- Mimics the human skull and brain anatomy for CT imaging
- Investigate low contrast, beam hardening, partial volume artefacts etc.
The phantom is based on a brain-equivalent plastic with a constant CT-number for different kV settings surrounded by bone structures imitating the X-ray absorption of the human skull.
The inner part of the phantom comprises two different sections.
One section includes the base of the skull with uniform brain tissue and bony structures equivalent to the temporal bones. This section is suitable to demonstrate and evaluate the image quality in the base of the skull, especially affected by beam hardening effects, partial volume effects and artefacts caused by scanner instabilities, e.g., anode wobble.
The second section is designed to test the low-contrast capabilities of the imaging system. Several low-contrast structures (grey matter) within the uniform brain tissue (white matter) simulate typical cortex structures and central low-contrast structures of the brain.
