1.   Angioplasty requires placement of an inflatable balloon in a closed-up artery, and bypass surgery requires grafting another blood vessel on to the diseased artery.

2.   By contrast, angioplasty requires placement of an inflatable balloon in a closed-up artery and bypass surgery requires grafting another blood vessel onto the diseased artery.

3.   The doctors inserted a catheter with an inflatable balloon to open up an artery and implanted a stent to keep it open.

4.   They might also purchase giant inflatable balloons shaped like iMac computers, and erect them near the event.

5.   Balloon angioplasty is a technique for repairing blood vessels using tiny inflatable balloons.