Due to the increasing number of cone-beam CT (CBCT) devices on the market, reliable estimates of patient doses for these
imaging modality is desired. Cone-beam CT devices differ from conventional CT not only by a larger collimation but also
by different recording modes. In this work, it has been investigated whether reliable patient doses can be obtained for CBCT
devices in partial-fan mode using pre-computed slices. As an exemplary case, chest CBCT scans for the ICRP reference
adult models has been examined. By normalizing organ doses to CTDI100w , the resulting dose conversion coefficients
for CBCT could be well reproduced by precomputed slices, with a relative difference in the effective dose conversion
coefficients of less than 10%.