1naresh
Array
(
    [urn:ac.highwire.org:guest:identity] => Array
        (
            [runtime-id] => urn:ac.highwire.org:guest:identity
            [type] => guest
            [service-id] => ajnr-ac.highwire.org
            [access-type] => Controlled
            [privilege] => Array
                (
                    [urn:ac.highwire.org:guest:privilege] => Array
                        (
                            [runtime-id] => urn:ac.highwire.org:guest:privilege
                            [type] => privilege-set
                            [privilege-set] => GUEST
                        )

                )

            [credentials] => Array
                (
                    [method] => guest
                )

        )

)
1naresh
Array
(
    [urn:ac.highwire.org:guest:identity] => Array
        (
            [runtime-id] => urn:ac.highwire.org:guest:identity
            [type] => guest
            [service-id] => ajnr-ac.highwire.org
            [access-type] => Controlled
            [privilege] => Array
                (
                    [urn:ac.highwire.org:guest:privilege] => Array
                        (
                            [runtime-id] => urn:ac.highwire.org:guest:privilege
                            [type] => privilege-set
                            [privilege-set] => GUEST
                        )

                )

            [credentials] => Array
                (
                    [method] => guest
                )

        )

)


Table 1: 
Comparison of demographic and conventional MR imaging characteristics between low- and high-grade PITs
CharacteristicsLow-Grade TumorHigh-Grade TumorP Value
Demography
 Age (mean) (yr)9.71 (SD, 3.66)9.02 (SD, 4.11).51
 Male sex (No.) (%)17 (65.4%)23 (82.1%).16
Location (No.).13
 Cerebral hemisphere95
 Cerebellum1211
 Basal ganglia/brain stem33
 Other29
Conventional MR imaging
 Cystic degeneration (No.) (%)16 (61.5%)13 (46.4%).27
 Hemorrhage (No.) (%)5 (19.2%)10 (35.7%).18
 Necrosis (No.) (%)5 (19.2%)14 (50.0%).02
 Enhancement (No.) (%)21 (80.8%)25 (89.3%).62
 Peritumoral edema (No.) (%)10 (38.5%)15 (53.6%).27
 Clear margin (No.) (%)14 (53.8%)13 (46.4%).59