Table 3.
Recommended dose report metrics for fluoroscopy (2D) and CBCT/tomosynthesis image acquisition (3D) in interventional pulmonology studies
| Metric | Reporting unit | Relevant for modality |
|---|---|---|
| General information | ||
| BMI | kg/m2 | FL + CBCT + tomosynthesis |
| Fluoroscopy | ||
| Time | min:s | FL + CBCT + tomosynthesis1 |
| DAP | Gy∙cm2 | FL + CBCT + tomosynthesis1 |
| CAK | mGy | FL + CBCT + tomosynthesis1 |
| CBCT/tomosynthesis | ||
| Number of scans | # | CBCT + tomosynthesis1 |
| Average scan DAP | Gy∙cm2 | CBCT + tomosynthesis1 |
| Total scan DAP | Gy∙cm2 | CBCT + tomosynthesis1 |
| Total scan CAK | mGy | CBCT + tomosynthesis1 |
| Procedure | ||
| Procedural total time (scope in – scope out) | min:s | FL + CBCT + tomosynthesis |
| DAP | Gy∙cm2 | FL + CBCT + tomosynthesis |
| CAK | mGy | FL + CBCT + tomosynthesis |
It is recommended to make a distinction in reporting between fluoroscopy and CBCT/tomosynthesis imaging. However, not all systems will have a 2D and 3D distinction for DAP and CAK, only a total cumulative report per procedure. It is recommended to use the mean or median along with standard deviation or 95% confidence interval based on the distribution of data (non-normal vs. normal).
BMI, body mass index; CAK, cumulative air kerma; CBCT, cone-beam CT; CT, computed tomography; DAP, dose area product; FL, fluoroscopy.
1If available: tomosynthesis fluoroscopy dose for fluoroscopy or 3D imaging separately.