A silicon microstrip system equipped with the RX64DTH ASIC for dual energy mammography

L. Ramello, C. Avila, D. Bollini, A. E Cabal Rodriguez, C. Ceballos Sanchez, W. Dabrowski, A. Diaz Garcia, M. Gambaccini, P. Giubellino, P. Grybos, J. Lopez Gaitan, A. Marzari-Chiesa, L. M. Montano, F. Prino, J. C. Sanabria, A. Sarnelli, K. Swientek, A. Taibi, A. Tuffanelli, P. Van EspenP. Wiacek

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present results obtained with a single photon counting system of 384 silicon microstrips (100 micron pitch) equipped with six RX64DTH ASICs including charge preamplifier, shaper, two discriminators and two 20-bit counters for each channel. The energy resolution of the system was determined to be of 0.72 keV (rms) with a spread of threshold setting of 0.32 keV for the whole 384-channel module (at energies of 29-33 keV), indicating its excellent potential for dual-energy imaging. Images of a mammographic test object made of PMMA, polyethylene and water were taken in scanning mode (strips parallel to incoming X-rays) under the dual energy X-ray beams. Images were subsequently processed with the dual energy subtraction technique (Alvarez and Macovski, 1976). Experimental results agree well with MCNP simulations of the mammographie phantom and demonstrate the capability of our system to obtain contrast cancellation between two kinds of materials, thereby enhancing the visibility of small features in the third material.

Original languageEnglish
Title of host publicationIEEE Nuclear Science Symposium Conference Record
EditorsJ.A. Seibert
Pages2324-2328
Number of pages5
Volume4
Publication statusPublished - 2004
Event2004 Nuclear Science Symposium, Medical Imaging Conference, Symposium on Nuclear Power Systems and the 14th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors - Rome, Italy
Duration: Oct 16 2004Oct 22 2004

Other

Other2004 Nuclear Science Symposium, Medical Imaging Conference, Symposium on Nuclear Power Systems and the 14th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors
CountryItaly
CityRome
Period10/16/0410/22/04

    Fingerprint

Keywords

  • ASIC
  • Dual energy
  • Mammography
  • Microstrip
  • Silicon detector
  • Single photon counting

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Industrial and Manufacturing Engineering

Cite this

Ramello, L., Avila, C., Bollini, D., Rodriguez, A. E. C., Sanchez, C. C., Dabrowski, W., Garcia, A. D., Gambaccini, M., Giubellino, P., Grybos, P., Gaitan, J. L., Marzari-Chiesa, A., Montano, L. M., Prino, F., Sanabria, J. C., Sarnelli, A., Swientek, K., Taibi, A., Tuffanelli, A., ... Wiacek, P. (2004). A silicon microstrip system equipped with the RX64DTH ASIC for dual energy mammography. In J. A. Seibert (Ed.), IEEE Nuclear Science Symposium Conference Record (Vol. 4, pp. 2324-2328)