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Arani A, Murphy MC, Bhopalwala H, Arunachalam SP, Rossman PJ, Trzasko JD, Glaser K, Sui Y, Gunderson T, Arruda-Olson AM, Manduca A, Kantarci K, Ehman RL, Araoz PA. Sex Differences in Aging-related Myocardial Stiffening Quantitatively Measured with MR Elastography. Radiol Cardiothorac Imaging 2024; 6:e230140. [PMID: 38780427 DOI: 10.1148/ryct.230140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Purpose To investigate the feasibility of using quantitative MR elastography (MRE) to characterize the influence of aging and sex on left ventricular (LV) shear stiffness. Materials and Methods In this prospective study, LV myocardial shear stiffness was measured in 109 healthy volunteers (age range: 18-84 years; mean age, 40 years ± 18 [SD]; 57 women, 52 men) enrolled between November 2018 and September 2019, using a 5-minute MRE acquisition added to a clinical MRI protocol. Linear regression models were used to estimate the association of cardiac MRI and MRE characteristics with age and sex; models were also fit to assess potential age-sex interaction. Results Myocardial shear stiffness significantly increased with age in female (age slope = 0.03 kPa/year ± 0.01, P = .009) but not male (age slope = 0.008 kPa/year ± 0.009, P = .38) volunteers. LV ejection fraction (LVEF) increased significantly with age in female volunteers (0.23% ± 0.08 per year, P = .005). LV end-systolic volume (LVESV) decreased with age in female volunteers (-0.20 mL/m2 ± 0.07, P = .003). MRI parameters, including T1, strain, and LV mass, did not demonstrate this interaction (P > .05). Myocardial shear stiffness was not significantly correlated with LVEF, LV stroke volume, body mass index, or any MRI strain metrics (P > .05) but showed significant correlations with LV end-diastolic volume/body surface area (BSA) (slope = -3 kPa/mL/m2 ± 1, P = .004, r2 = 0.08) and LVESV/BSA (-1.6 kPa/mL/m2 ± 0.5, P = .003, r2 = 0.08). Conclusion This study demonstrates that female, but not male, individuals experience disproportionate LV stiffening with natural aging, and these changes can be noninvasively measured with MRE. Keywords: Cardiac, Elastography, Biological Effects, Experimental Investigations, Sexual Dimorphisms, MR Elastography, Myocardial Shear Stiffness, Quantitative Stiffness Imaging, Aging Heart, Myocardial Biomechanics, Cardiac MRE Supplemental material is available for this article. Published under a CC BY 4.0 license.
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Affiliation(s)
- Arvin Arani
- From the Departments of Radiology (A.A., M.C.M., H.B., S.P.A., P.J.R., J.D.T., K.G., Y.S., A.M., K.K., R.L.E., P.A.A.), Quantitative Health Science (T.G.), and Cardiology (A.M.A.O.), Mayo Clinic, 200 First St SW, Rochester, MN 55905
| | - Matthew C Murphy
- From the Departments of Radiology (A.A., M.C.M., H.B., S.P.A., P.J.R., J.D.T., K.G., Y.S., A.M., K.K., R.L.E., P.A.A.), Quantitative Health Science (T.G.), and Cardiology (A.M.A.O.), Mayo Clinic, 200 First St SW, Rochester, MN 55905
| | - Huzefa Bhopalwala
- From the Departments of Radiology (A.A., M.C.M., H.B., S.P.A., P.J.R., J.D.T., K.G., Y.S., A.M., K.K., R.L.E., P.A.A.), Quantitative Health Science (T.G.), and Cardiology (A.M.A.O.), Mayo Clinic, 200 First St SW, Rochester, MN 55905
| | - Shivaram P Arunachalam
- From the Departments of Radiology (A.A., M.C.M., H.B., S.P.A., P.J.R., J.D.T., K.G., Y.S., A.M., K.K., R.L.E., P.A.A.), Quantitative Health Science (T.G.), and Cardiology (A.M.A.O.), Mayo Clinic, 200 First St SW, Rochester, MN 55905
| | - Phillip J Rossman
- From the Departments of Radiology (A.A., M.C.M., H.B., S.P.A., P.J.R., J.D.T., K.G., Y.S., A.M., K.K., R.L.E., P.A.A.), Quantitative Health Science (T.G.), and Cardiology (A.M.A.O.), Mayo Clinic, 200 First St SW, Rochester, MN 55905
| | - Joshua D Trzasko
- From the Departments of Radiology (A.A., M.C.M., H.B., S.P.A., P.J.R., J.D.T., K.G., Y.S., A.M., K.K., R.L.E., P.A.A.), Quantitative Health Science (T.G.), and Cardiology (A.M.A.O.), Mayo Clinic, 200 First St SW, Rochester, MN 55905
| | - Kevin Glaser
- From the Departments of Radiology (A.A., M.C.M., H.B., S.P.A., P.J.R., J.D.T., K.G., Y.S., A.M., K.K., R.L.E., P.A.A.), Quantitative Health Science (T.G.), and Cardiology (A.M.A.O.), Mayo Clinic, 200 First St SW, Rochester, MN 55905
| | - Yi Sui
- From the Departments of Radiology (A.A., M.C.M., H.B., S.P.A., P.J.R., J.D.T., K.G., Y.S., A.M., K.K., R.L.E., P.A.A.), Quantitative Health Science (T.G.), and Cardiology (A.M.A.O.), Mayo Clinic, 200 First St SW, Rochester, MN 55905
| | - Tina Gunderson
- From the Departments of Radiology (A.A., M.C.M., H.B., S.P.A., P.J.R., J.D.T., K.G., Y.S., A.M., K.K., R.L.E., P.A.A.), Quantitative Health Science (T.G.), and Cardiology (A.M.A.O.), Mayo Clinic, 200 First St SW, Rochester, MN 55905
| | - Adelaide M Arruda-Olson
- From the Departments of Radiology (A.A., M.C.M., H.B., S.P.A., P.J.R., J.D.T., K.G., Y.S., A.M., K.K., R.L.E., P.A.A.), Quantitative Health Science (T.G.), and Cardiology (A.M.A.O.), Mayo Clinic, 200 First St SW, Rochester, MN 55905
| | - Armando Manduca
- From the Departments of Radiology (A.A., M.C.M., H.B., S.P.A., P.J.R., J.D.T., K.G., Y.S., A.M., K.K., R.L.E., P.A.A.), Quantitative Health Science (T.G.), and Cardiology (A.M.A.O.), Mayo Clinic, 200 First St SW, Rochester, MN 55905
| | - Kejal Kantarci
- From the Departments of Radiology (A.A., M.C.M., H.B., S.P.A., P.J.R., J.D.T., K.G., Y.S., A.M., K.K., R.L.E., P.A.A.), Quantitative Health Science (T.G.), and Cardiology (A.M.A.O.), Mayo Clinic, 200 First St SW, Rochester, MN 55905
| | - Richard L Ehman
- From the Departments of Radiology (A.A., M.C.M., H.B., S.P.A., P.J.R., J.D.T., K.G., Y.S., A.M., K.K., R.L.E., P.A.A.), Quantitative Health Science (T.G.), and Cardiology (A.M.A.O.), Mayo Clinic, 200 First St SW, Rochester, MN 55905
| | - Philip A Araoz
- From the Departments of Radiology (A.A., M.C.M., H.B., S.P.A., P.J.R., J.D.T., K.G., Y.S., A.M., K.K., R.L.E., P.A.A.), Quantitative Health Science (T.G.), and Cardiology (A.M.A.O.), Mayo Clinic, 200 First St SW, Rochester, MN 55905
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