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Table 1: 
Summary of DSA and 4D-CE-MRA findings
4D-CE-MRAInterobserver AgreementDSA4D-CE-MRAaIntermodality Agreement
Observer 1Observer 2
Main feeders
    IMA3343
    Oph A2332
    Facial A2121
    Occipital A1101
    PCA016/15 (40%)118/15 (53%)
    ACA0221
    Cerebellar A0010
    ICA0110
    Other feeders7316
Tumor stainb
    Grade 00000
    Grade 18714/15 (93%)6813/15 (87%)
    Grade 27897
  • 

    Note:—IMA indicates internal maxillary artery; Oph A, ophthalmic artery; Facial A, facial artery; Occipital A, occipital artery; PCA, posterior cerebral artery; ACA, anterior cerebral artery; Cerebellar A, cerebellar artery; ICA, internal carotid artery.
  • 


    ↵a Consensus reading of the 2 observers.
  • 


    ↵b The degree of tumor stain was classified as grade 0, not visible; grade 1, visible only after the late arterial phase; and grade 2, visible from the early arterial phase.