title: Automation system of X-ray filter in digital subtraction angiography.
abstract: A newly developed automation system for making X-ray filter in DSA was applied to clinical study. A low-dose test exposure image of the patient was input to a computer as a template. The image was scaled down and used to engrave the X-ray filter shape on a polystyrene foam block with a modeling machine according to the image data. The carved part was filled with barium paste, and the block was placed on the tube as an X-ray filter. In this study, the system contributed to make a patient-specific filter of sufficient amount of attenuation in a short time. Also, it could avoid the unreasonable exposure of the patient during the preparation of the filter.
authors.affiliation: Department of Medical Electronics, Suzuka University of Medical Science and Technology, Mie, Japan. takesh-a02@aix.or.jp
authors.forename: T
authors.initials: T
authors.lastname: Akaishi
mesh_terms: D015901:Angiography, Digital Subtraction / Q000379:methods*; D001331:Automation; D005069:Evaluation Studies as Topic; D005374:Filtration; D006801:Humans