Kilovoltage Peak Annual Quality Control Test

Citation:

900.12(e)(5)(ii)(A)(1)(2)(3),(B): Kilovoltage peak (kVp) accuracy and reproducibility.

(A) The kVp shall be accurate within ±5 percent of the indicated or selected kVp at:

(1) The lowest clinical kVp that can be measured by a kVp test device;

(2) The most commonly used clinical kVp;

(3) The highest available clinical kVp, and

(B)  At the most commonly used clinical settings of kVp, the coefficient of variation of reproducibility of the kVp shall be equal to or less than 0.02.

Questions:

1. Does this regulation require that kVp be within 5% agreement with an absolute standard or within 5% agreement with the field measuring instrument?