Interleaved data-acquisition scheme. In this example, a series of four data sets a–d with rotation ranges between 0.04° and 0.32°, exposure times from 0.1 to 0.8 s and a total rotation of 48° covered by each data set is collected at constant flux and dose rate. A first wedge covering 0–4.8° for each of the four data sets is collected, then a second wedge from 4.8° to 9.6° and so on until all ten wedges for the four data sets have been collected. The data sets are then assembled from their wedges, which are discontinuous in time and dose but continuous in rotation. All data sets of the series received a similar dose.