National Database for Autism Research
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NDAR neuroimaging definitions

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ElementName DataType Size Required Condition ElementDescription ValueRange Notes
subjectkey GUID Required The NDAR Global Unique Identifier (GUID) for subjects which identifies a subject in NDAR NDAR*
src_subject_id String 20 Required The site or study's subject identification
interview_date Date Required Date on which the interview/genetic test/sampling/imaging was completed Required field
interview_age Integer Required Age in months at the time of the interview/test/sampling/imaging. 0 :: 1200 Age is rounded to chronological month If the research participant is 15 days old at time of interview the appropriate value would be 0 months if the participant is 16 days old the value would be 1 month
gender String 50 Required Gender M; F
comments_misc String 255 Optional Miscellaneous comments on study, interview, methodology relevant to this form data
image_file File Required File name of image
image_thumbnail_file Thumbnail Recommended Thumbnail
image_description String 512 Required Image description, i.e. DTI, fMRI, Fast SPGR, phantom, EEG, dynamic PET
image_file_format String 50 Required Image file format AFNI; ANALYZE; AVI; BIORAD; BMP; BRIK; BRUKER; CHESHIRE; COR; DICOM; DM3; FITS; GE GENESIS; GE SIGNA4X; GIF; HEAD; ICO; ICS; INTERFILE; JPEG; LSM; MAGNETOM VISION; MEDIVISION; MGH; MICRO CAT; MINC; MIPAV XML; MRC; NIFTI; NRRD; OSM; PCX; PIC; PICT; PNG; QT; RAW; SPM; STK; TIFF; TGA; TMG; XBM; XPM; PARREC; MINC HDF; LIFF; BFLOAT; SIEMENS TEXT; ZVI; JP2; MATLAB; VISTA; ecat6; ecat7;
image_modality String 20 Required Image modality MRI; PET; CT; SPECT; ultrasound; FA; X-Ray Computed Radiography; Computed Tomography; External Camera Photography; FA; General Microscopy; MRI; Magnetic Resonance; Magnetic Resonance Spectroscopy; Nuclear Medicine; Single Photon Emission Computed Tomography; Ultrasound
scanner_manufacturer_pd String 30 Conditional #image_file_format = DICOM && #image_modality = MRI; #image_file_format = NIFTI && #image_modality = MRI; #image_file_format = MINC&& #image_modality = MRI Scanner Manufacturer
scanner_type_pd String 30 Conditional #image_file_format = DICOM && #image_modality = MRI; #image_file_format = NIFTI && #image_modality = MRI; #image_file_format = MINC&& #image_modality = MRI Scanner Type
scanner_software_versions_pd String 100 Recommended Scanner Software Versions
magnetic_field_strength String 50 Conditional #image_file_format = DICOM && #image_modality = MRI; #image_file_format = NIFTI && #image_modality = MRI; #image_file_format = MINC&& #image_modality = MRI Magnetic field strength
mri_repetition_time_pd Float Conditional #image_file_format = DICOM && #image_modality = MRI; #image_file_format = NIFTI && #image_modality = MRI; #image_file_format = MINC&& #image_modality = MRI Repetition Time (seconds)
mri_echo_time_pd Float Conditional #image_file_format = DICOM && #image_modality = MRI; #image_file_format = NIFTI && #image_modality = MRI; #image_file_format = MINC&& #image_modality = MRI Echo Time (seconds)
flip_angle String 30 Conditional #image_file_format = DICOM && #image_modality = MRI; #image_file_format = NIFTI && #image_modality = MRI; #image_file_format = MINC&& #image_modality = MRI Flip angle
acquisition_matrix String 30 Conditional #image_file_format = DICOM && #image_modality = MRI; #image_file_format = NIFTI && #image_modality = MRI; #image_file_format = MINC&& #image_modality = MRI Acquisition matrix
mri_field_of_view_pd String 50 Conditional #image_file_format = DICOM && #image_modality = MRI; #image_file_format = NIFTI && #image_modality = MRI; #image_file_format = MINC&& #image_modality = MRI Field of View
patient_position String 50 Conditional #image_file_format = DICOM && #image_modality = MRI; #image_file_format = NIFTI && #image_modality = MRI; #image_file_format = MINC&& #image_modality = MRI Patient position
photomet_interpret String 50 Conditional #image_file_format = DICOM && #image_modality = MRI; #image_file_format = NIFTI && #image_modality = MRI; #image_file_format = MINC&& #image_modality = MRI Photometric interpretation
receive_coil String 50 Recommended Receive coil name
transmit_coil String 50 Recommended Transmit coil name
transformation_performed String 4 Required Performed transformation Yes; No
transformation_type String 50 Conditional #transformation_performed=Yes Type of transformation
image_history String 1024 Optional Image history
image_num_dimensions Integer Required Number of dimensions 1 :: 5
image_extent1 Integer Required Extent [1] X dimension 1+
image_extent2 Integer Conditional #image_num_dimensions > 1 Extent [2] Y dimension 1+
image_extent3 Integer Conditional #image_num_dimensions > 2 Extent [3] Z dimension 1+
image_extent4 Integer Conditional #image_num_dimensions > 3 Extent [4]
extent4_type String 50 Conditional #image_num_dimensions > 3 Description of extent [4]
image_extent5 Integer Conditional #image_num_dimensions > 4 Extent [5] 1+
extent5_type String 50 Conditional #image_num_dimensions > 4 Description of extent [5]
image_unit1 String 20 Required Units [1] X dimension Inches; Centimeters; Angstroms; Nanometers; Micrometers; Millimeters; Meters; Kilometers; Miles; Nanoseconds; Microseconds; Milliseconds; Seconds; Minutes; Hours; Hertz
image_unit2 String 20 Conditional #image_num_dimensions > 1 Units [2] Y dimension Inches; Centimeters; Angstroms; Nanometers; Micrometers; Millimeters; Meters; Kilometers; Miles; Nanoseconds; Microseconds; Milliseconds; Seconds; Minutes; Hours; Hertz
image_unit3 String 20 Conditional #image_num_dimensions > 2 Units [3] Z dimension Inches; Centimeters; Angstroms; Nanometers; Micrometers; Millimeters; Meters; Kilometers; Miles; Nanoseconds; Microseconds; Milliseconds; Seconds; Minutes; Hours; Hertz
image_unit4 String 20 Conditional #image_num_dimensions > 3 Units [4] Inches; Centimeters; Angstroms; Nanometers; Micrometers; Millimeters; Meters; Kilometers; Miles; Nanoseconds; Microseconds; Milliseconds; Seconds; Minutes; Hours; Hertz
image_unit5 String 20 Conditional #image_num_dimensions > 4 Units [5] Inches; Centimeters; Angstroms; Nanometers; Micrometers; Millimeters; Meters; Kilometers; Miles; Nanoseconds; Microseconds; Milliseconds; Seconds; Minutes; Hours; Hertz
image_resolution1 Float Required Resolution [1] X dimension 0+
image_resolution2 Float Conditional #image_num_dimensions > 1 Resolution [2] Y dimension 0+
image_resolution3 Float Conditional #image_num_dimensions > 2 Resolution [3] Z dimension 0+
image_resolution4 Float Conditional #image_num_dimensions > 3 Resolution [4] 0+
image_resolution5 Float Conditional #image_num_dimensions > 4 Resolution [5] 0+
image_slice_thickness Float Required Slice thickness
image_orientation String 20 Required Orientation Axial; Coronal; Sagittal
qc_outcome String 25 Recommended Provide information on the conclusion of the quality control methods regarding the quality of the image pass; fail; questionable
qc_description String 255 Recommended Provide information on the methods used to perform quality control checks on the image
qc_fail_quest_reason String 255 Recommended Provide a reason that the image was determined to fail a quality control check or if the quality control check determined that the image was questionable
decay_correction String 10 Recommended Decay correction
frame_end_times Integer Recommended Frame end times
frame_end_unit String 10 Recommended Frame end unit
frame_start_times Integer Recommended Frame start times
frame_start_unit String 10 Recommended Frame start unit
pet_isotope String 50 Recommended PET isotope
pet_tracer String 100 Recommended PET tracer
time_diff_inject_to_image Integer Recommended Time difference injection to image
time_diff_units String 10 Recommended Time difference units