1 Definition 2 Functional Requirements 3 Syntax 4 Semantics

1 Definition

Medical Images Qualifier is a set of Data providing additional information on Medical Images for for potential use by a machine.

Medical Images are specified by MPAI-AIH V1.0.

2 Functional Requirements

Medical Images Qualifier must allow the expression of the following Elements:

  1. Sub-Type
  2. Format
  3. Attributes

Users needing support of other entries in MPAI-TFA should make a documented request to the MPAI Secretariat to consider addition of such entries.

3 Syntax

https://schemas.mpai.community/TFA/V1.3/data/MedicalImagesQualifier.json

4 Semantics

  1. Sub-Types

    1. Scanning Technology
      1. Computerised Tomography (CT)
      2. Magnetic Resonance Imaging (MRI)
      3. Positron Emission Tomography (PET)
      4. Single Photon Emission Computed Tomography (SPECT)
      5. X-Rays
    2. Channels
      1. Definition: The number of values provided for each pixel of an image/
      2. Alpha-channel
        1. Definition: a number that represents the degree of transparency of a colour of a Visual instance.
        2. Number: between 0 and 1.

  2. Formats

    1. Pixels
      1. Integer
        1. Little Endian
        2. Big Endian
      2. Real
      3. Complex
    2. Static
      1. 2D
        1. Analyze
        2. DICOM (Digital Imaging and Communication in Medicine)
        3. Minc
        4. Nifti (Neuroimaging Informatics Technology Initiative)
      2. Surface-based
        1. Gifti
          1. Definition: Geometry Informatics Technology Initiative
          2. Data Types
            1. Surface geometry files (.surf.gii)
            2. metric files (.func.gii, .shape.gii)
            3. label files (.label.gii)
        2. Cifti
          1. Definition: Connectivity format of the Geometry Informatics Technology Initiative
          2. Data Types:
            • timeseries (dtseries.nii)
            • parcellation (dlabel.nii)
            • scalars (dscalar.nii)
            • connectivity (dconn.nii)
      3.  3D
        1. Nifti
          1. Definition: Neuroimaging Informatics Technology Initiative
          2. Compression
            1. Raw Data (nii)
            2. Compressed data (nii.gz)
        2. Dicom
          1. Definition: Digital Imaging and Communications in Medicine
          2. Compression
            1. Raw data (no extension of dcm)
        3. mgh
          1. Definition: Massachusetts General Hospital
          2. Compression
            1. Raw data (mgh)
            2. Compressed mgz (iwith ZLib)
        4. minc
          1. Definition: Medical Image NetCDF
          2. Sub-formats:
            1. MINC1
            2. MINC2
    3.  Dynamic
      1. 2D
      2. 3D

  2. Attributes

    1. Colour Map
    2. Metadata