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British Journal of Radiology 75 (2002),763-766 © 2002 The British Institute of Radiology

Short communication

An alignment method for mammographic X-ray spectroscopy under clinical conditions

S Miyajima, MS 1 K Imagawa, MS 1 and M Matsumoto, PhD 2

1 Graduate School of Medicine, Course of Health Sciences and 2 School of Allied Health Sciences, Faculty of Medicine, Osaka University, 1-7 Yamadaoka, Suita, Osaka, 565-0871, Japan

This paper describes an alignment method for mammographic X-ray spectroscopy under clinical conditions. A pinhole, a fluorescent screen, a laser device and the case for a detector are used for alignment of the focal spot, a collimator and a detector. The method determines the line between the focal spot and the point of interest in an X-ray field radiographically. The method allows alignment for both central axis and off-axis directions.






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