- Radiographic demonstration of the cerebral ventricles by direct injection of air or contrast medium; developed and described by Dandy in 1918.
- Demonstration of the contractility of the cardiac ventricles by recording serially the distribution of intravenously injected radionuclide or that of radiographic contrast medium injected through an intracardiac catheter.
[ventriculo- + G. graphe, a writing]
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