The application of tunable monochromatic X-rays to mammography can improve the image quality and reduce the radiation dose to the patient. A new generation of quasi-monochromatic, high-flux X-ray sources is currently under development, based on Thomson scattering of photons produced by a laser on a highly focused electron beam. In this paper we investigate the effect of different spectral distributions on the image contrast on 2 cm, 4 cm, 6 cm, 8 cm breast mammographic phantoms containing details of different composition (tumor mass and calcification details) and thickness. In the simulations we assume a homogeneous breast composition and three compositions (25%, 50% and 75% glandular) are investigated. We simulate monochromatic, quasi-monochromatic and polychromatic X-ray sources in order to define the optimal energies that maximize the image quality parameter. In particular we compare the simulations of the Gaussian quasi-monochromatic spectra having different energy standard deviations (1, 2, 3, 4, 5keV) with traditional X-ray tubes spectra. Results show that Gaussian spectra having an energy spread of about 1 keV standard deviation can improve the image quality of about 30% with respect to traditional X-ray tube ones PACS 87.59.E- - Mammography

DI MARIA, S., Oliva, P., Bottigli, U., Carpinelli, M., Golosio, B. (2009). Image quality simulations in X-ray mammography. IL NUOVO CIMENTO B, 124(2), 205-222 [10.1393/ncb/i2009-10758-x].

Image quality simulations in X-ray mammography

CARPINELLI, Massimo;
2009

Abstract

The application of tunable monochromatic X-rays to mammography can improve the image quality and reduce the radiation dose to the patient. A new generation of quasi-monochromatic, high-flux X-ray sources is currently under development, based on Thomson scattering of photons produced by a laser on a highly focused electron beam. In this paper we investigate the effect of different spectral distributions on the image contrast on 2 cm, 4 cm, 6 cm, 8 cm breast mammographic phantoms containing details of different composition (tumor mass and calcification details) and thickness. In the simulations we assume a homogeneous breast composition and three compositions (25%, 50% and 75% glandular) are investigated. We simulate monochromatic, quasi-monochromatic and polychromatic X-ray sources in order to define the optimal energies that maximize the image quality parameter. In particular we compare the simulations of the Gaussian quasi-monochromatic spectra having different energy standard deviations (1, 2, 3, 4, 5keV) with traditional X-ray tubes spectra. Results show that Gaussian spectra having an energy spread of about 1 keV standard deviation can improve the image quality of about 30% with respect to traditional X-ray tube ones PACS 87.59.E- - Mammography
Articolo in rivista - Articolo scientifico
X-ray mammography
English
205
222
18
DI MARIA, S., Oliva, P., Bottigli, U., Carpinelli, M., Golosio, B. (2009). Image quality simulations in X-ray mammography. IL NUOVO CIMENTO B, 124(2), 205-222 [10.1393/ncb/i2009-10758-x].
DI MARIA, S; Oliva, P; Bottigli, U; Carpinelli, M; Golosio, B
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389387
Citazioni
  • Scopus 3
  • ???jsp.display-item.citation.isi??? 3
Social impact