Scanography with rotation of the radiographic tube: A new method

The quality of the radiographic image is compromised by secondary radiations and geometric unsharpness, which is proportional to the focal spot size. The authors describe a new system which significantly improved both elimination of scatter and reduction of the apparent focal spot size and gives superior radiographs to those made with a conventional x-ray machine. Advantages of the new system include the lack of resolution and density gradients across the radiograph, increased contrast due to decreased scatter, increased resolution, possible routine radiography with a 100-μ focal spot, up to 2.5X magnification, increased acceptable kVp range, and decreased dose to the patient.