# Header file of a .hdr/.img pair in NIfTI format, used extensively in biomedical imaging. — file signature 6E 69 31 00 at offset 344

For Header file of a .hdr/.img pair in NIfTI format, used extensively in biomedical imaging., hex signature is 6E 69 31 00; offset is 344; extension is hdr, verified against its source on 2026-09-22.

- **Hex signature:** 6E 69 31 00 _(verified: appears in the quote below)_
- **Offset:** 344 _(verified: appears in the quote below)_
- **Extension:** hdr _(verified: appears in the quote below)_
- **Format:** Header file of a .hdr/.img pair in NIfTI format, used extensively in biomedical imaging. _(verified: appears in the quote below)_

## What the source says

> 6E 69 31 00 | ni1 | 344 | hdr | Header file of a .hdr/.img pair in NIfTI format, used extensively in biomedical imaging. |

## Source

- https://en.wikipedia.org/wiki/List_of_file_signatures

Last verified: 2026-09-22. Review by: 2027-09-22.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).