Data:DBP2:UNC

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UNC Data

Data Access

• Media:UNCData.tgz
• There are 2 autistic children and 2 normal controls scanned at 2 years with follow up at 4 years.
• In each subject folder (????-???), there are two folders corresponding to each scan:
  •  ????-???-01: Time 1 (scan at 2 years old)
  •  ????-???-02: Time 2 (scan at 4 years old)
• Each scan folder contains 5 files:
  •  ????-???-??_10_T1.nrrd: T1-weigthed image
  •  ????-???-??_10_t2_fit.nrrd: T2-weigthed image
  •  ????-???-??_10_pd_fit.nrrd: PD-weigthed image
  •  ????-???-??_10_t2_fit_hard.nrrd: Tissue segmentation label map image
  •  ????-???-??_combSegHAVCPG_newHippo.nrrd: Subcortical structures segmentation

Data Description

• Structural MRI: All scans are conducted on a 1.5 T Siemens scanner. Sequences include: a T1 weighted inversion recovery magnetization preparation (IR Prep) sequence with a slice thickness of 1.5 mms in the coronal plane, TE=5.4, TR=12.3, NEX=1, FOV=20 cm; flip angle = 40o; 256 X 192 matrix. PD/ T2 weighted fast spin-echo images will be acquired with the following parameters: 3.0 mm coronal slices, TE = 17/75, TR = 7200 ms, NEX = 1, FOV=20, 256 X 192 matrix.
• Tissue segmentation: Atlas-based automatic tissue segmentation via an Expectation-Maximization scheme
• Subcortical Structures: Left and Right manual segmentation of amygdala, caudate, hippocampus, lateral ventricles, pallidus, putamen

Data Contact

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