Rapid magnetic resonance elastography of muscle using one-dimensional projection

Sabine F. Bensamoun, Kevin J. Glaser, Stacie I. Ringleb, Qingshan Chen, Richard L. Ehman, Kai Nan An

研究成果: Article同行評審

27 引文 斯高帕斯(Scopus)

摘要

Purpose: To demonstrate the feasibility of 1D MR elastography (MRE) to rapidly assess skeletal muscle stiffness in vivo. Materials and Methods: Shear waves were induced in the vastus medialis muscle (VM) using a pneumatic driver at 90 Hz and 2D MRE data were collected. Spatially selective excitations were used to produce 1D projections of MRE data oriented along the direction of propagating waves in the muscle. Data were collected with the thigh muscles relaxed and contracted at 20% maximum voluntary contraction (MVC) and the knee flexed at 30°. Results: The muscle stiffness measured at rest and in contraction with 1D MRE was 3.69 ± 0.80 kPa and 9.52 ± 2.74 kPa, respectively, and 4.36 ± 0.98 kPa and 9.22 ± 1.29 kPa, respectively, with the 2D MRE technique. Conclusion: Muscle stiffness measured using 1D MRE was in agreement with 2D MRE while reducing the scan time by a factor of 4.

原文English
頁(從 - 到)1083-1088
頁數6
期刊Journal of Magnetic Resonance Imaging
27
發行號5
DOIs
出版狀態Published - 2008 五月

All Science Journal Classification (ASJC) codes

  • 放射學、核子醫學和影像學

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