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. 2011 Jun;259(3):862–874. doi: 10.1148/radiol.11101900

Table 1.

CT Protocols

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*

Protocols A, B, and C were used to examine the effect of bow tie filter choice, protocols A and D to examine beam collimation, protocols A and E to examine helical pitch, and protocols A, F, G, and H to examine tube potential.

†

CTDIvol = volume-weighted CT dose index. The scan field of view used in each CT protocol determines the corresponding CTDI phantom size: 32-cm-diameter phantom for protocols B and C and 16-cm-diameter phantom for other protocols.

‡

See Equation (1).