Table 2: Numbers of CT examinations by age and type of examination in patients under 22 years of age in Great Britain, 1993–2002.

Age at time of examination (years)
Categories<11–45–910–1415–1920-21
(%) (%) (%) (%) (%) (%)

Head & neck15,921 (73)40,056 (61)34,117 (61)41,539 (59)53,191 (59)33,128 (57)
Abdomen & pelvis1,156 (5)6,260 (10)5,080 (9)6,979 (10)12,491 (14)10,230 (18)
Chest1,739 (8)5,430 (8)5,052 (9)5,823 (8)8,019 (9)4,995 (9)
Unknown1,773 (9)8,429 (13)4,916 (9)4,071 (6)3,292 (4)1,551 (3)
Extremity471 (2)1,679 (3)2,352 (4)5,646 (8)5,212 (6)2,485 (4)
Miscellaneous637 (3)2,925 (5)3,253 (6)4,236 (6)3,880 (4)2,815 (5)
Spine120 (1)758 (1)1,159 (2)2,047 (3)3,931 (4)2,494 (4)

Total21,817 (100)65,537 (100)55,929 (100)70,341 (100)90,016 (100)57,698 (100)

Age not known for 221 examinations (139 “Head”, 34 “Abdomen”, 20 “Chest”, 11 “Miscellaneous”, 8 “Extremities”, 5 “Unknown” and 4 “Spine”).