Physical Examination of Patients with Cerebrospinal Fluid Shunts:Is There Useful Information in Pumping the Shunt?
Pediatrics 89:470-473, Piatt,J.H., 1992
Evaluation of CSF Shunt Function:Value of Functional Examination with Contrast Material
AJR 156:801-805, Benzel,E.C.,et al, 1991