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By Etta D. Pisano MD FACR, Martin J. Yaffe PhD, Cherie M. Kuzmiak DO

ISBN-10: 0781741424

ISBN-13: 9780781741422

Written by means of famous leaders in electronic mammography, this quantity is a whole advisor to this new expertise and its optimum medical use. assurance comprises descriptions of present and rising detector applied sciences and special stories of scientific trials evaluating electronic mammography to screen-film mammography for either screening and prognosis. different chapters study quality controls approaches, speak about archiving and PACS concerns, and preview destiny advancements in machine aided detection, picture processing, tomosynthesis, electronic subtraction mammography, and snapshot show. The e-book includes a entire atlas of electronic mammography circumstances, with acceptable work-up photos and pathologic diagnoses for all types of lesion.

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Because of the microcalcifications, except for improvements in the efficiency of the detector system or scatter rejection, the dose used in mammography should probably not be reduced much from current levels. Energy Spectra for Digital Mammography X-ray sources commercially available for mammography are not monoenergetic, but generally produce a spectrum similar to that shown in Figure 2-17. In screen-film mammography, the spectrum is chosen to provide the greatest practical contrast, while using an effective energy high enough such that the breast is reasonably well penetrated, and the dose is not excessive.

Energy Spectra for Digital Mammography X-ray sources commercially available for mammography are not monoenergetic, but generally produce a spectrum similar to that shown in Figure 2-17. In screen-film mammography, the spectrum is chosen to provide the greatest practical contrast, while using an effective energy high enough such that the breast is reasonably well penetrated, and the dose is not excessive. This tends to drive the choice toward 14 Digital Mammography not change rapidly with energy, and the use of higher energies actually allows lower doses to be used and reduces the dynamic range requirements of the detector.

To use the detector in this way, it is necessary that the detector can be read out quickly to determine what the optimum exposure factors should be. This may impose difficulty for some of the current detectors and creative ways of accomplishing this will have to be found. Optimization of exposure can consider various statistics from a short test pulse made prior to the actual image FIGURE 3-13. MTFs of some current digital mammography systems. 26 Digital Mammography acquisition. These might include the minimum signal from the most attenuating region of the breast.

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Digital Mammography by Etta D. Pisano MD FACR, Martin J. Yaffe PhD, Cherie M. Kuzmiak DO


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