Abdominal aortic elasticity的用法和样例：
- The abdominal aorta is normally smaller than the thoracic aorta.
- A pulsatile midline mass suggests ruptured abdominal aortic aneurysm.
- Method: The SD rat model with HF was produced by constricting abdominal aorta.
- Methods To establish the rat model with constriction of the abdominal aorta.