Mich. Admin. Code R. 333.5719

Current through Vol. 24-24, January 15, 2025

Section R. 333.5719 - Initial and annual medical physicist performance evaluations

Rule 719.

(1) A medical physicist shall complete an initial performance evaluation of the CT scanner before use on human patients and annually thereafter.

(2) A calibrated dosimetry system shall be used to measure the radiation output of a CT scanner. Calibration of the dosimetry system shall be within the preceding 24 months and shall be traceable to a national standard as specified in R 333.5012(1).

(3) A performance evaluation should include the following:

(a) Alignment light accuracy.

(b) Alignment of table to gantry.

(c) Table and gantry tilt.

(d) Slice localization from scanned projection radiograph.

(e) Table increment accuracy.

(f) Slice thickness.

(g) Image quality, including the following:

(i) High-contrast resolution.

(ii) Low-contrast resolution.

(iii) Image uniformity.

(iv) Noise.

(v) Artifact evaluation.

(h) CT number accuracy and linearity.

(i) Dosimetry, including the following:

(i) Dose indicator such as computed tomography dose index (CTDI).

(ii) Patient radiation dose for representative examinations.

(j) Safety evaluation, including the following:

(i) Visual inspection.

(ii) Audible and visual signals.

(iii) Posting requirements.

(iv) Scattered radiation measurements.

(k) Review of the ongoing quality control program, including test results and corrective action.

(4) The medical physicist shall prepare a report that includes all of the following:

(a) A summary of the performance evaluation required under subrule (1) of this rule.

(b) Recommendations for necessary improvements.

(c) Type of dosimetry system used, including the date of the last calibration.

(5) The report required under subrule (4) of this rule shall be provided to the CT facility within 30 days after completion of the evaluation.

Mich. Admin. Code R. 333.5719

2016 MR 10, Eff. 5/25/2016