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
                )

        )

    [c725b4db-676e-4de3-bddd-ea6057559fc9] => Array
        (
            [runtime-id] => c725b4db-676e-4de3-bddd-ea6057559fc9
            [type] => toll-free-key
            [service-id] => ajnr-ac.highwire.org
            [access-type] => Controlled
            [privilege] => Array
                (
                    [b667e7e0-6473-477e-9c69-eedf6b7729c0] => Array
                        (
                            [runtime-id] => b667e7e0-6473-477e-9c69-eedf6b7729c0
                            [type] => toll-free-key
                        )

                )

            [credentials] => Array
                (
                    [method] => toll-free-key
                    [value] => tf_ipsecsha;d97a578fd6aeb0dd300abe4cf57499da7c60d48b
                )

        )

)
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] => FreeToRead
            [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
                )

        )

    [d0895016-fe41-4674-b750-faede1c3fa17] => Array
        (
            [runtime-id] => d0895016-fe41-4674-b750-faede1c3fa17
            [type] => toll-free-key
            [service-id] => ajnr-ac.highwire.org
            [access-type] => FreeToRead
            [privilege] => Array
                (
                    [083ec2fb-34cb-43cb-b2ea-3e0d1658d052] => Array
                        (
                            [runtime-id] => 083ec2fb-34cb-43cb-b2ea-3e0d1658d052
                            [type] => toll-free-key
                        )

                )

            [credentials] => Array
                (
                    [method] => toll-free-key
                    [value] => tf_ipsecsha;d97a578fd6aeb0dd300abe4cf57499da7c60d48b
                )

        )

)
RT Journal Article
SR Electronic
T1 Epidural Blood Patch at C2: Diagnosis and Treatment of Spontaneous Intracranial Hypotension
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 2663
OP 2666
VO 26
IS 10
A1 Rai, Ansaar
A1 Rosen, Charles
A1 Carpenter, Jeffrey
A1 Miele, Vincent
YR 2005
UL http://www.ajnr.org/content/26/10/2663.abstract
AB Summary: Spontaneous intracranial hypotension in a 37-year-old man with intractable headaches was diagnosed on MR imaging. A generous CSF leak was identified at C2 on CT myelography. Successful treatment was performed with CT-guided blood patch at the leakage site after the patient had failed 2 lumbar blood patches. Imaging-guided precise placement of the blood patch is safe and recommended when a lumbar blood patch away from the leakage site could be ineffective.