CT evaluation to be performed in accordance with recommendations set forth by the J.C.A.H.O. requirement DR.2.2.10.1 regarding annual monitoring of Diagnostic X-Ray Equipment performance, published in “An Analysis of the J.C.A.H.O. Standards…etc, by the A.C.R., the A.A.P.M. and the A.C.M.P. which states:  “For a C.T. Scanner, high and low contrast resolution, noise and patient dose should be included.”  Other parameters tested :

1. Value of contrast scale
2. CT scale factor
3. Values of both body & head technique
4. Spatial uniformity
5. Calculations for percent noise for both head & abdomen
6. Low/High contrast resolution
7. Calculation of slice thickness

ACR CT EVALUATION

The CT ACR Accreditation Program involves the acquisition of clinical and phantom images, dose measurements, and the submission of scanning protocols.  A medical physicist must evaluate the CT unit at least annually.  This evaluation will include:

1. Alignment light accuracy
2. Alignment of Table to gantry
3. Table/gantry tilt
4. Slice localization from scanned projection radiograph (localization image)
5. Table incrementation accuracy
6. Slice thickness
7. Image quality
   1. High-contrast (spatial) resolution
   2. Low-contract resolution
   3. Image uniformity
   4. Noise
   5. Artifact evaluation
8. CT number accuracy and linearity
9. Display devices
   1. Video display
   2. Hard-copy display
10. Dosimetry
    1. Computed tomography dosimetry index (CTDI)
    2. Patient radiation dose for representative examinations
11. Safety evaluation
    1. Visual inspection
    2. Audible/visual signals
    3. Posting requirements
    4. Scatter radiation measurements
12. Other tests as required by state or local regulations

 For pricing and additional information please e-mail us at: info@ucimedphys.com