Flying focus is a technology of image acquisition in digital breast tomosynthesis characterized by a continuous sweep during shooting.
Sharpness in digital systems is determined by the modulation transfer function (MTF), which determine contrast transfer as a function of spatial frequency.
Since a MTF strong value reduction occurs in the scan direction and on-plane sharpness is reduced as the distance of the object of interest from the detector increases, this suggests that detectability of small details in the reconstructed planes in flying focus systems varies with the details themselves position.
- 1. Vecchio S, Albanese A, Vignoli P et-al. A novel approach to digital breast tomosynthesis for simultaneous acquisition of 2D and 3D images. Eur Radiol. 2011;21 (6): 1207-13. doi:10.1007/s00330-010-2041-y - Pubmed citation
- 2. Pacifici S, Digital Breast Tomosynthesis: Past, present and future. The Arab Health Imaging and Diagnostic Magazine 2011;4:16-18
- 3. Marshall NW, Bosmans H. Measurements of system sharpness for two digital breast tomosynthesis systems. Phys Med Biol. 2012;57 (22): 7629-50. doi:10.1088/0031-9155/57/22/7629 - Pubmed citation
- 4. Shaheen E, Marshall NW, Bosmans H. The influence of position within the breast on microcalcification detectability in continuous tube motion digital breast tomosynthesis. Proc. SPIE 8668, Medical Imaging 2013: Physics of Medical Imaging, 86684I (March 6, 2013); doi:10.1117/12.2007870
- 5. Pacifici S., "Tomosintesis de Geometria Variable", 2011, ISBN: 13-797-84-613-8965-0
- 6. Samei E, Murphy S, Richard S. Assessment of multi-directional MTF for breast tomosynthesis. Phys Med Biol. 2013;58 (5): 1649-61. doi:10.1088/0031-9155/58/5/1649 - Pubmed citation
- 7. Shaheen E, Marshall N, Bosmans H, Investigation of the effect of tube motion in breast tomosynthesis: continuous or step and shoot? Proc. SPIE 7961, Medical Imaging 2011: Physics of Medical Imaging, 79611E (March 16,2011); doi:10.1117/12.877348;