08-02
Accepted  2022-11-28
DOI: 10.12015/issn.1674-8034.2022.12.002
Cite this article as: Huang L, Zhao PJ, Tang DZ, et al. Heterogeneous parameters of non-contrast enhanced CMR T1/T2 mapping in detecting cardiac involvement in neuromuscular diseases[J]. Chin J Magn Reson Imaging, 2022, 13(12): 6-12. DOI:10.12015/issn.1674-8034.2022.12.002.

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