We performed magnetic resonance imaging in 30 patients with hydrocephalus with Sophy adjustable pressure valves (PAVS). A pressure check following the MRI study showed a significant proportion with pressure valve changes, which could easily be readjusted by percutaneous manipulation. The value of the PAVS and its safety during MRI examinations are discussed.
Fransen, P., Dooms, G., & Thauvoy, C. (1992). Safety of the Adjustable Pressure Ventricular Valve in Magnetic-resonance-imaging - Problems and Solutions. Neuroradiology : a journal devoted to neuroimaging and interventional neuroradiology, 34(6), 508-509. https://doi.org/10.1007/BF00598962 (Original work published 1992)