Contrast cancellation technique applied to digital x-ray imaging using silicon strip detectors.
Med Phys
; 32(12): 3755-66, 2005 Dec.
Article
em En
| MEDLINE
| ID: mdl-16475775
ABSTRACT
Dual-energy mammographic imaging experimental tests have been performed using a compact dichromatic imaging system based on a conventional x-ray tube, a mosaic crystal, and a 384-strip silicon detector equipped with full-custom electronics with single photon counting capability. For simulating mammal tissue, a three-component phantom, made of Plexiglass, polyethylene, and water, has been used. Images have been collected with three different pairs of x-ray energies 16-32 keV, 18-36 keV, and 20-40 keV. A Monte Carlo simulation of the experiment has also been carried out using the MCNP-4C transport code. The Alvarez-Macovski algorithm has been applied both to experimental and simulated data to remove the contrast between two of the phantom materials so as to enhance the visibility of the third one.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Silício
/
Mamografia
/
Intensificação de Imagem Radiográfica
Tipo de estudo:
Health_economic_evaluation
Limite:
Female
/
Humans
Idioma:
En
Ano de publicação:
2005
Tipo de documento:
Article