1naresh2naresh
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
                )

        )

    [5f74ed57-4f9c-49df-9ee4-6275c68d73ec] => Array
        (
            [runtime-id] => 5f74ed57-4f9c-49df-9ee4-6275c68d73ec
            [type] => toll-free-key
            [service-id] => ajnr-ac.highwire.org
            [access-type] => Controlled
            [privilege] => Array
                (
                    [28d05def-bf36-4ce1-8d66-ce6676dc9a79] => Array
                        (
                            [runtime-id] => 28d05def-bf36-4ce1-8d66-ce6676dc9a79
                            [type] => toll-free-key
                        )

                )

            [credentials] => Array
                (
                    [method] => toll-free-key
                    [value] => tf_ipsecsha;24915fd0964cbfa6ba5d40351044b96ce2090634
                )

        )

)
1naresh2naresh
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
                )

        )

    [5f74ed57-4f9c-49df-9ee4-6275c68d73ec] => Array
        (
            [runtime-id] => 5f74ed57-4f9c-49df-9ee4-6275c68d73ec
            [type] => toll-free-key
            [service-id] => ajnr-ac.highwire.org
            [access-type] => Controlled
            [privilege] => Array
                (
                    [28d05def-bf36-4ce1-8d66-ce6676dc9a79] => Array
                        (
                            [runtime-id] => 28d05def-bf36-4ce1-8d66-ce6676dc9a79
                            [type] => toll-free-key
                        )

                )

            [credentials] => Array
                (
                    [method] => toll-free-key
                    [value] => tf_ipsecsha;24915fd0964cbfa6ba5d40351044b96ce2090634
                )

        )

)


Contrast enhancement and gray matter-white matter contrast at 80 and 120 kVp (numeric average ± standard deviation)