Abstract
To analyze the application value of high-frequency ultrasound in the muscles, bones and the thoracodorsal artery in the subscapular region and summarize the characteristics of ultrasound. Subscapularis muscle, bone and thoracodorsal artery of 72 healthy subjects were examined using high-frequency ultrasound, the initial segment diameter of the thoracodorsal artery and peak systolic blood flow velocity were recorded, and the ultrasonographic characteristics of subscapularis muscle, bone and thoracodorsal artery were summarized. The spinous processes of 7th thoracic vertebrae, 9th thoracic vertebrae and 11th thoracic vertebrae all showed strong echoes with posterior acoustic shadow. The vertebral plates of 8th thoracic vertebrae, 10th thoracic vertebrae and 11th thoracic vertebrae showed a strong linear echo on both sides of the spinous process, and the lateral side was connected with the transverse processes of 8th thoracic vertebrae, 10th thoracic vertebrae, and 11th thoracic vertebrae. The inferior scapular artery was launched from the axillary artery, along with the deep side of the inferior scapular muscle, the latissimus dorsi and teres major muscle, and then it went inferior and backward which was then divided into arteriae dorsalis scapulae and thoracodorsal artery, showing a tubular structure with no echo. Color Doppler Flow Imaging (CDFI) showed the endovascular blood flow signal of the inferior scapular artery and its branches. The internal diameter of the initial segment of the thoracodorsal artery of the male subjects was bigger than that of the female subjects, and the difference was statistically significant (p < 0.05). High-frequency ultrasound can provide a reliable reference for the anatomical structure and adjacent relationship of subscapular muscles, bones and thoracodorsal artery, and is worthy of being promoted as a non-invasive and reliable mean of examination.
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