When imaging with a fiberglass cast, what is the required adjustment for KVP and MAS?

When imaging through a fiberglass cast, it is typically understood that there is minimal impact on the quality of the imaging and thus no alteration in exposure factors like KVP (kilovoltage peak) and MAS (milliampere-seconds) is necessary. Fiberglass casts are comparatively thin and have a radiation attenuation similar to that of soft tissue. Consequently, the X-ray penetration required is similar to that for imaging soft tissue, so adjustments are generally not needed.

Choosing to make no change to KVP or MAS helps in maintaining the original image quality while ensuring patient safety, as unnecessary adjustments could lead to overexposure or underexposure, impacting diagnostic accuracy. Therefore, when imaging with a fiberglass cast, the best practice is indeed to defer from making any changes to KVP or MAS.