Table 5.
Study data, national data and international data
| Study dataa | National dataa(8) | European datab (10, 20) | USA dataa (11) | Worldwide datac (20) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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| CTDIvol mGy | DLP mGy.cm | ED mSv | CTDIvol mGy | DLP mGy.cm | ED mSv | CTDIvol mGy | DLP mGy.cm | ED mSv | CTDIvol mGy | DLP mGy.cm | ED mSv | Mean ED mSv | |
| Head | 53 | 988 | 2.07 | 66.4 | 810 | 1.7 | 60 | 1000d | 1.9 | 62 | 1120 | 3 | 1.7 |
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| Neck | 13.1 | 299 | 1.76 | N/A | N/A | N/A | N/A | 500 | 2.5 | 22 | 650 | 7 | 3 |
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| Chest | 8.3 | 314 | 4.4 | 11.6 | 289 | 4.1 | 10 | 400 | 6.6 | 17 | 610 | 13 | 7 |
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| Abdomen | 8.6 | 457 | 6.85 | 13.3 | 204 | 3.1 | 25 | 800 | 11.3 | 17 | 860 | 16 | 6.8 |
CTDIvol, volumetric computed tomography dose index; DLP, dose length product; ED, effective dose; N/A, not applicable.
Data of study are median values. Data of national and United States of America (USA) are 3rd quartile values.
CTDIvol and DLP values in Dose Data of Med 2 (DDM2) study are the most common values in that report, representing the status of established diagnostic reference levels in Europe. Effective dose of DDM2 was taken given by Vilar Palop et al. (20).
Since data of the study were expressed with median values, these values cannot be compared with mean values of worldwide data.
All p values of the comparisons of the study data with national, European and USA data were p < 0.001, except for head DLP value of European data (p = 0.590).