Dose
(0018,9345)
CTDIvol
Keyword: CTDIvol
The volume CT Dose Index (CTDIvol) in mGy for the acquisition protocol used in the scan.
Tag Attributes
- Tag ID
- (0018,9345)
- Compact
- 00189345
- Keyword
- CTDIvol
- VR
- FD — Floating Point Double
- VM
- 1
- Retired
- No
Module(s)
CT Dose Module
Engineering Notes
The primary CT radiation dose metric. Mandatory for ACR Dose Index Registry and most national dose audit programmes. Must be present in every CT series.
Troubleshooting
Missing CTDIvol is the most common reason CT dose structured reports fail validation. Ensure the scanner is calibrated and CTDIvol is computed and stored for every acquisition.