Skeletal muscle strength in-vivo measurement method through ultrasonic fusion MRI imaging

The invention discloses a skeletal muscle strength in-vivo measurement method through ultrasonic fusion MRI imaging. The method comprises the following steps that 1, MRI imaging scanning is conducted on skeletal muscles of the detected portions, and a skeletal muscle three-dimensional static model is built; 2, ultrasonic scanning is conducted on the skeletal muscles of in-vivo activity, and a skeletal muscle two-dimensional dynamic image is obtained; 3, the skeletal muscle two-dimensional dynamic image is processed and analyzed, and thickness parameters of the skeletal muscles are obtained; 4, the skeletal muscle three-dimensional static model and the thickness parameters of the skeletal muscles are subjected to fusion imaging, and a skeletal muscle in-vivo three-dimensional dynamic model is obtained; 5, the skeletal muscle in-vivo three-dimensional dynamic model is analyzed, and skeletal muscle in-vivo activity three-dimensional morphological parameters of the detected portions are obtained; 6, according to