Table 1.
Numbers of CT examinations by sex and type of examination in patients under 22 years of age in Great Britain, 1993–2002.
| Categories | All | Males | Females |
|---|---|---|---|
| N (%) | N (%) | N (%) | |
| Head and neck | 218,091 (60) | 125,295 (60) | 92,424 (60) |
| Abdomen and pelvis | 42,226 (12) | 24,020 (12) | 18,169 (12) |
| Chest | 31,074 (9) | 17,853 (9) | 13,200 (9) |
| Unknown | 24,039 (7) | 13,668 (7) | 10,367 (7) |
| Extremities | 17,853 (5) | 10,559 (5) | 7,285 (4) |
| Spine | 10,513 (3) | 6,493 (3) | 3,999 (3) |
| Miscellaneous | 17,763 (5) | 9,396 (4) | 8,357 (5) |
|
| |||
| Total | 361,559 (100) | 207,284 (100) | 153,801 (100) |
Sex not known for 474 examinations (372 “head,” 37 “abdomen,” 21 each for “chest” and “spine,” 9 “extremities,” 4 “unknown,” and 10 “miscellaneous”).