FIGURE 2.

Typical cases of coronal slices showing relatively good performance based on the Spearman r _s values between SPECT V and CTVIs of both models. The top row shows the SPECT V on the left, followed by the ventilation predictions of the CTVI_{MCD U‐Net} and the scatter plot between SPECT V and CTVI_{MCD U‐Net} within whole‐lung volume. The bottom row shows the masked CT on the left, followed by the ventilation predictions of the CTVI_U‐Net and the scatter plot between SPECT V and CTVI_U‐Net within whole‐lung volume. Orange arrows indicate the defect regions of SPECT V. The ventilation values for viewing were normalized to give the 99th percentile value of 1 and the 1st percentile value of 0. CT, computed tomography; CTVI, computed tomography ventilation imaging; MCD, Monte Carlo dropout; SPECT V, single‐photon emission computed tomography ventilation