What pressure range can be achieved by twisting the plunger in the inflation device?

The range of 20-30 atmospheres (atm) is pertinent when discussing the inflation devices used in interventional radiology, especially in procedures that involve balloon angioplasty or stent placement.

Inflation devices are designed to achieve high-pressure levels to ensure effective dilation of vessels or structures. The specific range of 20-30 atm is critical for achieving optimal results, as it allows the balloon to expand properly, ensuring that it can effectively compress plaque or expand narrowed arteries.

In clinical scenarios, achieving pressures below this range, such as in the 0-10 atm or 10-20 atm ranges, may not provide sufficient force to adequately open up occluded or stenosed vessels. On the other hand, pressures above 30 atm, while achievable in certain circumstances, typically exceed the safe working limits of many inflatable devices and can risk complications such as vessel rupture. Therefore, the 20-30 atm range strikes a balance between effective treatment and safety, making it the correct answer for this question.