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Titolo:
Image quality evaluation of a desktop computed radiography system
Autore:
Fetterly, KA; Hangiandreou, NJ;
Indirizzi:
Mayo Clin & Mayo Fdn, Rochester, MN 55905 USA Mayo Clin & Mayo Fdn Rochester MN USA 55905 Fdn, Rochester, MN 55905 USA
Titolo Testata:
MEDICAL PHYSICS
fascicolo: 12, volume: 27, anno: 2000,
pagine: 2669 - 2679
SICI:
0094-2405(200012)27:12<2669:IQEOAD>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
PERFORMANCE; NOISE;
Keywords:
computed radiography (CR); modulation transfer function (MTF); noise power spectrum (NPS); detective quantum efficiency (DQE); image quality;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
9
Recensione:
Indirizzi per estratti:
Indirizzo: Fetterly, KA Mayo Clin & Mayo Fdn, 200 1st St SW, Rochester, MN 55905 USA Mayo Clin & Mayo Fdn 200 1st St SW Rochester MN USA 55905 USA
Citazione:
K.A. Fetterly e N.J. Hangiandreou, "Image quality evaluation of a desktop computed radiography system", MED PHYS, 27(12), 2000, pp. 2669-2679

Abstract

The modulation transfer function (MTF), noise power spectrum (NPS), and detective quantum efficiency (DQE) of the Lumisys ACR-2000 desktop computed radiography (CR) reader were measured and compared to equivalent measurements acquired from a Fuji AC-3 CR system. The one-dimensional (1D) MTF was measured from an image of a sharp edge and the 1D NPS was derived from a 2D NPS measured from a uniform field exposure. The energy dependent ideal input signal to noise ratio of the incident x-ray beams was estimated using published x-ray spectra and attenuation coefficients. Measurements were acquiredusing Agfa, Fuji, and Kodak storage phosphor plates and it was concluded that use of the Fuji plates resulted in the highest system DQE for the ACR-2000. The DQE was measured using exposures of 0.10, 1.0, and 10.0 mR from 70and 120 kVp x-ray beams filtered with aluminum. The DQE of the Lumisys ACR-2000 was lower than that of the Fuji AC-3. (C) 2000 American Association of Physicists in Medicine. [S0094-2405(00)01112-3].

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/09/20 alle ore 04:54:52