Narrow energy band X-rays via mosaic crystal for mammography application

Gambaccini, M.; Taibi, Angelo; Guerra, A. Del; Frontera, F.; Marziani, M.

doi:10.1016/0168-9002(95)00431-9

Cited by 36 publications

(25 citation statements)

References 13 publications

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“…Previous work has shown the feasibility of using monochromatic X-rays in mammography due to the removal of low-energy components and the tuneability of the energy according to the breast thickness being imaged [6], [7].…”

Section: Discussionmentioning

confidence: 99%

A novel approach to scatter-free imaging for the improvement of breast cancer Detection

et al. 2014

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Compton scattering is one of the main causes of image degradation in X-ray imaging. This is particularly noticeable in mammography where details of interest feature low contrast in comparison to the surrounding tissue. This work shows the feasibility of obtaining scatter-free images by using a quasimonochromatic X-ray beam and a pixellated spectroscopic detector. This work presents characterisation of the imaging system and quantitative imaging data of a low contrast test object. An improvement in contrast by 8% was observed compared to images obtained including scattered radiation. Comparison with a conventional setup showed an increase in the image quality factor when scatter has been removed.

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Section: Discussionmentioning

confidence: 99%

A novel approach to scatter-free imaging for the improvement of breast cancer Detection

et al. 2014

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“…Within the project, our group will be responsible for the design of the diagnostic imaging and therapeutic beamlines owing to the broad experience in the physics of diagnostic radiology acquired through the years, particularly for the application of synchrotron radiation to mammography [19][20][21][22] and the development of tunable quasimonochromatic x-ray beams. [23][24][25][26][27] The first goal of the LABSYNC project is to complete the characterization of the full radiation spectrum generated by the MIRRORCLE ring in combination with different targets. This includes parameters such as brilliance, beam divergence, polarization, and monochromaticity.…”

Section: Introductionmentioning

confidence: 99%

Optimization of radiography applications using x‐ray beams emitted by compact accelerators. Part I. Monte Carlo study of the hard x‐ray spectrum

et al. 2009

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The optimum target thickness for tungsten target spectra is practically constrained by a trade-off between bremsstrahlung efficiency and focal-spot size requirements. A larger margin for optimization of target thickness is probably available for mammographic spectra. The constraint of a backward-directed (or, to a lesser extent, orthogonal) output port is to be considered mandatory for minimizing the high-energy tail of the spectral distribution and keeping the radiation dose to a reasonable level. It is also fundamental to evaluate the impact of the high-energy tail of the emitted spectra in x-ray imaging applications, since the energy range involved is significantly beyond the diagnostic range. This topic will be dealt with in Part II of the article.

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“…12 The aim was to investigate the capabilities of this technique in improving the visualization of details of a three component phantom. The proposed system used a quasi-monochromatic source 13 and a solid state digital detector. 14 The source was based on Bragg diffraction of a polychromatic beam generated by a tungsten anode x-ray tube onto a pyrolytic graphite mosaic crystal.…”

Section: Introductionmentioning

confidence: 99%

<title>Dichromatic source for the application of dual-energy tissue cancellation in mammography</title>

et al. 2002

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A novel x-ray source, providing dichromatic beams for the application of dual-energy radiography, has been assembled and studied. The system works via Bragg diffraction, by monochromatizing the beam produced by a conventional W-anode x-ray tube with a mosaic crystal monochromator. The source generates a laminar beam (10 cm-high and 0.8 cm-wide), composed by two spatially superimposed quasi-monochromatic beams. The characteristics of the radiation field in terms of energy resolution and fluence have been reported, for three pairs of energies. A study of the spectra attenuated by several phantoms of breast equivalent tissue of different thicknesses shows that the optimal energy of the dichromatic beam for dual energy mammography application ranges between 18/36 keV and 18.6/37.2 keV and may be set as a function of the thickness or density of investigated tissue.

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Narrow energy band X-rays via mosaic crystal for mammography application

Cited by 36 publications

References 13 publications

A novel approach to scatter-free imaging for the improvement of breast cancer Detection

A novel approach to scatter-free imaging for the improvement of breast cancer Detection

Optimization of radiography applications using x‐ray beams emitted by compact accelerators. Part I. Monte Carlo study of the hard x‐ray spectrum

<title>Dichromatic source for the application of dual-energy tissue cancellation in mammography</title>

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