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Add example dataset for MRI chunk entity
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‎mri_chunk/README.md

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Example dataset with empty images containing magnetic resonance imaging (MRI) data to illustrate BIDS chunk entity.
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The dataset contains a T2w image from a single subject. T2w image has two chunks -- brain and spinal cord.

‎mri_chunk/dataset_description.json

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{
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"Name": "mri_chunk",
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"Authors": [
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"Jan Valosek",
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"Julien Cohen-Adad"
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],
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"BIDSVersion": "BIDS 1.8.0",
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"DatasetType": "raw"
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}

‎mri_chunk/participants.json

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{
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"participant_id": {
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"Description": "Unique Participant ID",
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"LongName": "Participant ID"
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}
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}

‎mri_chunk/participants.tsv

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participant_id
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sub-001

‎mri_chunk/sub-001/anat/sub-001_chunk-1_T1w.json

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{
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"Modality": "MR",
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"MagneticFieldStrength": 3,
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"ImagingFrequency": 123.197,
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"Manufacturer": "Siemens",
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"ManufacturersModelName": "Verio",
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"PatientPosition": "HFS",
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"ProcedureStepDescription": "TEST_VC^SPINE",
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"SoftwareVersions": "syngo MR B17",
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"MRAcquisitionType": "3D",
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"SeriesDescription": "SC_tse_spc_1mm_3palliers_fov256_nopat",
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"ProtocolName": "SC_tse_spc_1mm_3palliers_fov256_nopat_1",
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"ScanningSequence": "SE",
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"SequenceVariant": "SK\\SP\\OSP",
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"ScanOptions": "PFP",
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"SequenceName": "*spcR3d1_103",
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"ImageType": ["ORIGINAL", "PRIMARY", "M", "NORM", "DIS2D"],
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"NonlinearGradientCorrection": true,
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"SeriesNumber": 8,
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"AcquisitionTime": "10:33:32.162500",
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"AcquisitionNumber": 1,
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"SliceThickness": 1,
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"SAR": 0.269146,
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"NumberOfAverages": 2,
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"EchoTime": 0.124,
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"RepetitionTime": 1.5,
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"SpoilingState": true,
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"FlipAngle": 110,
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"AveragesDouble": 1.4,
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"PartialFourier": 1,
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"BaseResolution": 256,
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"ShimSetting": [
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-5956,
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12936,
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-12143,
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-17,
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-26,
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51,
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158,
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-40 ],
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"TxRefAmp": 491.928,
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"PhaseResolution": 1.0098,
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"PhaseOversampling": 0.197917,
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"ReceiveCoilName": "NeckMatrix",
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"CoilString": "C:HEP;NE1,2",
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"PulseSequenceDetails": "%SiemensSeq%\\tse_vfl",
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"CoilCombinationMethod": "Adaptive Combine",
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"MatrixCoilMode": "SENSE",
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"PercentPhaseFOV": 100,
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"PercentSampling": 100.98,
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"EchoTrainLength": 103,
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"PhaseEncodingSteps": 237,
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"AcquisitionMatrixPE": 259,
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"ReconMatrixPE": 256,
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"PixelBandwidth": 610,
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"DwellTime": 3.2e-06,
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"PhaseEncodingDirection": "j-",
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"ImageOrientationPatientDICOM": [
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0,
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1,
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-2.05103e-10,
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0,
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-2.05103e-10,
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-1 ],
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"ImageOrientationText": "Sag",
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"InPlanePhaseEncodingDirectionDICOM": "COL",
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"ConversionSoftware": "dcm2niix",
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"ConversionSoftwareVersion": "v1.0.20220720"
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}

‎mri_chunk/sub-001/anat/sub-001_chunk-1_T1w.nii.gz

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‎mri_chunk/sub-001/anat/sub-001_chunk-2_T1w.json

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{
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"Modality": "MR",
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"MagneticFieldStrength": 3,
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"ImagingFrequency": 123.197,
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"Manufacturer": "Siemens",
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"ManufacturersModelName": "Verio",
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"PatientPosition": "HFS",
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"ProcedureStepDescription": "TEST_VC^SPINE",
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"SoftwareVersions": "syngo MR B17",
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"MRAcquisitionType": "3D",
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"SeriesDescription": "SC_tse_spc_1mm_3palliers_fov256_nopat",
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"ProtocolName": "SC_tse_spc_1mm_3palliers_fov256_nopat_2",
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"ScanningSequence": "SE",
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"SequenceVariant": "SK\\SP\\OSP",
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"ScanOptions": "PFP",
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"SequenceName": "*spcR3d1_103",
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"ImageType": ["ORIGINAL", "PRIMARY", "M", "NORM", "DIS2D"],
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"NonlinearGradientCorrection": true,
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"SeriesNumber": 9,
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"AcquisitionTime": "10:40:6.177500",
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"AcquisitionNumber": 1,
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"SliceThickness": 1,
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"SAR": 0.978482,
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"NumberOfAverages": 2,
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"EchoTime": 0.124,
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"RepetitionTime": 1.5,
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"SpoilingState": true,
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"FlipAngle": 110,
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"AveragesDouble": 1.4,
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"PartialFourier": 1,
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"BaseResolution": 256,
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"ShimSetting": [
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-5956,
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12936,
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-12143,
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-17,
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-26,
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51,
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158,
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-40 ],
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"TxRefAmp": 491.928,
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"PhaseResolution": 1.0098,
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"PhaseOversampling": 0.197917,
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"ReceiveCoilName": "NeckMatrix",
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"CoilString": "C:NE1,2;SP1,2",
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"PulseSequenceDetails": "%SiemensSeq%\\tse_vfl",
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"CoilCombinationMethod": "Adaptive Combine",
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"MatrixCoilMode": "SENSE",
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"PercentPhaseFOV": 100,
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"PercentSampling": 100.98,
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"EchoTrainLength": 103,
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"PhaseEncodingSteps": 237,
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"AcquisitionMatrixPE": 259,
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"ReconMatrixPE": 256,
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"PixelBandwidth": 610,
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"DwellTime": 3.2e-06,
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"PhaseEncodingDirection": "j-",
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"ImageOrientationPatientDICOM": [
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0,
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1,
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-2.05103e-10,
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0,
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-2.05103e-10,
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-1 ],
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"ImageOrientationText": "Sag",
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"InPlanePhaseEncodingDirectionDICOM": "COL",
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"ConversionSoftware": "dcm2niix",
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"ConversionSoftwareVersion": "v1.0.20220720"
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}

‎mri_chunk/sub-001/anat/sub-001_chunk-2_T1w.nii.gz

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