Stationary digital breast tomosynthesis system with a multi-beam fleld emission x-ray source array

被引：22

作者：

Yang, Guang ^{[1
]}

Rajaram, Ramya ^{[2
]}

Cao, Guohua ^{[1
]}

Sultana, Shabana ^{[2
]}

Liu, Zhijun ^{[1
]}

Lalush, David ^{[3
,4
]}

Lu, Jianping ^{[1
]}

Zhou, Otto ^{[1
,2
,5
]}

机构：

[1] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA

[2] Univ N Carolina, Curriculum Appl& Mat Sci, Chapel Hill, NC 27599 USA

[3] Univ N Carolina, Joint Dept Biomed Engn, Chapel Hill, NC 27599 USA

[4] North Carolina State Univ, Raleigh, NC 27695 USA

[5] Univ N Carolina, Lineberger Comprehens Canc Ctr, Chapel Hill, NC 27599 USA

来源：

MEDICAL IMAGING 2008: PHYSICS OF MEDICAL IMAGING, PTS 1-3 | 2008年 / 6913卷

关键词：

digital breast tomosynthesis; carbon nanotubes; field emission;

D O I：

10.1117/12.770622

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

A stationary digital breast tomosynthesis (DBT) system using a carbon nanotube based multi-beam field emission x-ray (MBFEX) source has been designed. The purpose is to investigate the feasibility of reducing the total imaging time, simplifying the system design, and potentially improving the image quality comparing to the conventional DBT scanners. The MBFEX source consists of 25 individually programmable x-ray pixels which are evenly angular spaced covering a 48 degrees field of view. The device acquires the projection images by electronically switching on and off the individual X-ray pixels without mechanical motion of either the x-ray source or the detector. The designs of the x-ray source and the imaging system are presented. Some preliminary results are discussed.

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