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Intravoxel Incoherent Motion Diffusion Weighted MR Imaging to Evaluate Myocardial Microvascular Dysfunction of Exertional Heat Illness

Purpose: To investigate the feasibility of assessing myocardial microvascular perfusion of patients with exertional heat illness (EHI) by intravoxel incoherent motion imaging. Methods: CMR-IVIM image quality was evaluated with a 3-point scale. CMR-IVIM derived parameters were analyzed and compared between EHI and HC. Receiver operating characteristic curve was used. Results: CMR-IVIM image quality were significantly improved. EHI patients showed decreased D*, decreased f values and higher D values compared to HC. f showed the most robust efficacy for detecting EHI related myocardial injury with the highest area under the curve. Conclusion: CMR-IVIM can evaluate myocardial injury of EHI patients.

ISMRM

Zhang Jun Luo Song Dou Weiqiang

ISMRM Annual Meeting

2024

Title: Intravoxel Incoherent Motion Diffusion Weighted MR Imaging to Evaluate Myocardial Microvascular Dysfunction of Exertional Heat Illness

Description:

Purpose: To investigate the feasibility of assessing myocardial microvascular perfusion of patients with exertional heat illness (EHI) by intravoxel incoherent motion imaging.

Methods: CMR-IVIM image quality was evaluated with a 3-point scale.

CMR-IVIM derived parameters were analyzed and compared between EHI and HC.

Receiver operating characteristic curve was used.

Results: CMR-IVIM image quality were significantly improved.

EHI patients showed decreased D*, decreased f values and higher D values compared to HC.

f showed the most robust efficacy for detecting EHI related myocardial injury with the highest area under the curve.

Conclusion: CMR-IVIM can evaluate myocardial injury of EHI patients.

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