The CT X-ray system must:

1. (1) Meet the requirements of 21 C.F.R. Sec. 1020.33 (last amended June 10, 2005) at the time of installation and while the CT X-ray system is registered with the department under chapter 246-224 WAC; and

2. (2) Be equipped:

   1. (a) With a visible signal that indicates when the X-ray exposure is occurring;
   2. (b) So that the operator can immediately terminate an X-ray exposure of greater than one-half second duration at any time during the X-ray exposure;

   3. (c) So that the parameters used during a CT procedure are:

      1. (i) Displayed prior to beginning a scan; and
      2. (ii) Visible by the operator from any location scanning can be initiated.
   4. (d) So that radiation leakage from the tube port does not exceed limits established in WAC 246-225-040 (3) and (4) when data are not being collected for image production;
   5. (e) So that the accuracy of the laser or optical positioning system is within five millimeters maximum deviation on the axial position (z-axis);
   6. (f) With an X-ray production indicator of at least one-half second at or near the gantry that is visible from any point outside the gantry opening;
   7. (g) So that premature termination of the X-ray exposure by the operator requires resetting of the parameters prior to initiating another scan.

[Statutory Authority: RCW 70.98.050 and 70.98.080. WSR 16-23-030, § 246-226-020, filed 11/8/16, effective 1/1/17.]