Table 1.
MQSA inspection results for selected technical parameters: January to December, 1995.
| Unless otherwise indicated, tabulated values are: N / Mean / SD | Hospitals | Private Practice | Breast Clinics | Other facilities | ALL |
| Mean Glandular Dosea (mGy) | 5715/1.50/0.42 | 4959/1.51/0.42 | 730/1.47/0.39 | 293/1.58/0.44 | 11697/1.51/0.42 |
| kVp | 5732/25.9/1.2 | 4977/26.0/1.4 | 734/25.9/1.0 | 293/25.9/1.1 | 11736/26.0/1.2 |
| HVL (mm Al) | 5732/0.32/0.03 | 4977/0.33/0.05 | 734/0.33/0.02 | 293/0.32/0.02 | 11736/0.33/0.04 |
| Phantom Image Background OD | 5732/1.43/0.22 | 4977/1.42/0.23 | 734/1.44/0.21 | 293/1.41/0.23 | 11736/1.42/0.23 |
| Fibersb | 5729/4.6/0.6 | 4923/4.5/0.6 | 731/4.6/0.6 | 293/4.5/0.7 | 11676/4.5/0.6 |
| Specksb | 5729/3.7/0.5 | 4923/3.7/0.5 | 731/3.7/0.5 | 293/3.7/0.6 | 11676/3.7/0.5 |
| Massesb | 5729/3.6/0.6 | 4923/3.6/0.6 | 731/3.7/0.5 | 293/3.6/0.6 | 11676/3.6/0.6 |
| Total Net Scorec | 5705/11.5/1.1 | 4955/11.4/1.1 | 732/11.6/1.0 | 290/11.4/1.1 | 11682/11.5/1.1 |
| Film Processing: % < 80d | 4.5 (80/1777) | 3.4 (60/1742) | 1.8 (2/109) | 8.0 (7/88) | 4.0 (149/3717) |
| Darkroom Fog: % > 0.05 ODe | 10.5 (352/3365) | 12.1 (381/3156) | 8.8 (29/328) | 8.8 (16/181) | 11.1 (778/7030) |
| % Phantom Images with artifacts | 62.2 (3565/5729) | 57.1 (2812/4923) | 56.9 (416/731) | 63.5 (186/293) | 59.8 (6979/11676) |
a
Dose was calculated from data acquired by the MQSA inspector.
b
Object score is reported without artifact subtraction.
c
Score includes artifact subtraction.
d
Percentage of standard-cycle film processors with a speed less than 80, as determined by the STEP method.
e
Percentage of facilities found to have darkroom fog greater than 0.05 net optical density.