Research Article
[Retracted] Clinical Comparison of Endoscopic Ultrasonography and CT in Preoperative TN Staging of Esophagogastric Junction Cancer
Table 1
Propagation velocity table of ultrasonic waves between various tissues of the human body.
| Human tissue | Transmission speed | Characteristic impedance (kgm−2s−1) |
| Blood | 1570 m/s | 1.60 × 106 | Brain tissue | 1540 m/s | 1.59 × 106 | Fat | 1540 m/s | 1.39 × 106 | Liver | 1550 m/s | 1.65 × 106 | Muscle | 1590 m/s | 1.71 × 106 | Skull | 4000 m/s | 7.79 × 106 | Soft tissue | 1540 m/s | 1.62 × 106 |
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