Abstract
A method is presented for evaluating the resolution of x-ray focal spots by using a radiographic test pattern. The influence of radiographic magnification upon resolution with a focal spot of 0.05 mm was investigated. A gain in resolution occurs with high-speed and par-speed screens at 3 to 5 X magnification. With detail screens, resolution is greater without magnification. In serial angiography, magnification will compensate for deterioration in image quality caused by the serial film changer. Also, small vessels in brain specimens, not visualized by current techniques, were imaged at 3 to 5 X magnification without increasing the iodine concentration of the contrast medium.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
