Article ; Online: A prototype Multi-X-ray-source array (MXA) for digital breast tomosynthesis.
Physics in medicine and biology
2020 Volume 65, Issue 23, Page(s) 235033
Abstract: The design and testing of a prototype Multi-X-ray-source Array (MXA) for digital breast tomosynthesis is reported. The MXA is comprised of an array of tungsten filament cathodes with focus cup grid-controlled modulation and a common rotating anode housed ...
Abstract | The design and testing of a prototype Multi-X-ray-source Array (MXA) for digital breast tomosynthesis is reported. The MXA is comprised of an array of tungsten filament cathodes with focus cup grid-controlled modulation and a common rotating anode housed in a single vacuum envelope. Prototypes consisting of arrays of three-source elements and eleven-source-elements were fabricated and evaluated. The prototype sources demonstrated focal spot sizes of 0.3 mm at 45 kV with 50 mA. Measured x-ray spectra were consistent with the molybdenum anode employed, and the tube output (air kerma) was between 0.6 mGy/100 mAs at 20 kV and 17 mGy/100 mAs at 45 kV with a distance of 100 cm. HVL measurements ranged from 0.5 mm Al at 30 kV to 0.8 mm Al at 45 kV, and x-ray pulse widths were varied from 20 ms to 110 ms at operating frequencies ultimately to be limited by source turn-on/off times of ∼1 ms. Initial results of reconstructed tomographic data are presented. |
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MeSH term(s) | Breast Neoplasms/diagnostic imaging ; Female ; Humans ; Mammography/instrumentation ; Mammography/methods ; Phantoms, Imaging ; Tomography, X-Ray Computed/instrumentation ; Tomography, X-Ray Computed/methods |
Language | English |
Publishing date | 2020-12-18 |
Publishing country | England |
Document type | Journal Article ; Research Support, N.I.H., Extramural ; Research Support, U.S. Gov't, Non-P.H.S. |
ZDB-ID | 208857-5 |
ISSN | 1361-6560 ; 0031-9155 |
ISSN (online) | 1361-6560 |
ISSN | 0031-9155 |
DOI | 10.1088/1361-6560/abc305 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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