Which kVp would most likely require a thicker apron for adequate protection?

In the context of radiation protection, the kilovolt peak (kVp) setting plays a significant role in determining the penetrating power of X-ray beams. Higher kVp values produce X-rays with greater energy, which can penetrate materials more effectively, including protective aprons.

As the kVp increases, the energy of the radiation rises, necessitating thicker and more protective materials to provide adequate shielding. A kVp of 150 is on the higher end of the scale and will therefore require a thicker apron compared to lower kVp settings. This ensures that healthcare professionals and patients are sufficiently protected from the radiation exposure that can occur during imaging procedures.

In contrast, lower kVp settings like 25 kVp or 50 kVp produce less penetrating radiation, requiring less shielding material. Even at 100 kVp, while the penetration is greater than at lower values, it is still not as significant as at 150 kVp, hence requiring a less thick apron for adequate protection.