1naresh<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
                )

        )

)
1naresh<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
                )

        )

)
RT Journal Article
SR Electronic
T1 The postoperative lumbar spine: evaluation of epidural scar over a 1-year period.
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 183
OP 186
VO 19
IS 1
A1 Ross, J S
A1 Obuchowski, N
A1 Zepp, R
YR 1998
UL http://www.ajnr.org/content/19/1/183.abstract
AB PURPOSE We documented the morphological changes on enhanced MR imaging studies that occur in epidural scar over a period of 1 year after lumbar diskectomy.METHODS The study population was culled from a randomized, multicenter clinical trial designed to evaluate the efficacy of a device inhibiting postoperative epidural fibrosis after single-level, unilateral laminectomy/diskectomy for herniated lumbar disk. Analysis was restricted to 71 control subjects who did not receive the device. All patients underwent surgery after receiving clinical and MR examinations, with follow-up MR studies at 6 and 12 months. Evaluation of all MR images was performed by one interpreter, who was blinded to treatment arm and clinical findings. The extent of epidural scar seen at the 6- and 12-month MR examinations was graded on a scale of 0 to 4 for each quadrant at each imaging section encompassing the surgical level.RESULTS Eighty-five percent of the patients had no change in the amount of anterior epidural scar between the 6- and 12-month MR examinations; 75% of the patients showed no change in the amount of posterior epidural scar between the 6- and 12-month examinations.CONCLUSION The majority of our patients had no change in the amount of epidural scarring visible at enhanced MR imaging over a 1-year period after lumbar laminectomy/diskectomy.