The Tc99m venogram obtained with the gamma-ray scintillation camera is adequate to provide information on patency and gross displacement of the major vessels. It serves as a valuable, simple and quick screening procedure. The resolution of the radionuclide venogram does not compare favorably with the contrast venogram, but it can select patients for the more detailed roentgenographic procedure when necessary. Illustrations of Tc99m venograms of the trunk and lower extremities are presented.