Design and characterization of a spatially distributed multibeam field emission x-ray source for stationary digital breast tomosynthesis.

Medical Physics
Xin QianOtto Zhou

Abstract

Digital breast tomosynthesis (DBT) is a limited angle computed tomography technique that can distinguish tumors from its overlying breast tissues and has potentials for detection of cancers at a smaller size and earlier stage. Current prototype DBT scanners are based on the regular full-field digital mammography systems and require partial isocentric motion of an x-ray tube over certain angular range to record the projection views. This prolongs the scanning time and, in turn, degrades the imaging quality due to motion blur. To mitigate the above limitations, the concept of a stationary DBT (s-DBT) scanner has been recently proposed based on the newly developed spatially distributed multibeam field emission x-ray (MBFEX) source technique using the carbon nanotube. The purpose of this article is to evaluate the performance of the 25-beam MBFEX source array that has been designed and fabricated for the s-DBT system. The s-DBT system records all the projection images by electronically activating the multiple x-ray beams from different viewing angles without any mechanical motion. The configuration of the MBFEX source is close to the published values from the Siemens Mammomat system. The key issues including the x-ray flux, focal s...Continue Reading

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Citations

May 28, 2013·Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society·Shiyu XuYing Chen
Jan 10, 2013·Medical Physics·Ioannis Sechopoulos
Sep 7, 2011·Academic Radiology·Jay A Baker, Joseph Y Lo
Aug 2, 2011·Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment·Yueh Z LeeOtto Zhou
Nov 10, 2015·IEEE Transactions on Medical Imaging·Fanghao YeDa Xing
Jun 20, 2015·Dento Maxillo Facial Radiology·J ShanO Zhou
May 13, 2015·Theoretical Biology & Medical Modelling·Graham Alvare, Richard Gordon
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Aug 5, 2016·Medical Physics·Bruno De ManNorbert Pelc
Aug 5, 2016·Medical Physics·V Bogdan NeculaesBrian Lounsberry
Feb 2, 2017·Physics in Medicine and Biology·Praneeth KandlakuntaTiezhi Zhang
Dec 6, 2014·Physics in Medicine and Biology·Jing ShanOtto Zhou
Feb 7, 2018·Optics Express·G W GoonanS Dubsky

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