This report describes a modification of the method of venous angiography for the evaluation of pericardial disease, with cineradiography. The use of venous angiography with a rapid serial film-changer for diagnosis of pericardial effusion was described by Williams and Steinberg in 1949 (1). Paul et al. introduced the use of carbon dioxide angiography in man in 1957, offering an alternative and very safe technic (2). The technic to be described herein is quick, simple, and inexpensive. Analysis of our material suggests that the sense of motion imparted by cineradiography may give information about the underlying gross pathology, which is less readily apparent on large serial films. Materials and Method This study is based on the examination of 26 patients suspected clinically of having pericardial effusions, and an additional 3 patients with clinical evidence of pericardial constriction. Nine patients without evidence of pericardial or cardiac disease are included as normal controls. A sharply bevelled 2 1...