Image data used in this challenge were acquired on a 3 T Philips MRI system over the past 20 years at the UMC Utrecht, the Netherlands. Data consists of 3D time-of-flight Magnetic Resonance Angiography (TOF-MRA) images from subjects who have been preventively screened for the presence of unruptured, intracranial aneurysms (UIAs) because of a positive family history for aneurysmal subarachnoid hemorrhage and/or UIA.
Participants who have registered their team and signed the confidentiality agreement are eligible to download the data on DataverseNL.
Details
| File | Details |
| /3D_TOF_MRA.nii.gz | The 3D TOF-MRA image. |
| /Lippert_classes.json | JSON file containing a dictionary of key/value pairs with the Lippert class variant for the anterior and posterior part of the circle of Willis. More details can be found here. |
| /artery_diameters.json | JSON file containing a dictionary of key/value pairs with diameter annotations. More details can be found here. |
| /bifurcation_angles.json | JSON file containing a dictionary of key/value pairs with angle annotations. More details can be found here. |
Example image
Example annotations
{'Anterior class': 'a', 'Posterior class': 'e'}
/Lippert_classes.json
{'A2(L)': 2.228, 'A1(L)': 1.936, 'M1(L)': 2.183, 'ICA(L)': nan, 'Pcom(L)': nan, 'P1(L)': 2.163, 'BA': 2.832, 'VA(L)': 2.39, 'VA(R)': 2.931, 'P1(R)': 2.386, 'Pcom(R)': nan, 'ICA(R)': 2.924, 'M1(R)': 2.528, 'A1(R)': 1.916, 'A2(R)': nan}
/diameter_annotations.json
{‘A2_A1(L)’: 126.0, ‘ICA top(L)’: 99.0, ‘Pcom_ICA(L)’: nan, ‘M2_M2(L)’: nan, ‘BA top’: 96.0,
‘A2_A1(R)’: 135.0, ‘ICA top(R)’: 115.0, ‘Pcom_ICA(R)’: nan, ‘M2_M2(R)’: 86.0, ‘VBJ’: 113.0}
/angle_bifurcations.json