> For the complete documentation index, see [llms.txt](https://documentation.qure.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.qure.ai/api/platform-api/get-started/qct.md).

# qCT

| Criteria                  | Acceptance Criteria                  | Exclusion Criteria                                                                                                                                                    |
| ------------------------- | ------------------------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Slice Thickness           | < 5 mm                               | -                                                                                                                                                                     |
| Scans                     | -                                    | <ul><li>Post-operative defects,</li><li>Metals artifacts, </li><li>Excessive motion artifacts, </li><li>Improperly ordered slices, </li><li>Missing slices.</li></ul> |
| Processing Image          | Series Level                         | -                                                                                                                                                                     |
| Patient's Age             | > 18 Years                           | < 18 Years                                                                                                                                                            |
| Number of Slices          | > 100                                | -                                                                                                                                                                     |
| Modality                  | CT                                   | -                                                                                                                                                                     |
| Minimum Z-Axis Coverage   | 200 mm                               | -                                                                                                                                                                     |
| Maximum Z-Axis Coverage   | 600 mm (Configurable)                | -                                                                                                                                                                     |
| Image Patient Orientation | Axial                                | -                                                                                                                                                                     |
| File                      | Valid DICOM format                   | -                                                                                                                                                                     |
| DICOM                     | Valid Lung NCCTs                     | -                                                                                                                                                                     |
| Convolution Kernel        | Smooth Kernel (Not bone/Sharp, etc.) | -                                                                                                                                                                     |
| Body Part Examined        | Chest/Lung                           | -                                                                                                                                                                     |