Table 6. .
Median (x̃) and IQR of FOV area, tube current–exposure time product (P It), and air P KA in all institutions included in patient dose study, grouped in patient age categories, sorted by adult P KA median
| Institution | Age group | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Adults | Children | |||||||||||
| FOV (cm²) |
P
It
(mAs) |
P
KA
(mGy cm²) |
FOV (cm²) |
P
It
(mAs) |
P
KA
(mGy cm²) |
|||||||
| x̃ | IQR | x̃ | IQR | x̃ | IQR | x̃ | IQR | x̃ | IQR | x̃ | IQR | |
| L | 45 | (39) | 32 | (17) | 236 | (295) | 55 | 46 | 20 | 10 | 146 | 165 |
| G | 88 | (0) | 17 | (9) | 304 | (186) | . | . | . | . | . | . |
| N | 36 | (39) | 59 | (5) | 390 | (97) | . | . | . | . | . | . |
| K | 64 | (36) | 85 | (14) | 402 | (174) | . | . | . | . | . | . |
| E | . | . | 110 | (256) | 435 | (305) | . | . | 108 | (256) | 218 | (522) |
| M | 36 | (39) | 68 | (11) | 468 | (110) | . | . | . | . | . | . |
| F | 48 | (0) | 79 | (21) | 578 | (156) | 24 | (0) | 38 | (0) | 279 | (0) |
| A | 64 | (0) | 85 | (14) | 693 | (113) | . | . | . | . | . | . |
| C | . | . | 76 | (21) | 718 | (194) | . | . | . | . | . | . |
| D | . | . | 122 | (0) | 820 | (273) | . | . | 109 | (0) | 738 | (0) |
| J | 40 | (87) | 123 | (23) | 1057 | (1760) | . | . | . | . | . | . |
| B | 231 | (99) | 24 | (6) | 1526 | (619) | 100 | (0) | 24 | (21) | 796 | (863) |
| I | 76 | (39) | 106 | (11) | 2327 | (750) | . | . | . | . | . | . |
| H | 81 | (0) | 140 | (42) | 2567 | (937) | . | . | . | . | . | . |
| Total | 75 | (76) | 71 | (83) | 820 | (1058) | 82 | (75) | 35 | (21) | 653 | (578) |
| Q₃ᵢ | 1000 | 740 | ||||||||||
FOV, field of view; IQR, interquartile range; P KA, kerma–area product.
Thelast row includes the value of third quartile of medians from each institution (Q₃ᵢ). Names ofinstitutions are anonymized.