TABLE 4

Proposed CT Protocol for SPECT/CT in Children

Relationship between patient average diameter^* and weight (mm→kg)	Patient weight (kg)	Voltage (kV)	Current (mA)
110→4	<10	120	1
150→11	10–19	120	2
200→20	20–29	140	1.5
250→35^†	30–40	140	2
300→70	>40	140	2.5

↵* Arithmetic mean of diameters of thorax and abdomen.
↵† For adolescents, diameter→weight relation was extrapolated because of lack of data in handbook (6).