2010
DOI: 10.1117/12.844586
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Distributed source x-ray tube technology for tomosynthesis imaging

Abstract: Tomosynthesis imaging requires projection images from different viewing angles. Conventional systems use a moving xray source to acquire the individual projections. Using a stationary distributed x-ray source with a number of sources that equals the number of required projections, this can be achieved without any mechanical motion. Advantages are a potentially faster image acquisition speed, higher spatial and temporal resolution and simple system design. We present distributed x-ray sources based on carbon na… Show more

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Cited by 15 publications
(15 citation statements)
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“…45 • -60 • ) studied resulted in increased image quality, while the optimal number of projections was achieved at a relatively low number (approx. [15][16][17][18][19][20]. Other aspects, e.g., a correction or reduction of the x-ray scatter signal in DBT projections, still necessitate further research before application in clinical DBT imaging.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…45 • -60 • ) studied resulted in increased image quality, while the optimal number of projections was achieved at a relatively low number (approx. [15][16][17][18][19][20]. Other aspects, e.g., a correction or reduction of the x-ray scatter signal in DBT projections, still necessitate further research before application in clinical DBT imaging.…”
Section: Discussionmentioning
confidence: 99%
“…For example, to avoid focal spot blurring due to the x-ray tube motion during acquisition 18 and potentially shorten total acquisition time, a carbon nanotube array of x-ray sources is being investigated as a replacement for the x-ray tube and rotating gantry. [19][20][21][22][23][24][25] In recent work, the investigators replaced the x-ray tube and gantry of a commercial DBT system (Selenia Dimensions, Hologic, Inc., Bedford, MA) with a carbon nanotube array with 31 x-ray sources, spanning 370 mm, resulting in an angular coverage of 30 • . The stationary x-ray source was shown to yield an improved modulation transfer function (MTF) compared to that with a standard rotating x-ray tube, in addition to an increase in the sharpness of phantom microcalcification images.…”
Section: Iia General System Designmentioning
confidence: 99%
“…A dose rate of 1.24 Gy/min at the centre of the irradiated object was obtained at an emission current of 3.0 mA [169]. High energy sources for tomosynthesis based on such multipixel sources, with high anode potentials of up to 160 kV, have also been demonstrated by Sprenger et al [241]. This was achieved using a square array of 4 × 13 electron sources for applications including image guided radiotherapy.…”
Section: Multi-pixel Sourcesmentioning
confidence: 97%
“…The electrostatic lenses are especially important in so called stationary computed tomography (CT) scans with distributed X-ray tubes [12,14] where hundreds of X-ray sources surround the patient [14]. Depending on applications, electron optics systems can have different combination of electrostatic lenses [15][16][17][18].…”
Section: Introductionmentioning
confidence: 99%