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
                )

        )

    [ec928560-6755-4dc9-89d9-b419a1ce6af9] => Array
        (
            [runtime-id] => ec928560-6755-4dc9-89d9-b419a1ce6af9
            [type] => toll-free-key
            [service-id] => ajnr-ac.highwire.org
            [access-type] => Controlled
            [privilege] => Array
                (
                    [9b7ce433-c832-4ff9-9025-c6d9391fa7f9] => Array
                        (
                            [runtime-id] => 9b7ce433-c832-4ff9-9025-c6d9391fa7f9
                            [type] => toll-free-key
                        )

                )

            [credentials] => Array
                (
                    [method] => toll-free-key
                    [value] => tf_ipsecsha;6b080104278aafd98fc1c39908faa2ed1f818f0a
                )

        )

)
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
                )

        )

    [3ea9ed9c-762a-4574-ab45-379d32bedda9] => Array
        (
            [runtime-id] => 3ea9ed9c-762a-4574-ab45-379d32bedda9
            [type] => toll-free-key
            [service-id] => ajnr-ac.highwire.org
            [access-type] => OpenAccess
            [privilege] => Array
                (
                    [c1eb6e83-a6ee-46b2-9c1a-21fe1b5ab13b] => Array
                        (
                            [runtime-id] => c1eb6e83-a6ee-46b2-9c1a-21fe1b5ab13b
                            [type] => toll-free-key
                        )

                )

            [credentials] => Array
                (
                    [method] => toll-free-key
                    [value] => tf_ipsecsha;6b080104278aafd98fc1c39908faa2ed1f818f0a
                )

        )

)
RT Journal Article
SR Electronic
T1 Syringomyelia Fluid Dynamics and Cord Motion Revealed by Serendipitous Null Point Artifacts during Cine MRI
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
DO 10.3174/ajnr.A5328
A1 Honey, C.M.
A1 Martin, K.W.
A1 Heran, M.K.S.
YR 2017
UL http://www.ajnr.org/content/early/2017/07/27/ajnr.A5328.abstract
AB SUMMARY: Dynamic MR imaging was used to evaluate a cervical syrinx in an adolescent boy with an associated hindbrain herniation. Null artifacts were present on one of the sequences that allowed simultaneous high-resolution visualization of syrinx fluid motion and the anatomy of the syrinx walls. A brief review of the theories of syrinx formation and propagation is provided with a comment on why the Williams “slosh” theory of syrinx progression is supported by our unique imaging.