Technical factors that may affect volume measurement
| Effects on volumetry | |
| Section thickness | Volume overestimation with thick sections [40, 68, 69, 86–89] |
| Overlapping reconstruction | Volume overestimation with non-overlapping sections [90, 91] |
| Pitch | Low accuracy with high pitch mode [92] |
| Reconstruction algorithms | Easier nodule sampling with high spatial frequency algorithms [86, 89, 91, 93] Volume overestimation with high spatial frequency algorithms [90, 94, 95] |
| Intravenous contrast medium | Volume overestimation [95–97] |
| Scanner type | Differences in volume estimation [50, 86, 98] Higher accuracy with helical CT scanner [98] |
| Low radiation dose | Low accuracy [76, 99, 100] |
| Iterative reconstruction | Better performance [101–112] |
| Manual versus semi/automated method | Reduced observer variability with automated system [113, 114] Manual interaction reduces bias due to the software performance [55, 115] |
| Software and algorithms package | Differences in volume estimation [57, 67, 116–118] |
CT: computed tomography.