Display
(0028,1052)
Rescale Intercept
Keyword: RescaleIntercept
The value b in the linear transformation from stored pixel values to output units: Output = m × SV + b.
Tag Attributes
- Tag ID
- (0028,1052)
- Compact
- 00281052
- Keyword
- RescaleIntercept
- VR
- DS — Decimal String
- VM
- 1
- Retired
- No
Module(s)
Modality LUT Module
Engineering Notes
For CT, Rescale Intercept is −1024 to convert stored integers to Hounsfield Units. Incorrect value shifts all HU values, causing systematic measurement errors.
Troubleshooting
CT Hounsfield Unit values systematically off by a constant (e.g., water reads as +24 instead of 0) — check Rescale Intercept and Slope. Should be -1024 and 1 respectively for standard CT.
Common Values
| Value | Meaning |
|---|---|
| -1024 | CT — converts to Hounsfield Units |
| 0 | No offset (most non-CT modalities) |