Line-scanning diode-array digital chest imaging

A line scanning diode array digital chest diagnostic x-ray machine has been developed which captures very high detail through the use of self-scanning linear diode arrays. The authors' latest model represents a significant improvement over our previous ones in the following aspects: (1) The U-arm gantry containing the x-ray tube and detector assembly is moved during the scanning and the patient therefore does not move. (2) The digital images can be taken with the patient standing. (3) The field of view has been increased to include the entire chest. (4) The matrix size has been greatly expanded. (5) A newly developed rare earth phosphor screen with much higher resolution and good absorption is used. The images are digitally processed, resulting in a balanced image in which structures in all regions of the chest are simultaneously displayed with optimum contrast