Multiple Injections for Angiocardiography.

In the past the value of angiocardiography has been limited by the practice of giving only one injection of contrast medium, so that selective angiocardiography tends to be restricted to the end of cardiac catheterization. Moreover, the use of biplane film changers permits only views strictly at right angles to one another. The newer contrast media are tolerated better than those formerly available and multiple injections can now be employed. As this is still not universal practice it was thought worth while to record experiences with high doses of hypaque and triosil.