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British Journal of Radiology (1996) 69, 1077-1078
© 1996 British Institute of Radiology
doi: 10.1259/0007-1285-69-827-1077
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Focal spot sizes in dual-track Mo and Rh target mammographic X-ray tubes

J Law 1 A Robinson 2 and A C Underwood 2

1 Department of Medical Physics, The University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh EH4 2XU 2 Department of Medical Physics & Clinical Technology, Weston Park Hospital, Sheffield S10 2SJ

This excerpt was created in the absence of an abstract.

It is well known that the focal spot size in an imaging system is one of the major factors which determine the resolution. In mammography systems very high resolution is required to visualize small microcalcifications of the order of 100 µm or less [1]. This has led to the requirement for smaller foci, e.g. less that 0.5 mm as specified by the Department of Health (DoH) in the UK [2].

Received for publication December 4, 1995. Revision received June 14, 1996. Accepted for publication August 13, 1996.






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