PURPOSE: To explore the potential improvement in image contrast for breast imaging with use of monoenergetic photons. MATERIALS AND METHODS: The x-ray energy available from the National Synchrotron Light Source is from 5 to over 50 keV. A specific energy is selected with a tunable crystal monochromator. The object is scanned with a narrow beam of 80.0 x 0.5 mm. Mammography phantoms were imaged with plate and film as the imaging detectors. Phantom images were obtained at 16-24 keV and compared with images obtained with a conventional mammographic unit. RESULTS: Preliminary findings indicate improved image contrast of the monoenergetic images compared with that obtained from the conventional x-ray source, particularly at 18 keV and below. CONCLUSION: Pilot results are encouraging, and the authors presently continue to explore monoenergetic photon imaging with improved instrumentation, scatter rejection, and use of tissue samples.
PURPOSE: To explore the potential improvement in image contrast for breast imaging with use of monoenergetic photons. MATERIALS AND METHODS: The x-ray energy available from the National Synchrotron Light Source is from 5 to over 50 keV. A specific energy is selected with a tunable crystal monochromator. The object is scanned with a narrow beam of 80.0 x 0.5 mm. Mammography phantoms were imaged with plate and film as the imaging detectors. Phantom images were obtained at 16-24 keV and compared with images obtained with a conventional mammographic unit. RESULTS: Preliminary findings indicate improved image contrast of the monoenergetic images compared with that obtained from the conventional x-ray source, particularly at 18 keV and below. CONCLUSION: Pilot results are encouraging, and the authors presently continue to explore monoenergetic photon imaging with improved instrumentation, scatter rejection, and use of tissue samples.
Authors: Felix Diekmann; S Diekmann; K Richter; U Bick; T Fischer; R Lawaczeck; W-R Press; K Schön; H-J Weinmann; V Arkadiev; A Bjeoumikhov; N Langhoff; J Rabe; P Roth; J Tilgner; R Wedell; M Krumrey; U Linke; G Ulm; B Hamm Journal: Eur Radiol Date: 2004-06-30 Impact factor: 5.315
Authors: T Sato; N Nakamoto; T Abe; Y Fukushima; Y Tomaru; Y Sakata; M Nakazawa; A Nakamoto; H Kawasaki; Y Wada; H Ohara; R Araki; J Tanaka; T Yoda Journal: Dentomaxillofac Radiol Date: 2011-02 Impact factor: 2.419