As the grid ratio increases, what happens to the technique needed?

When the grid ratio increases, the technique needed for exposure generally increases as well. This is due to the grid's effectiveness at reducing scatter radiation. A higher grid ratio means that the grid has a greater density of lead strips compared to interspace material, leading to increased absorption of scattered radiation. In order to achieve the same level of image quality and contrast, the radiographer must increase the radiation exposure to compensate for the additional attenuation caused by the grid.

Consequently, when using a higher grid ratio, it is necessary to increase the mA (milliamperes), time, or kVp (kilovolt peak) settings to maintain adequate image density and quality. In practical terms, this means that the exposure technique must be adjusted upward to counterbalance the increased absorption of the useful beam by the grid.