Image format

Arquivos de amostra NII

NIfTI (.nii) files are common in neuroimaging and scientific imaging workflows, storing volumetric image data with spatial metadata in a compact binary container. Use sample .nii files to validate volume readers, header parsing, coordinate transforms, and cross-tool compatibility in analysis and medical-imaging pipelines.

3 arquivos All to 50KB SHA256 verified Manifest included

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Quick facts

CategoriaImage

Total Files3

Extension.nii

MIMEapplication/octet-stream

ManifestJSON

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Files first

NII Sample Files — Download

Starter file

nii_anatomical_volume_sample.nii · 66.4 KB

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Anatomical NIfTI Volume

Real anatomical NIfTI fixture for volume loading and header validation.

nii_anatomical_volume_sample.nii · 66.4 KB

Download Fixture

Functional NIfTI Volume

Real functional NIfTI fixture for voxel-volume and analysis-tool compatibility.

nii_functional_volume_sample.nii · 42.2 KB

Download Fixture

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All (3) 50KB (3)

50KB NII

Nome do arquivo	Tamanho	MIME	Baixar
nii_anatomical_volume_sample.nii .nii Realistic Starter `SHA256 1c089f37b659...`	66.4 KB	`application/octet-stream`	Baixar
nii_functional_volume_sample.nii .nii Realistic `SHA256 0591d9f8c21f...`	42.2 KB	`application/octet-stream`	Baixar
nii_resampled_volume_sample.nii .nii Realistic `SHA256 1840a0022a31...`	4.5 KB	`application/octet-stream`	Baixar

Use cases

NII Testing Workflows

Volume Preview and Structure Review

NII for Volume Preview and Structure Review

Abrir pagina NII

Functional and Resampled Volume Validation

NII for Functional and Resampled Volume Validation

Abrir pagina NII

Compare and decide

NII Format Comparisons

More image formats: PNG TIFF BMP GIF SVG JPEG

FAQ and reference

NII File FAQ

Checksum Verification

Use checksums to confirm file integrity after download.

shasum -a 256 your_file_name_here
# Compare output with SHA256 values listed above.

Where is the machine-readable manifest?

Use the manifest when you need stable names, SHA256 values, and URLs for automation.

Manifest

Validation Methodology

Validate MIME sniffing against extension and file signatures.
Test transparency, color profile, and resize pipelines.
Benchmark decode speed and memory use for larger dimensions.

Matriz de fixtures

Use the curated NII matrix to choose the right clean, edge-case, and broken fixtures for this format.

Abrir matriz

Pacotes de fluxo de trabalho

Medical Imaging Fixture Pack Specialized Imaging Compatibility Pack

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