[en] This paper describes RI cisternographic (RIC) examinations of whiplash-associated disorder (WAD) and results of their treatment with nerve block and epidural blood patch (EBP) conducted in authors' facilities. Subjects were 40 chronic (av. symptomatic period of 3.1 y) WAD patients (av. age 34 y) with traffic (28 cases), sports (7) and falling (5) causes with complication of suspicious cerebrospinal fluid (CSF) leak. RIC was done 2.5-24 hr after injection of 37 MBq of ¹¹¹In-diethylenetriamine pentaacetic acid (DTPA) in the medullary space through epidural puncturing needle. Positive finding of clear leak or early accumulation of RI in the bladder was seen in 21 cases and negative, in 19. Positive patients had significantly higher rates of headache, abnormal vision and fatigue than negative ones. EBP was conducted through X-ray to all positive patients and to negative ones with strongly suspicious leak complication (7 cases), which resulted in improvement of symptoms like headache and vision in the former, but no improvement in the latter cases. Repeated RIC of the patients with poor improvement in the former was suggested effective for judgment of repetition of EBP treatment. Cervical facet joint blocks were found effective in cases with posterior cervical pain. Symptoms in WAD accompanying headache should be differentially diagnosed whether it is derived from posttraumatic CSF leak or from pain due to cervical facet arthritis. (R.T.)