Advanced digital mammography system based on phase contrast technology

Tomonori Gido; Sumiya Nagatsuka; Kouji Amitani; Hisashi Yonekawa; Masaya Shimoji; Chika Honda

doi:10.1117/12.594972

20 April 2005 Advanced digital mammography system based on phase contrast technology

Tomonori Gido, Sumiya Nagatsuka, Kouji Amitani, Hisashi Yonekawa, Masaya Shimoji, Chika Honda

Proceedings Volume 5745, Medical Imaging 2005: Physics of Medical Imaging; (2005) https://doi.org/10.1117/12.594972
Event: Medical Imaging, 2005, San Diego, California, United States

Abstract

The digital mammography system evaluated here is a digital full-field phase contrast mammography (PCM) system that employs a practical molybdenum x-ray tube with a 0.1mm focal spot size. By using custom apparatus to position 14"x17" photostimulable phosphor plate 49cm from the object, a distance of 65cm was obtained between the object and the focal spot of the x-ray tube. A plate optimized for the PCM system acquired images magnified 1.75 times with a 14"x17" and was scanned at a sampling pitch of 43.75μm by using a CR system. The diagnostic images were reduced in printing to actual object size with a pixel size of 25μm on 8"x10" dry-processed film with a maximum density of 4. This study compares the performance of the system with that of a usual contact CR mammography system.

Citation Download Citation

Tomonori Gido, Sumiya Nagatsuka, Kouji Amitani, Hisashi Yonekawa, Masaya Shimoji, and Chika Honda "Advanced digital mammography system based on phase contrast technology", Proc. SPIE 5745, Medical Imaging 2005: Physics of Medical Imaging, (20 April 2005); https://doi.org/10.1117/12.594972

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