Adjustable compensating filters for pediatric 72-inch spine radiography.

The difficulty in producing a uniformly penetrated radiograph of the upright spine at 72 inches is alleviated by the use of compensating filters. These filters are finely machined, adjustable and easy to position. High quality, uniform density radiographs are now easily obtained on patients of all sizes. Most importantly, patient dose has been reduced by a factor of 2.4 to 6.9, a feature that makes their use mandatory in pediatric spine radiography.