DOSE REDUCED DIGITAL MEDICAL IMAGE SIMULATIONS

A method for providing a reduced exposure value for radiographic imaging obtains a set of flat-field images at two or more exposure values and measures the noise power spectra using the flat field images. At least one noise table is generated according to interpolated noise power spectra for a set o...

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Bibliographische Detailangaben
Hauptverfasser:	ELLINWOOD JACQUELYN S, TOPFER KARIN
Format:	Patent
Sprache:	eng
Schlagworte:	DIAGNOSIS ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE SURGERY X-RAY TECHNIQUE
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Beschreibung
Zusammenfassung:	A method for providing a reduced exposure value for radiographic imaging obtains a set of flat-field images at two or more exposure values and measures the noise power spectra using the flat field images. At least one noise table is generated according to interpolated noise power spectra for a set of predetermined exposure values. Values from the at least one noise table are applied to a clinical image to form a reduced exposure simulation image. A noise mask is generated according to at least one noise table and the exposure values of the reduced exposure simulation image and added to the reduced exposure simulation image. The reduced exposure simulation image is assessed to generate a desired dose reduction factor.