1naresh2naresh<pre>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
                )

        )

    [29da0388-0f4a-439c-a133-004884c2fedc] => Array
        (
            [runtime-id] => 29da0388-0f4a-439c-a133-004884c2fedc
            [type] => toll-free-key
            [service-id] => ajnr-ac.highwire.org
            [access-type] => Controlled
            [privilege] => Array
                (
                    [a5979fb5-c39d-499e-a76c-b5f1b8fe4359] => Array
                        (
                            [runtime-id] => a5979fb5-c39d-499e-a76c-b5f1b8fe4359
                            [type] => toll-free-key
                        )

                )

            [credentials] => Array
                (
                    [method] => toll-free-key
                    [value] => tf_ipsecsha;d8576dba7e11c3650a17637ddc3748dd3bcd2bcd
                )

        )

)
1naresh2naresh<pre>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] => OpenAccess
            [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
                )

        )

    [2319b747-f08f-409c-bfba-b38abda0fa3c] => Array
        (
            [runtime-id] => 2319b747-f08f-409c-bfba-b38abda0fa3c
            [type] => toll-free-key
            [service-id] => ajnr-ac.highwire.org
            [access-type] => OpenAccess
            [privilege] => Array
                (
                    [4ef528bb-ce78-4a4e-ba92-60861e13042d] => Array
                        (
                            [runtime-id] => 4ef528bb-ce78-4a4e-ba92-60861e13042d
                            [type] => toll-free-key
                        )

                )

            [credentials] => Array
                (
                    [method] => toll-free-key
                    [value] => tf_ipsecsha;d8576dba7e11c3650a17637ddc3748dd3bcd2bcd
                )

        )

)
PT  - JOURNAL ARTICLE
AU  - Azizyan, A.
AU  - Sanossian, N.
AU  - Mogensen, M.A.
AU  - Liebeskind, D.S.
TI  - Fluid-Attenuated Inversion Recovery Vascular Hyperintensities: An Important Imaging Marker for Cerebrovascular Disease
AID  - 10.3174/ajnr.A2265
DP  - 2011 Nov 01
TA  - American Journal of Neuroradiology
PG  - 1771--1775
VI  - 32
IP  - 10
4099  - http://www.ajnr.org/content/32/10/1771.short
4100  - http://www.ajnr.org/content/32/10/1771.full
SO  - Am. J. Neuroradiol.2011 Nov 01; 32
AB  - SUMMARY: Vascular hyperintensities have been noted on FLAIR sequences obtained in the setting of acute stroke and intracranial steno-occlusive disease. The presence of FVHs likely represents disordered blood flow, often from collaterals distal to arterial occlusion or stenosis. As opposed to other vessel signs seen in arterial insufficiency, FVH is unique in that it does not represent thrombus, but rather sluggish or disordered blood flow through vessels. This review will discuss the diagnostic and prognostic value of FVH and its impact on clinical decision-making. DWIdiffusion-weighted imagingFLAIRfluid-attenuated inversion recoveryFVHFLAIR vascular hyperintensityGRE-BAgradient-echo susceptibility vessel blooming artifactsHMCAShyperdense MCA sign seen on CTHVShyperintense vessel signMCAmiddle cerebral arteryMRAMR angiographyMRIMR imagingNIHSSNational Institutes of Health Stroke ScalePWIperfusion-weighted imagingrtPArecombinant tissue plasminogen activatorTOFtime of flightTIAtransient ischemic attacks